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| | bub1 | Checkpoint serine/threonine-protein kinase bub1; Involved in cell cycle checkpoint enforcement. Acts to stabilize the spindle during mitosis. Required for the correct localization of bub3 and mad3 to the kinetochore. Appears to have a role in chromosome segregation. Catalyzes the phosphorylation of bub3. (1044 aa) |
| | cdc2 | Cyclin-dependent kinase 1; Plays a key role in the control of the eukaryotic cell cycle. It is required for entry into S-phase and mitosis. When complexed with cig2, plays a role in G1-S phase transition. When activated and complexed with the cyclin cdc13, it leads to the onset of mitosis. p34 is a component of the kinase complex that phosphorylates the repetitive C-terminus of RNA polymerase II. Involved in cell cycle arrest induced by defective RNA splicing. Required for phosphorylation of dis1 to ensure accurate chromosome segregation and for the DNA damage checkpoint. (297 aa) |
| | sfr1 | Swi5-dependent recombination DNA repair protein 1; Involved in DNA recombination repair and meiotic chromosome segregation; Belongs to the SFR1/MEI5 family. (299 aa) |
| | hta1 | Histone H2A-alpha; Core component of nucleosome which plays a central role in DNA double strand break (DSB) repair. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. (132 aa) |
| | hta2 | Histone H2A-beta; Core component of nucleosome which plays a central role in DNA double strand break (DSB) repair. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. (131 aa) |
| | cdc25 | M-phase inducer phosphatase; This protein functions as a dosage-dependent inducer in mitotic control. It is a tyrosine protein phosphatase required for progression of the cell cycle. It may directly dephosphorylate p34(cdc2) and activate the p34(cdc2) kinase activity. (596 aa) |
| | wee1 | Mitosis inhibitor protein kinase wee1; Protein kinase that acts both on serines and on tyrosines. It acts as a dosage-dependent negative regulator of entry into mitosis (G2 to M transition). Phosphorylates and inhibits cdc2. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. WEE1 subfamily. (877 aa) |
| | pat1 | Negative regulator of sexual conjugation and meiosis; This protein is a negative regulator of both sexual conjugation and meiosis. It phosphorylates mei2. It blocks the onset of meiosis until conjugation takes place. (470 aa) |
| | cdc13 | G2/mitotic-specific cyclin cdc13; Essential for the control of the cell cycle at the G2/M (mitosis) transition. Interacts with the cdc2 protein kinase to form MPF. G2/M cyclins accumulate steadily during G2 and are abruptly destroyed at mitosis. Involved in the reorganization of the cytoskeleton on transition from G2 to mitosis. Association with rum1 promotes its proteolysis during G1. (482 aa) |
| | dis2 | Serine/threonine-protein phosphatase PP1-1; Essential role in cell cycle control. PP1 is perhaps required for exit from mitosis. (327 aa) |
| | cut2 | Securin; Regulatory protein, which plays a central role in chromosome stability. Probably acts by blocking the action of key proteins. During the mitosis, it blocks separase/cut1 function, preventing the proteolysis of the cohesin complex and the subsequent segregation of the chromosomes. At the onset of anaphase, it is ubiquitinated, conducting to its destruction and to the liberation of cut1. (301 aa) |
| | rad1 | DNA damage checkpoint control protein rad1; Recombinational reparation of DNA damages induced by UV and gamma radiation. (323 aa) |
| | ppa2 | Major serine/threonine-protein phosphatase PP2A-2 catalytic subunit; Essential role in cell cycle control. PP2A may be involved in controlling the entry into mitosis, possibly acting as an inhibitor. (322 aa) |
| | puc1 | Cyclin puc1; Function in exit from the mitotic cycle. Contributes to negative regulation of the timing of sexual development in fission yeast, and functions at the transition between cycling and non-cycling cells. Interacts with protein kinase A. (359 aa) |
| | rad9 | DNA repair protein rad9; Acts in DNA repair and mutagenesis. Involved in promoting resistance to ionizing radiation and UV light, as well as regulating cell cycle progression after irradiation. Repressor of entry into mitosis that is activated by chromosome breaks. (426 aa) |
| | ubc11 | Ubiquitin-conjugating enzyme E2-20 kDa; Catalyzes the covalent attachment of ubiquitin to other proteins. (176 aa) |
| | srw1 | WD repeat-containing protein srw1; Has a role in cell differentiation and cell cycling by negatively regulating cig2 and cdc12-associated cdc2. Down-regulates the level of cdc13, particularly in a nitrogen deprived environment. Regulator of cell cycle G1 phase progression. Prevents onset of mitosis during the pre-Start G1 period. Required for degradation of cdc13 mitotic cyclin B during G1 arrest but not during mitotic exit. (556 aa) |
| | far11 | Factor arrest protein 11; Participates in the control of the reentry into the cell cycle following pheromone treatment; Belongs to the FAR11 family. (817 aa) |
| | sgo2 | Shugoshin-2; Involved in chromosome cohesion during mitosis and meiosis by preventing premature dissociation of cohesin complex from centromeres after prophase, when most of cohesin complex dissociates from chromosomes arms. Required for faithful mitotic chromosome segregation and proper kinetochore orientation during meiosis I. In contrast to sgo1, it is dispensable for centromeric protection of rec8 during meiosis I as well as protection of rad21 during mitosis. Required to sense the lack of tension at centromeres during mitosis. (647 aa) |
