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| | Rtca | RNA 3'-terminal phosphate cyclase; Catalyzes the conversion of 3'-phosphate to a 2',3'-cyclic phosphodiester at the end of RNA. The mechanism of action of the enzyme occurs in 3 steps: (A) adenylation of the enzyme by ATP; (B) transfer of adenylate to an RNA-N3'P to produce RNA-N3'PP5'A; (C) and attack of the adjacent 2'-hydroxyl on the 3'-phosphorus in the diester linkage to produce the cyclic end product. The biological role of this enzyme is unknown but it is likely to function in some aspects of cellular RNA processing (By similarity); Belongs to the RNA 3'-terminal cyclase family. [...] (366 aa) |
| | Rrp15 | RRP15-like protein. (281 aa) |
| | Nom1 | Nucleolar MIF4G domain-containing protein 1; Plays a role in targeting PPP1CA to the nucleolus. (854 aa) |
| | Ddx18 | ATP-dependent RNA helicase DDX18; Probable RNA-dependent helicase; Belongs to the DEAD box helicase family. DDX18/HAS1 subfamily. (660 aa) |
| | Pwp1 | Periodic tryptophan protein 1 homolog; Chromatin-associated factor that regulates transcription (By similarity). Regulates Pol I-mediated rRNA biogenesis and, probably, Pol III-mediated transcription (By similarity). Regulates the epigenetic status of rDNA (By similarity). (501 aa) |
| | Nob1 | RNA-binding protein NOB1; May play a role in mRNA degradation (By similarity). Endonuclease required for processing of 20S pre-rRNA precursor and biogenesis of 40S ribosomal subunits (By similarity). (403 aa) |
| | Ppan | Suppressor of SWI4 1 homolog; May have a role in cell growth. (470 aa) |
| | Emg1 | Ribosomal RNA small subunit methyltransferase NEP1; S-adenosyl-L-methionine-dependent pseudouridine N(1)- methyltransferase that methylates pseudouridine at position 1248 (Psi1248) in 18S rRNA. Involved the biosynthesis of the hypermodified N1-methyl-N3-(3-amino-3-carboxypropyl) pseudouridine (m1acp3-Psi) conserved in eukaryotic 18S rRNA. Is not able to methylate uridine at this position. Has also an essential role in 40S ribosomal subunit biogenesis independent on its methyltransferase activity, facilitating the incorporation of ribosomal protein S19 during the formation of pre- ribos [...] (244 aa) |
| | Utp20 | Small subunit processome component 20 homolog; Involved in 18S pre-rRNA processing. Associates with U3 snoRNA (By similarity). (2789 aa) |
| | Ddx56 | Probable ATP-dependent RNA helicase DDX56; May play a role in later stages of the processing of the pre- ribosomal particles leading to mature 60S ribosomal subunits. Has intrinsic ATPase activity (By similarity); Belongs to the DEAD box helicase family. DDX56/DBP9 subfamily. (546 aa) |
| | Tep1 | Telomerase protein component 1; Component of the telomerase ribonucleoprotein complex that is essential for the replication of chromosome termini (By similarity). Also component of the ribonucleoprotein vaults particle, a multi- subunit structure involved in nucleo-cytoplasmic transport. Responsible for the localizing and stabilizing vault RNA (vRNA) association in the vault ribonucleoprotein particle. (2629 aa) |
| | Rbm28 | RNA-binding protein 28; Nucleolar component of the spliceosomal ribonucleoprotein complexes. (750 aa) |
| | Ddx49 | Probable ATP-dependent RNA helicase DDX49. (480 aa) |
| | Retreg3 | Reticulophagy regulator 3; Mediates NRF1-enhanced neurite outgrowth. Belongs to the RETREG family. (466 aa) |
| | Ddx27 | Probable ATP-dependent RNA helicase DDX27; Probable ATP-dependent RNA helicase. Component of the nucleolar ribosomal RNA (rRNA) processing machinery that regulates 3' end formation of ribosomal 47S rRNA; Belongs to the DEAD box helicase family. DDX27/DRS1 subfamily. (760 aa) |
| | Rrp7a | Ribosomal RNA-processing protein 7 homolog A; Belongs to the RRP7 family. (280 aa) |
| | Nol11 | Nucleolar protein 11; Ribosome biogenesis factor. May be required for both optimal rDNA transcription and small subunit (SSU) pre-rRNA processing at sites A', A0, 1 and 2b (By similarity). (723 aa) |