| | fin1 | G2-specific protein kinase fin1; Promotes chromosome condensation and nuclear envelope dynamics during mitosis. Activity appears at metaphase-anaphase transition; Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. NIMA subfamily. (722 aa) |
| | csc4 | Uncharacterized protein C2C4.10c. (166 aa) |
| | mdb1 | DNA damage response protein Mdb1; Involved in DNA damage response (DDR) mediated through its interaction with phosphorylated H2A proteins hta1 and hta2 which mark the discrete foci of DNA damage. (624 aa) |
| | pop2 | WD repeat-containing protein pop2; Involved in maintenance of ploidy through proteasome dependent degradation of CDK inhibitor rum1 and S-phase initiator cdc18. Functions as a recognition factor for rum1 and cdc18, which are subsequently ubiquitinated and targeted to the 26S proteasome for degradation. Together with pop1, required for cig2 instability during G2 and M phase and cig2 degradation in exponentially growing cells. (703 aa) |
| | SPAC6B12.13 | Type 1 phosphatases regulator ypi1; Regulator of type 1 phosphatases which maintains protein phosphatase activity under strict control; Belongs to the YPI1 family. (104 aa) |
| | rdp1 | RNA-dependent RNA polymerase 1; Has a role in the RNA interference (RNAi) pathway which is important for heterochromatin formation, accurate chromosome segregation, centromere cohesion and telomere function during mitosis and meiosis. Required for both post-transcriptional and transcriptional gene silencing. Required for silencing at the centromeres and for initiation of transcriptionally silent heterochromatin at the mating type locus. Promotes histone H3 'Lys-10' methylation necessary for centromere function. Required for recruitment of swi6 and cohesin to an ectopic dg repeat. A mem [...] (1215 aa) |
| | clg1 | Meiotically up-regulated gene 80 protein; Has a role in meiosis. (461 aa) |
| | klp5 | Kinesin-like protein 5; Has a role in establishing metaphase during mitosis. Required for chromosome segregation where it generates tension during kinetochore capturing; Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. Kinesin II subfamily. (883 aa) |
| | swi3 | Swi1-interacting protein swi3; Forms a fork protection complex (FPC) with swi1. FPC coordinates leading and lagging strand synthesis and moves with the replication fork. It is required for programmed fork-pausing which is necessary for mating-type switching. FPC stabilizes replication forks in a configuration that is recognized by replication checkpoint sensors. It is involved in termination at the mat1-proximal polar- terminator of replication (RTS1) and also required for activation of the Rad53-like checkpoint kinase cds1; Belongs to the CSM3 family. (181 aa) |
| | tor1 | Serine/threonine-protein kinase tor1; Phosphatidylinositol 3-kinase homolog, component of TORC2, which regulates multiple cellular processes to control cell growth in response to environmental signals. TORC2 is required for cell survival under various stress conditions. TORC2 positively controls G1 cell- cycle arrest, sexual development and amino acid uptake. Positively regulates amino acid uptake through the control of expression of amino acid permeases. Responsible for the phosphorylation of AGC kinase gad8 at 'Ser-527' and 'Ser-546', activating gad8 kinase activity and promoting sex [...] (2335 aa) |
| | mad2 | Mitotic spindle checkpoint component mad2; Feedback control that prevents cells with incompletely assembled spindles from leaving mitosis. It interacts with the anaphase promoting complex/cyclosome (APC/C) thereby inhibiting APC/C-dependent proteolysis, a step required for exit from mitosis. Belongs to the MAD2 family. (203 aa) |
| | cmk2 | Calcium/calmodulin-dependent protein kinase type II; Has a role in the regulation of G2/M transition during mitosis; Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily. (504 aa) |
| | bub3 | Mitotic checkpoint protein bub3; Involved in cell cycle checkpoint enforcement. Involved in recruitment of checkpoint proteins bub1 and mad3 to the kinetochores, ensuring correct spindle checkpoint function. Belongs to the WD repeat BUB3 family. (320 aa) |
| | psl1 | PHO85 cyclin-like protein psl1; Cyclin partner of the cyclin-dependent kinase (CDK) pef1 (PHO85 homolog). (243 aa) |
| | nbs1 | DNA repair and telomere maintenance protein nbs1; Required for DNA damage repair and S-phase DNA damage checkpoint. Involved in telomere length maintenance and maintenance of chromatin structure. (613 aa) |
| | klp6 | Kinesin-like protein 6; Has a role in establishing metaphase during mitosis. Required for chromosome segregation where it generates tension during kinetochore capturing; Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. Kinesin II subfamily. (784 aa) |
| | cut12 | Spindle pole body-associated protein cut12; Required for bipolar spindle formation. May act as a regulator of the p34cdc2/cyclin B kinase. Required for full activation of the plo1 kinase. However, in cut12.1 cells at restrictive temperature the H1 kinase does rise concomitant with entry into mitosis, indicating that cut12 is not required for activation of p34cdc2/cyclin B. The cut12.s11 allele may promote cdc2-independent phosphorylation of SPB proteins thereby overcoming the requirement for cdc25 in cell cycle progression. (548 aa) |
| | spc7 | Kinetochore protein spc7; Acts as a component of the NMS (Ndc80-MIND-Spc7) super complex which has a role in kinetochore function during late meiotic prophase and throughout the mitotic cell cycle. (1364 aa) |
| | hpz1 | PARP-type zinc finger-containing protein C2A9.07c. (246 aa) |
| | tor2 | Serine/threonine-protein kinase tor2; Phosphatidylinositol 3-kinase homolog, component of TORC1, which regulates multiple cellular processes to control cell growth in response to environmental signals. TORC1 controls the switch between cell proliferation and differentiation by sensing nutrient availability. Nutrient limitation and environmental stress signals cause inactivation of TORC1. Active TORC1 positively controls cell growth and ribosome biogenesis by regulating ribosomal protein gene expression. In nutrient rich conditions, responsible for the phosphorylation of AGC S6 kinase ( [...] (2337 aa) |
| | psy2 | Uncharacterized protein C216.01c. (836 aa) |
| | skp1 | Suppressor of kinetochore protein 1; Required for cig2 degradation in the G2 and M phases of the cell cycle. Together with pof6, essential for septum processing and cell separation. Involved in mitotic progression, essential for the execution of anaphase B; required for coordinated structural alterations of mitotic spindles and segregation of nuclear membrane structures at anaphase. Involved in the DNA damage checkpoint pathway and maintenance of genome integrity. Component of the RAVE complex which is required for stable assembly of the vacuolar ATPase complex V- ATPase. Belongs to th [...] (161 aa) |
| | swi1 | Mating-type switching protein swi1; Forms a fork protection complex (FPC) with swi3. FPC coordinates leading and lagging strand synthesis and moves with the replication fork. It is required for programmed fork-pausing which is necessary for mating-type switching. FPC stabilizes replication forks in a configuration that is recognized by replication checkpoint sensors. It is involved in termination at the mat1-proximal polar- terminator of replication (RTS1) and also required for activation of the Rad53-like checkpoint kinase cds1. (971 aa) |
| | tsc2 | Tuberous sclerosis 2 protein homolog; Together with tsc1, required for uptake of various amino acids from the environment and for proper conjugation. Involved in induction of gene expression of permeases and genes required for meiosis upon nitrogen starvation. May act as a GTPase-activating protein (GAP) for the small GTPase rhb1. (1339 aa) |
| | rad50 | DNA repair protein rad50; Involved in DNA double-strand break (DSB) repair. Involved in mating type switching and has a role in choosing the sister chromatid for recombinational repair. Also has a role in telomere length maintenance. (1285 aa) |
| | paa1 | Protein phosphatase PP2A regulatory subunit A; Phosphatase 2A affects a variety of biological processes in the cell such as transcription, cell cycle progression and cellular morphogenesis, and provides an initial identification of critical substrates for this phosphatase. The regulatory subunit may direct the catalytic subunit to distinct, albeit overlapping, subsets of substrates (By similarity). (590 aa) |
| | mik1 | Mitosis inhibitor protein kinase mik1; Protein kinase that acts both on serines and on tyrosines. It acts as a negative regulator of entry into mitosis (G2 to M transition). Phosphorylates and inhibits cdc2. (581 aa) |
| | rad4 | S-M checkpoint control protein rad4; Essential component for DNA replication and also the checkpoint control system which couples S and M phases. May directly or indirectly interact with chromatin proteins to form the complex required for the initiation and/or progression of DNA synthesis. Interacts simultaneously with both 'Thr-187' phosphorylation sites in a crb2 dimer for establishing the DNA checkpoint. (648 aa) |
| | chk1 | Serine/threonine-protein kinase chk1; Serine/threonine-protein kinase which is required for checkpoint-mediated cell cycle arrest and activation of DNA repair in response to the presence of DNA damage or unreplicated DNA. May also negatively regulate cell cycle progression during unperturbed cell cycles. Binds to and phosphorylates CDC25. This leads to negative regulation of CDC25 and prevents mitotic entry. (496 aa) |
| | rad52 | DNA repair and recombination protein rad22; Active in the repair of DNA damage and in mating-type switching. Probably involved in the repair of DNA double-strands breaks. Has a role in promoting S phase completion; Belongs to the RAD52 family. (469 aa) |
| | cdc16 | Cell division control protein 16; Has a dual role in the cell cycle. In mitosis, it is involved in maintenance of cdc2 kinase activity. It is subsequently required for regulation of septum formation. Could be involved in maintenance of cdc2 kinase activity by preventing, directly or indirectly, the degradation of cyclin or the dephosphorylation of 'Thr-167' of cdc2. (299 aa) |
| | cig2 | G2/mitotic-specific cyclin cig2; Essential for the control of the cell cycle at the G2/M and G1/S (mitosis) transition. Interacts with the cdc2 protein kinase to form MPF. Interaction with res2 promotes the phosphorylation of res1 and inhibits MBF-dependent gene transcription. Forms an autoregulating feedback-inhibition loop with MBF which is important for normal regulation of the cell cycle. G2/M cyclins accumulate steadily during G2 and are abruptly destroyed at mitosis. Negatively regulates conjugation via interacting with cell cycle 'start' genes. Degraded by skp1, pop1 and pop2 in [...] (411 aa) |