| | Aatf | Protein AATF; May function as a general inhibitor of the histone deacetylase HDAC1. Binding to the pocket region of RB1 may displace HDAC1 from RB1/E2F complexes, leading to activation of E2F target genes and cell cycle progression. Conversely, displacement of HDAC1 from SP1 bound to the CDKN1A promoter leads to increased expression of this CDK inhibitor and blocks cell cycle progression (By similarity). Belongs to the AATF family. (526 aa) |
| | Nop9 | Nucleolar protein 9; Belongs to the NOP9 family. (636 aa) |
| | Ltv1 | Protein LTV1 homolog; Belongs to the LTV1 family. (470 aa) |
| | Ddx50 | ATP-dependent RNA helicase DDX50. (734 aa) |
| | Pno1 | RNA-binding protein PNO1; Positively regulates dimethylation of two adjacent adenosines in the loop of a conserved hairpin near the 3'-end of 18S rRNA. Belongs to the PNO1 family. (248 aa) |
| | Pes1 | Pescadillo homolog; Component of the PeBoW complex, which is required for maturation of 28S and 5.8S ribosomal RNAs and formation of the 60S ribosome; Belongs to the pescadillo family. (584 aa) |
| | Ftsj3 | pre-rRNA 2'-O-ribose RNA methyltransferase FTSJ3; RNA 2'-O-methyltransferase involved in the processing of the 34S pre-rRNA to 18S rRNA and in 40S ribosomal subunit formation. (838 aa) |
| | Fcf1 | rRNA-processing protein FCF1 homolog; Essential protein involved in pre-rRNA processing and 40S ribosomal subunit assembly; Belongs to the UTP23/FCF1 family. FCF1 subfamily. (198 aa) |
| | Tert | Telomerase reverse transcriptase; Telomerase is a ribonucleoprotein enzyme essential for the replication of chromosome termini in most eukaryotes. Active in progenitor and cancer cells. Inactive, or very low activity, in normal somatic cells. Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. Catalyzes the RNA-dependent extension of 3'-chromosomal termini with the 6-nuc [...] (1122 aa) |
| | Dimt1 | Probable dimethyladenosine transferase; Specifically dimethylates two adjacent adenosines in the loop of a conserved hairpin near the 3'-end of 18S rRNA in the 40S particle. Involved in the pre-rRNA processing steps leading to small-subunit rRNA production independently of its RNA-modifying catalytic activity. (313 aa) |
| | Pinx1 | PIN2/TERF1-interacting telomerase inhibitor 1; Microtubule-binding protein essential for faithful chromosome segregation. Mediates TRF1 and TERT accumulation in nucleolus and enhances TRF1 binding to telomeres. Inhibits telomerase activity. May inhibit cell proliferation and act as tumor suppressor (By similarity). (332 aa) |
| | Ngdn | Neuroguidin; Inhibits mRNA translation in a cytoplasmic polyadenylation element (CPE)-dependent manner; Belongs to the SAS10 family. (315 aa) |
| | Brix1 | Ribosome biogenesis protein BRX1 homolog; Required for biogenesis of the 60S ribosomal subunit. Belongs to the BRX1 family. (353 aa) |
| | Dcaf13 | DDB1- and CUL4-associated factor 13; Possible role in ribosomal RNA processing. May function as a substrate receptor for CUL4-DDB1 E3 ubiquitin-protein ligase complex (By similarity); Belongs to the WD repeat DCAF13/WDSOF1 family. (445 aa) |
| | Hgh1 | Protein HGH1 homolog; Belongs to the HGH1 family. (393 aa) |
| | Bop1 | Ribosome biogenesis protein BOP1; Component of the PeBoW complex, which is required for maturation of 28S and 5.8S ribosomal RNAs and formation of the 60S ribosome. (732 aa) |
| | Riok2 | Serine/threonine-protein kinase RIO2; Serine/threonine-protein kinase involved in the final steps of cytoplasmic maturation of the 40S ribosomal subunit. Involved in export of the 40S pre-ribosome particles (pre-40S) from the nucleus to the cytoplasm. Its kinase activity is required for the release of NOB1, PNO1 and LTV1 from the late pre-40S and the processing of 18S-E pre- rRNA to the mature 18S rRNA. May regulate the timing of the metaphase- anaphase transition during mitotic progression, and its phosphorylation, may regulate this function. (547 aa) |
| | Rrp36 | Ribosomal RNA processing protein 36 homolog; Involved in the early processing steps of the pre-rRNA in the maturation pathway leading to the 18S rRNA; Belongs to the RRP36 family. (226 aa) |
| | Bysl | Bystin; Required for processing of 20S pre-rRNA precursor and biogenesis of 40S ribosomal subunits; Belongs to the bystin family. (436 aa) |