| | rad26 | DNA repair protein rad26; Involved in cell cycle arrest when DNA synthesis is inhibited by hydroxyurea, and in mitosis arrest after treatment with DNA-damaging agents. This protein is S phase-specific. (614 aa) |
| | rum1 | Cyclin-dependent kinase inhibitor rum1; Regulator of cell cycle G1 phase progression. Ensures the correct sequence of S phase and mitosis in the cell by acting as an inhibitor of the cdc2 mitotic kinase. Probably interacts with cdc2 to inhibit its action until the cell mass for Start is reached. Determines the length of the pre-Start G1 period and prevents mitosis from happening in early G1 cells. Required for maintaining pheromone-induced G1 arrest. Acts as an adapter protein since interaction with cdc13 promotes cyclin proteolysis during G1. Becomes a target for degradation at the G1 [...] (230 aa) |
| | cdt1 | Cell division cycle protein cdt1; DNA replication licensing factor, required for pre- replication complex assembly. Faithful duplication of the genetic material requires 'once per cell cycle' DNA replication initiation and elongation. Central to this control is the tightly regulated formation of prereplicative complexes (preRCs) at future origins of DNA replication. Required for the recruitment of the MCM helicase complex to the replication origins; Belongs to the Cdt1 family. (444 aa) |
| | mes1 | Protein mes1; Specifically required for meiosis II (MII). Binds to slp1, an activator of the anapahase promoting complex/cyclcosome (APC/C), and counteracts its function in promoting proteolysis of cdc13. By suppressing the degradation of cdc13 at anaphase I this protein may help maintain a sufficient level of cdc2 kinase activity to complete MII. (101 aa) |
| | cdc18 | Cell division control protein 18; Part of the checkpoint control that prevents mitosis from occurring until S phase is completed. Plays a key role in coupling S phase to start and mitosis. Acts at the initiation of DNA replication and plays a major role in controlling the onset of S-phase. Together with orp1, involved in the maintenance of replication forks and activation of cds1-dependent S-phase checkpoint. Belongs to the CDC6/cdc18 family. (577 aa) |
| | rad24 | DNA damage checkpoint protein rad24; Required for the DNA damage checkpoint that ensures that DNA damage is repaired before mitosis is attempted. Acts as a negative regulator of meiosis by antagonizing the function of mei2. It inhibits the association of meiRNA (a non-coding RNA molecule required for the nuclear mei2 dot formation) to the phosphorylated but not to the unphosphorylated form of mei2 in vitro. (270 aa) |
| | rad25 | DNA damage checkpoint protein rad25; Required for the DNA damage checkpoint that ensures that DNA damage is repaired before mitosis is attempted. (270 aa) |
| | shk1 | Serine/threonine-protein kinase shk1/pak1; MAP4K component of the MAPK pathway required for the mating pheromone response. Phosphorylates histone H2B to form H2BS10ph (By similarity). Phosphorylates tea1. Required for skb1-dependent mitotic inhibitory function. Regulates microtubule dynamics and cell polarity. Belongs to the protein kinase superfamily. STE Ser/Thr protein kinase family. STE20 subfamily. (658 aa) |
| | rad17 | Checkpoint protein rad17; Participates in checkpoint pathways arrest of the cell cycle. A mechanism that allows the DNA repair pathways to act to restore the integrity of the DNA prior to DNA synthesis or separation of the replicated chromosomes. (606 aa) |
| | hsk1 | Cell cycle serine/threonine-protein kinase hsk1; Required for G1/S transition. Plays a role in DNA replication checkpoint signaling through regulating rad3 and cds1. Involved in the maintenance of mitotic chromosome structures during S phase through regulating the function of rad21. Required for initiation of mitotic DNA replication through phosphorylating mcm2/cdc19. Required for genome integrity; Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. CDC7 subfamily. (507 aa) |
| | atf1 | Transcription factor atf1; Transcription factor required for sexual development and entry into stationary phase. Binds and activates meiotic recombination hot spot ade6-M26. (566 aa) |
| | orc1 | Origin recognition complex subunit 1; Component of the origin recognition complex (ORC) that binds origins of replication. It has a role in both chromosomal replication and mating type transcriptional silencing. ORC binds to multiple sites within the ars1 origin of DNA replication in an ATP-independent manner; Belongs to the ORC1 family. (707 aa) |
| | par2 | Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta 2 isoform; The B regulatory subunit might modulate substrate selectivity and catalytic activity, and also might direct the localization of the catalytic enzyme to a particular subcellular compartment. Has a role in cell shape control and septum formation. (627 aa) |
| | hus1 | Checkpoint protein hus1; Essential in controlling the S-M checkpoint that couples mitosis to the completion of DNA replication. It is also required for the response to DNA damage. (287 aa) |
| | slp1 | WD repeat-containing protein slp1; Required for mad2-dependent spindle checkpoint activation. Promotes ubiquitin-dependent degradation of cdc13 by the anaphase promoting complex/cyclosome (APC/C). (488 aa) |
| | pas1 | G1/S-specific cyclin pas1; Essential for the control of the cell cycle at the G1/S (start) transition. Interacts with the pef1 protein kinase. The pef1/pas1 complex activates the res2/cdc10 complex. (411 aa) |
| | cdr2 | Mitosis inducer protein kinase cdr2; Acts as a mitotic inducer. In G2 it negatively regulates wee1, a mitotic inhibitor. Also has a role in cytokinesis where it required for proper septum formation; Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. NIM1 subfamily. (775 aa) |
| | crb2 | DNA repair protein crb2; Essential for cell cycle arrest at the G1 and G2 stages following DNA damage by X-, and UV-irradiation, or inactivation of DNA ligase. Plays a role in the response to DNA damage. Interaction with rad4 via its phosphorylation sites in the N-terminus couples the DNA checkpoint apparatus to chromatin via interaction of its C-terminal BRCT domains with epigenetic modifications on histones H4 and H2A, respectively, in the G1/S phase of the cell cycle, and facilitates recruitment of the checkpoint kinase chk1. (778 aa) |
| | nif1 | Mitosis inhibitor nif1; Functions as a negative regulator of mitosis. It interacts with the C-terminal of nim1, thereby inhibiting its kinase activity which phosphorylates wee1. (681 aa) |
| | mad1 | Spindle assembly checkpoint component mad1; Central component of the spindle assembly checkpoint. Has a role in the correct positioning of the septum. Required for anchoring mad2 to the nuclear periphery. (689 aa) |
| | mus81 | Crossover junction endonuclease mus81; Interacts with eme1 to form a DNA structure-specific endonuclease with substrate preference for branched DNA structures with a 5'-end at the branch nick. Typical substrates include 3'-flap structures, D-loops, replication forks and nicked Holliday junctions. May be required in mitosis for the processing of stalled or collapsed replication fork intermediates. May be required in meiosis for the repair of meiosis-specific double strand breaks subsequent to single- end invasion (SEI). Belongs to the XPF family. (608 aa) |
| | mcs4 | Response regulator mcs4; Response regulator that coordinately controls the stress activated wak1-wis1-sty1 MAP kinase pathway and fission yeast cell cycle. (522 aa) |
| | rad3 | Protein kinase rad3; Serine/threonine kinase which activates checkpoint signaling upon genotoxic stresses. Involved in G2 arrest following DNA damage where it phosphorylates chk1. Phosphorylation of 'Thr-73' and 'Ser-80' of checkpoint mediator crb2 promotes its interaction with chk1. It is also involved in the dependence of mitosis on the completion of DNA replication ; Belongs to the PI3/PI4-kinase family. ATM subfamily. (2386 aa) |
| | cds1 | Serine/threonine-protein kinase cds1; Has a role in the DNA replication-monitoring S/G2 checkpoint system. It is responsible for blocking mitosis in the S phase. It monitors DNA synthesis by interacting with DNA polymerase alpha and sends a signal to block the onset of mitosis while DNA synthesis is in progress. Phosphorylates rad60 and dna2. Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CHEK2 subfamily. (460 aa) |
| | mre11 | DNA repair protein rad32; Required for the repair of double strand breaks (DSB) caused by gamma and UV radiation. May work in conjunction with rhp51; Belongs to the MRE11/RAD32 family. (649 aa) |
| | pom1 | DYRK-family kinase pom1; Polarity factor involved in localization of polarized growth and cytokinesis. Forms an intracellular gradient that serves to measure cell length and control mitotic entry. Controls the timing of mitotic commitment by regulating the inhibitory impact of cdr1/cdr2 on wee1 activity. Directly phosphorylates the tail of cdr2 which inhibits cdr2 activation by ssp1. Cdr2 phosphorylation by pom1 also modulates cdr2 association with membranes and inhibits cdr2 interaction with mid1, reducing its clustering ability, possibly via the down-regulation of cdr2 kinase activit [...] (1087 aa) |
| | tsc1 | Tuberous sclerosis 1 protein homolog; Together with tsc2, required for uptake of various amino acids from the environment and for proper conjugation. Involved in induction of gene expression of permeases and genes required for meiosis upon nitrogen starvation. May act as a GTPase-activating protein (GAP) for the small GTPase rhb1. (899 aa) |
| | rqh1 | ATP-dependent DNA helicase hus2/rqh1; Has a role in the repair of UV-induced DNA damage in G2 via recombination-mediated repair. Also has a role in the repair of infrared-induced double DNA strand breaks. Exhibits an ATP-dependent DNA-helicase activity that unwinds single- and double-stranded DNA in a 3'-5' direction; Belongs to the helicase family. RecQ subfamily. (1328 aa) |
| | rfc2 | Replication factor C subunit 2; The elongation of primed DNA templates by DNA polymerase delta and epsilon requires the action of the accessory proteins PCNA and activator 1. Subunit 2 binds ATP and single-stranded DNA. (340 aa) |
| | dcr1 | ATP-dependent helicase dcr1; Required for G1 arrest and mating in response to nitrogen starvation. Ago1 regulation of cytokinesis and cell cycle checkpoints occurs downstream of dcr1. Required, indirectly, for regulated hyperphosphorylation of cdc2. (1374 aa) |