| | Cebpz | CCAAT/enhancer-binding protein zeta; Stimulates transcription from the HSP70 promoter; Belongs to the CBF/MAK21 family. (1052 aa) |
| | Wdr46 | WD repeat-containing protein 46; Scaffold component of the nucleolar structure. Required for localization of DDX21 and NCL to the granular compartment of the nucleolus. (622 aa) |
| | Noc3l | Nucleolar complex protein 3 homolog; May be required for adipogenesis. (807 aa) |
| | Ttc4 | Tetratricopeptide repeat protein 4; May act as a co-chaperone for HSP90AB1 (By similarity). Belongs to the TTC4 family. (386 aa) |
| | Wdr75 | WD repeat-containing protein 75; Ribosome biogenesis factor. Involved in nucleolar processing of pre-18S ribosomal RNA. Required for optimal pre-ribosomal RNA transcription by RNA polymerase I. (830 aa) |
| | Wdr12 | Ribosome biogenesis protein WDR12; Component of the PeBoW complex, which is required for maturation of 28S and 5.8S ribosomal RNAs and formation of the 60S ribosome. (423 aa) |
| | Imp4 | U3 small nucleolar ribonucleoprotein protein IMP4; Component of the 60-80S U3 small nucleolar ribonucleoprotein (U3 snoRNP). Required for the early cleavages during pre-18S ribosomal RNA processing (By similarity). (291 aa) |
| | Nifk | MKI67 FHA domain-interacting nucleolar phosphoprotein. (317 aa) |
| | Nop10 | H/ACA ribonucleoprotein complex subunit 3; Required for ribosome biogenesis and telomere maintenance. Part of the H/ACA small nucleolar ribonucleoprotein (H/ACA snoRNP) complex, which catalyzes pseudouridylation of rRNA. This involves the isomerization of uridine such that the ribose is subsequently attached to C5, instead of the normal N1. Each rRNA can contain up to 100 pseudouridine ('psi') residues, which may serve to stabilize the conformation of rRNAs. May also be required for correct processing or intranuclear trafficking of TERC, the RNA component of the telomerase reverse tran [...] (64 aa) |
| | Nat10 | RNA cytidine acetyltransferase; RNA cytidine acetyltransferase that catalyzes the formation of N(4)-acetylcytidine (ac4C) modification on mRNAs, 18S rRNA and tRNAs. Catalyzes ac4C modification of a broad range of mRNAs, enhancing mRNA stability and translation. mRNA ac4C modification is frequently present within wobble cytidine sites and promotes translation efficiency. Mediates the formation of ac4C at position 1842 in 18S rRNA (By similarity). May also catalyze the formation of ac4C at position 1337 in 18S rRNA (By similarity). Required for early nucleolar cleavages of precursor rRNA [...] (1024 aa) |
| | Eif6 | Eukaryotic translation initiation factor 6; Binds to the 60S ribosomal subunit and prevents its association with the 40S ribosomal subunit to form the 80S initiation complex in the cytoplasm. Behaves as a stimulatory translation initiation factor downstream insulin/growth factors. Is also involved in ribosome biogenesis. Associates with pre-60S subunits in the nucleus and is involved in its nuclear export. Cytoplasmic release of TIF6 from 60S subunits and nuclear relocalization is promoted by a RACK1 (RACK1)- dependent protein kinase C activity. In tissues responsive to insulin, contro [...] (245 aa) |
| | Dhx36 | ATP-dependent DNA/RNA helicase DHX36; Multifunctional ATP-dependent helicase that unwinds G- quadruplex (G4) structures. Plays a role in many biological processes such as genomic integrity, gene expression regulations and as a sensor to initiate antiviral responses. G4 structures correspond to helical structures containing guanine tetrads (By similarity). Binds with high affinity to and unwinds G4 structures that are formed in nucleic acids (G4-ADN and G4-RNA) (By similarity). Plays a role in genomic integrity (By similarity). Converts the G4-RNA structure present in telomerase RNA tem [...] (1001 aa) |
| | Nmd3 | 60S ribosomal export protein NMD3; Acts as an adapter for the XPO1/CRM1-mediated export of the 60S ribosomal subunit; Belongs to the NMD3 family. (503 aa) |