| | sty1 | Mitogen-activated protein kinase sty1; Mitogen-activated protein kinase involved in a signal transduction pathway that is activated by changes in the osmolarity of the extracellular environment. Controls osmotic regulation of transcription of target genes. Involved in osmoregulation and stress response pathways leading to an efficient start of sexual differentiation. Supports translation initiation and facilitates adaptation to environmental stress in part through reducing eIF2-alpha phosphorylation. Links the cell-cycle G2/M control with changes in the extracellular environment that a [...] (349 aa) |
| | sid2 | Serine/threonine-protein kinase sid2; Part of a signaling pathway. Required for initiation of medial ring constriction and septation; Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. (607 aa) |
| | gcn1 | eIF-2-alpha kinase activator gcn1; Acts as a positive activator of the gcn2 protein kinase activity in response to amino acid starvation. Component of the gcn1- gcn20 complex that forms a complex with gcn2 on translating ribosomes; during this process, gcn1 seems to act as a chaperone to facilitate delivery of uncharged tRNAs that enter the A site of ribosomes to the tRNA-binding domain of gcn2, and hence stimulating gcn2 kinase activity. Participates in the repression of global protein synthesis and in gene-specific mRNA translation activation, such as the transcriptional activator gc [...] (2670 aa) |
| | lkh1 | Dual specificity protein kinase lkh1; Protein kinase that may act as a negative regulator of filamentous growth and flocculation. Appears to have a role in normal cell wall and septum formation and in cell separation. May have antagonistic function in the regulation of beta-glucan distribution between the sites for cell wall and septum assembly. Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. Lammer subfamily. (690 aa) |
| | nuf2 | Kinetochore protein nuf2; Acts as a component of the NMS (Ndc80-MIND-Spc7) super complex which has a role in kinetochore function during late meiotic prophase and throughout the mitotic cell cycle. Acts as a component of the essential kinetochore-associated NDC80 complex, which is required for chromosome segregation and spindle checkpoint activity. Belongs to the NUF2 family. (441 aa) |
| | ndc80 | Kinetochore protein ndc80; Acts as a component of the NMS (Ndc80-MIND-Spc7) super complex which has a role in kinetochore function during late meiotic prophase and throughout the mitotic cell cycle. Acts as a component of the essential kinetochore-associated NDC80 complex, which is required for chromosome segregation and spindle checkpoint activity. Belongs to the NDC80/HEC1 family. (624 aa) |
| | mek1 | Meiosis-specific serine/threonine-protein kinase mek1; Probable protein kinase required for meiotic recombination. (445 aa) |
| | ppa3 | Putative serine/threonine-protein phosphatase C22H10.04. (307 aa) |
| | dma1 | Probable E3 ubiquitin-protein ligase dma1; Probable E3 ubiquitin-protein ligase which is a component of the spindle assembly checkpoint, required to prevent septum formation and premature exit from mitosis if spindle function is compromised. Inhibits the septation initiation netwok (SIN) during spindle checkpoint activation. The effect appears to be mediated through preventing the SIN activator, plo1 kinase, from localizing to the SPB. Belongs to the DMA1 family. (267 aa) |
| | sck2 | Serine/threonine-protein kinase sck2; Protein kinase that is part of growth control pathway which is at least partially redundant with the cAMP pathway. (646 aa) |
| | par1 | Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta 1 isoform; The B regulatory subunit might modulate substrate selectivity and catalytic activity, and also might direct the localization of the catalytic enzyme to a particular subcellular compartment. Has a role in cell shape control and septum formation. (548 aa) |
| | spc25 | Kinetochore protein spc25; Acts as a component of the NMS (Ndc80-MIND-Spc7) super complex which has a role in kinetochore function during late meiotic prophase and throughout the mitotic cell cycle. Acts as a component of the essential kinetochore-associated NDC80 complex, which is required for chromosome segregation and spindle checkpoint activity. (238 aa) |
| | byr4 | Protein byr4; Has an essential role in ensuring cytokinesis and septation occur only once during mitosis. It does so by interacting with the ras1 signaling pathways, thereby suppressing them; To yeast BFA1. (665 aa) |
| | pab1 | Protein phosphatase PP2A regulatory subunit B; Phosphatase 2A affects a variety of biological processes in the cell such as transcription, cell cycle progression and cellular morphogenesis, and provides an initial identification of critical substrates for this phosphatase. The regulatory subunit may direct the catalytic subunit to distinct, albeit overlapping, subsets of substrates. (463 aa) |
| | ssb1 | Replication factor A protein 1; As part of the replication protein A (RPA/RP-A), a single- stranded DNA-binding heterotrimeric complex, may play an essential role in DNA replication, recombination and repair. Binds and stabilizes single-stranded DNA intermediates, preventing complementary DNA reannealing and recruiting different proteins involved in DNA metabolism; Belongs to the replication factor A protein 1 family. (609 aa) |