| | Gar1 | H/ACA ribonucleoprotein complex subunit 1; Required for ribosome biogenesis and telomere maintenance. Part of the H/ACA small nucleolar ribonucleoprotein (H/ACA snoRNP) complex, which catalyzes pseudouridylation of rRNA. This involves the isomerization of uridine such that the ribose is subsequently attached to C5, instead of the normal N1. Each rRNA can contain up to 100 pseudouridine ('psi') residues, which may serve to stabilize the conformation of rRNAs. May also be required for correct processing or intranuclear trafficking of TERC, the RNA component of the telomerase reverse tran [...] (231 aa) |
| | Rpf1 | Ribosome production factor 1; May be required for ribosome biogenesis. (349 aa) |
| | Nol6 | Nucleolar protein 6; Belongs to the NRAP family. (1152 aa) |
| | Ebna1bp2 | Probable rRNA-processing protein EBP2; Required for the processing of the 27S pre-rRNA. (306 aa) |
| | Zfp593 | Zinc finger protein 593; Negatively modulates the DNA binding activity of Oct-2 and therefore its transcriptional regulatory activity. Could act either by binding to DNA octamer or by interacting with Oct-2. May also be a modulator of other octamer-binding proteins (By similarity). (134 aa) |
| | Gnl2 | Nucleolar GTP-binding protein 2; GTPase that associates with pre-60S ribosomal subunits in the nucleolus and is required for their nuclear export and maturation (By similarity). May promote cell proliferation possibly by increasing p53/TP53 protein levels, and consequently those of its downstream product CDKN1A/p21, and decreasing RPL23A protein levels (By similarity). (728 aa) |
| | Utp11 | Probable U3 small nucleolar RNA-associated protein 11; Involved in nucleolar processing of pre-18S ribosomal RNA. (253 aa) |
| | Sdad1 | Protein SDA1 homolog; Required for 60S pre-ribosomal subunits export to the cytoplasm. (687 aa) |
| | Ddx51 | ATP-dependent RNA helicase DDX51; ATP-binding RNA helicase involved in the biogenesis of 60S ribosomal subunits; Belongs to the DEAD box helicase family. DDX51/DBP6 subfamily. (639 aa) |
| | Rbm19 | Probable RNA-binding protein 19; Plays a role in embryo pre-implantation development. Belongs to the RRM MRD1 family. (952 aa) |
| | Ddx54 | ATP-dependent RNA helicase DDX54; Has RNA-dependent ATPase activity. Represses the transcriptional activity of nuclear receptors (By similarity). Belongs to the DEAD box helicase family. DDX54/DBP10 subfamily. (874 aa) |
| | Bms1 | BMS1 homolog, ribosome assembly protein (Yeast). (1284 aa) |
| | Ddx47 | Probable ATP-dependent RNA helicase DDX47; Involved in apoptosis. May have a role in rRNA processing and mRNA splicing. Associates with pre-rRNA precursors (By similarity). Belongs to the DEAD box helicase family. DDX47/RRP3 subfamily. (455 aa) |
| | Mphosph10 | U3 small nucleolar ribonucleoprotein protein MPP10; Component of the 60-80S U3 small nucleolar ribonucleoprotein (U3 snoRNP). Required for the early cleavages during pre-18S ribosomal RNA processing (By similarity); Belongs to the MPP10 family. (681 aa) |
| | Bccip | BRCA2 and CDKN1A-interacting protein; During interphase, required for microtubule organizing and anchoring activities. During mitosis, required for the organization and stabilization of the spindle pole. May promote cell cycle arrest by enhancing the inhibition of CDK2 activity by CDKN1A. May be required for repair of DNA damage by homologous recombination in conjunction with BRCA2. May not be involved in non-homologous end joining (NHEJ) (By similarity). (316 aa) |
| | Dkc1 | H/ACA ribonucleoprotein complex subunit DKC1; Catalytic subunit of H/ACA small nucleolar ribonucleoprotein (H/ACA snoRNP) complex, which catalyzes pseudouridylation of rRNA. This involves the isomerization of uridine such that the ribose is subsequently attached to C5, instead of the normal N1. Each rRNA can contain up to 100 pseudouridine ('psi') residues, which may serve to stabilize the conformation of rRNAs. Required for ribosome biogenesis and telomere maintenance (By similarity). Also required for correct processing or intranuclear trafficking of TERC, the RNA component of the te [...] (509 aa) |
| | Mak16 | Protein MAK16 homolog. (296 aa) |
| | Nip7 | 60S ribosome subunit biogenesis protein NIP7 homolog; Required for proper 34S pre-rRNA processing and 60S ribosome subunit assembly. (180 aa) |
| | Rsl24d1 | Probable ribosome biogenesis protein RLP24; Involved in the biogenesis of the 60S ribosomal subunit. Ensures the docking of GTPBP4/NOG1 to pre-60S particles (By similarity). (163 aa) |
| | Imp3 | U3 small nucleolar ribonucleoprotein protein IMP3; Component of the 60-80S U3 small nucleolar ribonucleoprotein (U3 snoRNP). Required for the early cleavages during pre-18S ribosomal RNA processing (By similarity). (184 aa) |
| | Nol10 | Nucleolar protein 10. (687 aa) |
| | Esf1 | ESF1 homolog; May constitute a novel regulatory system for basal transcription. Negatively regulates ABT1 (By similarity). (845 aa) |
| | Fbl | rRNA 2'-O-methyltransferase fibrillarin; S-adenosyl-L-methionine-dependent methyltransferase that has the ability to methylate both RNAs and proteins. Involved in pre-rRNA processing by catalyzing the site-specific 2'-hydroxyl methylation of ribose moieties in pre-ribosomal RNA (By similarity). Site specificity is provided by a guide RNA that base pairs with the substrate. Methylation occurs at a characteristic distance from the sequence involved in base pairing with the guide RNA (By similarity). Also acts as a protein methyltransferase by mediating methylation of 'Gln-105' of histone [...] (327 aa) |
| | Noc4l | Nucleolar complex protein 4 homolog. (516 aa) |
| | Nop14 | Nucleolar protein 14; Involved in nucleolar processing of pre-18S ribosomal RNA. Has a role in the nuclear export of 40S pre-ribosomal subunit to the cytoplasm (By similarity). (860 aa) |
| | Rrp9 | U3 small nucleolar RNA-interacting protein 2; Component of a nucleolar small nuclear ribonucleoprotein particle (snoRNP) thought to participate in the processing and modification of pre-ribosomal RNA (pre-rRNA). (475 aa) |
| | Tsr1 | Pre-rRNA-processing protein TSR1 homolog; Required during maturation of the 40S ribosomal subunit in the nucleolus. (803 aa) |
| | Kri1 | Protein KRI1 homolog; Belongs to the KRI1 family. (705 aa) |
| | Rrp12 | RRP12-like protein. (1295 aa) |
| | Pak1ip1 | P21-activated protein kinase-interacting protein 1; Negatively regulates the PAK1 kinase. PAK1 is a member of the PAK kinase family, which has been shown to play a positive role in the regulation of signaling pathways involving MAPK8 and RELA. PAK1 exists as an inactive homodimer, which is activated by binding of small GTPases such as CDC42 to an N-terminal regulatory domain. PAK1IP1 also binds to the N-terminus of PAK1, and inhibits the specific activation of PAK1 by CDC42. May be involved in ribosomal large subunit assembly. (382 aa) |
| | Ddx21 | Nucleolar RNA helicase 2; RNA helicase that acts as a sensor of the transcriptional status of both RNA polymerase (Pol) I and II: promotes ribosomal RNA (rRNA) processing and transcription from polymerase II (Pol II) (By similarity). Binds various RNAs, such as rRNAs, snoRNAs, 7SK and, at lower extent, mRNAs (By similarity). In the nucleolus, localizes to rDNA locus, where it directly binds rRNAs and snoRNAs, and promotes rRNA transcription, processing and modification (By similarity). Required for rRNA 2'-O-methylation, possibly by promoting the recruitment of late-acting snoRNAs SNOR [...] (851 aa) |
| | Wdr74 | WD repeat-containing protein 74; Regulatory protein of the MTREX-exosome complex involved in the synthesis of the 60S ribosomal subunit. Participates in an early cleavage of the pre-rRNA processing pathway in cooperation with NVL (By similarity). Required for blastocyst formation, is necessary for RNA transcription, processing and/or stability during preimplantation development. (384 aa) |
| | Nop53 | Ribosome biogenesis protein NOP53; Nucleolar protein which is involved in the integration of the 5S RNP into the ribosomal large subunit during ribosome biogenesis. In ribosome biogenesis, may also play a role in rRNA transcription (By similarity). Also functions as a nucleolar sensor that regulates the activation of p53/TP53 in response to ribosome biogenesis perturbation, DNA damage and other stress conditions. DNA damage or perturbation of ribosome biogenesis disrupt the interaction between NOP53 and RPL11 allowing RPL11 transport to the nucleoplasm where it can inhibit MDM2 and all [...] (484 aa) |