| | pmk1 | Mitogen-activated protein kinase spm1; Regulates cell integrity and functions coordinately with the protein kinase C pathway (pck1 and pck2). Involved the regulation of wall architecture, cell shape, cytokinesis in exponential and stationary phase, and metabolism of ions. (422 aa) |
| | rif1 | Telomere length regulator protein rif1; Negatively regulates telomere length. Appears to play no role in transcriptional silencing of telomeric loci. (1400 aa) |
| | eme1 | Crossover junction endonuclease eme1; Interacts with mus81 to form a DNA structure-specific endonuclease with substrate preference for branched DNA structures with a 5'-end at the branch nick. Typical substrates include 3'-flap structures, D-loops, replication forks and nicked Holliday junctions. May be required in mitosis for the processing of stalled or collapsed replication fork intermediates. May be required in meiosis for the repair of meiosis-specific double strand breaks subsequent to single- end invasion (SEI). Belongs to the EME1/MMS4 family. (735 aa) |
| | ase1 | Anaphase spindle elongation protein 1; Required for anaphase spindle elongation and microtubule bundling in both interphase and mitosis. Has a role in spatial and temporal regulation of septation and cytokinesis and ensures equal partition of segregating sister chromatids. Ensures correct midzone positioning of protein kinase ark1. Acts as a regulatory component at cytokinesis checkpoint where it inhibits nuclear division when actomyosin ring formation is impaired. (731 aa) |
| | pds5 | Sister chromatid cohesion protein pds5; Required for the establishment and maintenance of sister chromatid cohesion during S phase. Prevents their formation until eso1 is present. May also have a role during meiosis. (1205 aa) |
| | gcn2 | eIF-2-alpha kinase GCN2; Metabolic-stress sensing protein kinase that phosphorylates the alpha subunit of eukaryotic translation initiation factor 2 (eIF-2- alpha/tif211) on 'Ser-52' in response to low amino acid availability. Plays a role as an activator of the general amino acid control (GAAC) pathway required for adapatation to amino acid starvation. Converts phosphorylated eIF-2-alpha/tif211 either to a competitive inhibitor of translation initiation factor eIF-2B, leading to a global protein synthesis repression, and thus to a reduced overall utilization of amino acids, or to a tr [...] (1576 aa) |
| | tel2 | DNA replication checkpoint protein tel2; Component of the TORC1 and TORC2 complexes required for the regulation of the cellular respons to changes in available nutrients. Required for normal entry into S phase. Regulates activation of the DNA replication checkpoint. Required for efficient phosphorylation of mrc1, which is essential for the activation of cds1 kinase. Plays also an important role in genome stability; Belongs to the TEL2 family. (868 aa) |
| | clp1 | Tyrosine-protein phosphatase CDC14 homolog; Protein phosphatase which antagonizes mitotic cyclin- dependent kinase cdc2, the inactivation of which is essential for exit from mitosis. To access its substrates, is released from nucleolar sequestration during mitosis. Plays an essential in coordinating the nuclear division cycle with cytokinesis through the cytokinesis checkpoint. Involved in chromosome segregation, where it is required for meiosis I spindle dissambly as well as for establishing two consecutive chromosome segregation phases. Allows damaged actomyosin rings to be maintaine [...] (537 aa) |
| | cmk1 | Calcium/calmodulin-dependent protein kinase type I; Important in cell cycle regulation; Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily. (335 aa) |
| | mrc1 | Mediator of replication checkpoint protein 1; Component of the replisome and is required for rad3-dependent activation of the checkpoint kinase cds1 in response to replication fork arrest. Phosphorylation allows it to mediate the activation of cds1. (1019 aa) |
| | set9 | Histone-lysine N-methyltransferase set9; Histone methyltransferase that specifically trimethylates 'Lys-20' of histone H4 to form H4K20me3. H4 'Lys-20' methylation is apparently not involved in the regulation of gene expression or heterochromatin function but participates in DNA damage response by giving a 'histone mark' required for the recruitment of the checkpoint protein Crb2 to sites of DNA damage. (441 aa) |
| | spc24 | Kinetochore protein spc24; Acts as a component of the NMS (Ndc80-MIND-Spc7) super complex which has a role in kinetochore function during late meiotic prophase and throughout the mitotic cell cycle. Acts as a component of the essential kinetochore-associated NDC80 complex, which is required for chromosome segregation and spindle checkpoint activity. Belongs to the SPC24 family. (198 aa) |
| | mad3 | Mitotic spindle checkpoint component mad3; Has a role in transducing the anaphase inhibitory signal to the anaphase promoting complex (APC). Forms part of the mad2 feedback control. (310 aa) |
| | ark1 | Serine/threonine-protein kinase ark1; Required for the spindle checkpoint attachment response during spindle formation, kinetochore microtubule interactions and chromosome segregation during anaphase. Ark1 activity depends upon cut17 function and phosphorylation. Ark1 with bir1 is required for full-scale association with kinetochores and formation of a complex with mad3. Ark1 is also required for phosphorylation of histone H3 that accompanies chromosome condensation and condensin recruitment to mitotic chromatin. Ark1 with pic1 is required for the execution of cytokinesis. (355 aa) |
| | dfp1 | Hsk1-interacting molecule 1; Activates hsk1 kinase and is essential for G1/S transition. Has a role in S-phase checkpoint control induced by replication fork blocks after nucleotide deprivation and DNA damage. (545 aa) |
| | fkh2 | Fork head protein homolog 2; Required for promoter sequence element PCB-driven, M-phase- specific transcription. Acts as a transcriptional activator with a role in the regulation of mitosis. Binds, cooperatively with mcm1, the CLB cluster regulatory elements throughout the cell cycle. Regulates the periodic transcription of cdc15 and spo12. Required for the correct timing, positioning and contraction of the division septum. (642 aa) |
| | sid4 | Septation initiation protein sid4; Required for activation of the spg1 GTPase signaling cascade which leads to the initiation of septation and the subsequent termination of mitosis. May act as a scaffold at the spindle pole body to which other components of the spg1 signaling cascade attach. (660 aa) |
| | cdc45 | Cell division control protein 45 homolog; Required for initiation of chromosomal DNA replication. May have a role in regulating the MCM proteins nda1 and nda4. Belongs to the CDC45 family. (638 aa) |
| | dnt1 | Nucleolar protein dnt1; Negatively regulates the septation initiation network (SIN) pathway, independently of the cdc14 phosphatase clp1. May also have a role in silencing rDNA transcription. Required for maintaining the exclusive nucleolus localization of nuc1. (599 aa) |
| | far10 | Uncharacterized protein C3H7.13. (301 aa) |
| | pef1 | Serine/threonine-protein kinase pef1. (288 aa) |
| | gtr2 | GTP-binding protein gtr2; GTPase. Component of the GSE complex, a GTPase complex required for intracellular sorting of GAP1 out of the endosome (By similarity). (314 aa) |
| | tel1 | Serine/threonine-protein kinase tel1; Serine/threonine protein kinase which activates checkpoint signaling upon genotoxic stresses such as ionizing radiation (IR), ultraviolet light (UV), or DNA replication stalling, thereby acting as a DNA damage sensor. Recognizes the substrate consensus sequence [ST]- Q. Phosphorylates histone H2A to form H2AS128ph (gamma-H2A) at sites of DNA damage, involved in the regulation of DNA damage response mechanism. Undirectly involved in the phosphorylation of rad32 which is necessary for its telomere function. Required for the control of telomere length [...] (2812 aa) |
| | pph3 | Putative serine/threonine-protein phosphatase C26H8.05c; Belongs to the PPP phosphatase family. PP-1 subfamily. (348 aa) |
| | gtr1 | GTP-binding protein gtr1; GTPase. Component of the GSE complex, a GTPase complex required for intracellular sorting of GAP1 out of the endosome (By similarity). (308 aa) |
| | ago1 | Protein argonaute; Required for G1 arrest and mating in response to nitrogen starvation. Ago1 regulation of cytokinesis and cell cycle checkpoints occurs downstream of dcr1. Required, indirectly, for regulated hyperphosphorylation of cdc2. Has a role in the RNA interference (RNAi) pathway which is important for heterochromatin formation, accurate chromosome segregation, centromere cohesion and telomere function during mitosis and meiosis. Required for silencing at the centromeres and for initiation of transcriptionally silent heterochromatin at the mating type locus. Promotes histone H [...] (834 aa) |
| | ctp1 | DNA endonuclease ctp1; Endonuclease that cooperates with the MRN complex in processing meiotic and mitotic double-strand breaks by allowing the endonucleolytic removal of rec12 from the break sites and ensuring both resection and intrachromosomal association of the broken ends. Required for the formation of RPA-coated single strand DNA adjacent to the DSBs where it functions together with the MRN complex in 5'- 3' resection. Required for the repair of programmed meiotic DSBs. Involved also in an rhp51 recombinase-dependent recombinational repair pathway. Belongs to the COM1/SAE2/CtIP family. (294 aa) |
| | pof3 | F-box/TPR repeat protein pof3; Has a role in substrate recognition in the Skp1-Cullin- 1/Cdc53-F-box (SCF) ubiquitin ligase complex. Required for the maintenance of telomere length and transcriptional silencing at the telomere. Also required for chromosome segregation. (577 aa) |
| | mph1 | Serine/threonine-protein kinase mph1; Involved in the regulation of the onset of mitosis. Involved in a pathway that coordinates cell proliferation and differentiation. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. (678 aa) |
| | mpr1 | Multistep phosphorelay regulator 1; Binds to the msc4 response regulator which is part of a multistep phosphorelay system that transmits oxidative stress signals to the spc1 MAPK cascade. (295 aa) |
| | wpl1 | Wings apart-like protein homolog 1; Regulator of sister chromatid cohesion in mitosis which negatively regulates cohesin association with chromatin. Belongs to the WAPL family. (602 aa) |
| | srk1 | Serine/threonine-protein kinase srk1; Has a role in the regulation of meiosis via the sty1 stress- activated MAPK pathway. Inhibits nitrogen-limitation induced arrest at G1; Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily. (580 aa) |
| | far8 | Uncharacterized WD repeat-containing protein C1773.01. (612 aa) |