| | Dnttip2 | Deoxynucleotidyltransferase terminal-interacting protein 2; Regulates the transcriptional activity of DNTT and ESR1. May function as a chromatin remodeling protein (By similarity). (758 aa) |
| | Pwp2 | Periodic tryptophan protein 2 homolog. (919 aa) |
| | Abt1 | Activator of basal transcription 1; Could be a novel TATA-binding protein (TBP) which can function as a basal transcription activator. Can act as a regulator of basal transcription for class II genes; Belongs to the ESF2/ABP1 family. (269 aa) |
| | Utp6 | U3 small nucleolar RNA-associated protein 6 homolog; Involved in nucleolar processing of pre-18S ribosomal RNA. Belongs to the UTP6 family. (597 aa) |
| | Gnl3 | Guanine nucleotide-binding protein-like 3; May be required to maintain the proliferative capacity of stem cells (By similarity). Stabilizes MDM2 by preventing its ubiquitination, and hence proteasomal degradation; Belongs to the TRAFAC class YlqF/YawG GTPase family. (538 aa) |
| | Nop2 | Probable 28S rRNA (cytosine-C(5))-methyltransferase; Involved in ribosomal large subunit assembly. S-adenosyl-L- methionine-dependent methyltransferase that specifically methylates the C(5) position of cytosine 4447 in 28S rRNA. May play a role in the regulation of the cell cycle and the increased nucleolar activity that is associated with the cell proliferation. (794 aa) |
| | Coil | Coilin; Component of nuclear coiled bodies, also known as Cajal bodies or CBs, which are involved in the modification and assembly of nucleoplasmic snRNPs. (573 aa) |
| | Wrap53 | Telomerase Cajal body protein 1; RNA chaperone that plays a key role in telomere maintenance and RNA localization to Cajal bodies. Specifically recognizes and binds the Cajal body box (CAB box) present in both small Cajal body RNAs (scaRNAs) and telomerase RNA template component (TERC). Essential component of the telomerase holoenzyme complex, a ribonucleoprotein complex essential for the replication of chromosome termini that elongates telomeres in most eukaryotes (By similarity). In the telomerase holoenzyme complex, required to stimulate the catalytic activity of the complex. Acts b [...] (532 aa) |
| | Utp15 | U3 small nucleolar RNA-associated protein 15 homolog; Ribosome biogenesis factor. Involved in nucleolar processing of pre-18S ribosomal RNA. Required for optimal pre-ribosomal RNA transcription by RNA polymerase I. (528 aa) |
| | Wdr43 | WD repeat-containing protein 43; Ribosome biogenesis factor that coordinates hyperactive transcription and ribogenesis. Involved in nucleolar processing of pre-18S ribosomal RNA. Required for optimal pre-ribosomal RNA transcription by RNA polymerase I (By similarity). Essential for stem cell pluripotency and embryonic development. In the nucleoplasm, recruited by promoter-associated/nascent transcripts and transcription to active promoters where it facilitates releases of elongation factor P-TEFb and paused RNA polymerase II to allow transcription elongation and maintain high-level exp [...] (677 aa) |
| | Utp4 | U3 small nucleolar RNA-associated protein 4 homolog; Ribosome biogenesis factor. Involved in nucleolar processing of pre-18S ribosomal RNA. Involved in small subunit (SSU) pre-rRNA processing at sites A', A0, 1 and 2b. Required for optimal pre- ribosomal RNA transcription by RNA polymerase. May be a transcriptional regulator. Acts as a positive regulator of HIVEP1. (686 aa) |
| | Rbm34 | RNA-binding protein 34. (442 aa) |
| | Surf6 | Surfeit locus protein 6; Binds to both DNA and RNA in vitro, with a stronger binding capacity for RNA. May represent a nucleolar constitutive protein involved in ribosomal biosynthesis or assembly. Belongs to the SURF6 family. (355 aa) |
| | Ddx52 | Probable ATP-dependent RNA helicase DDX52; Belongs to the DEAD box helicase family. DDX52/ROK1 subfamily. (598 aa) |
| | Utp14b | U3 small nucleolar RNA-associated protein 14 homolog B; Essential for spermatogenesis. May be required specifically for ribosome biogenesis and hence protein synthesis during male meiosis; Belongs to the UTP14 family. (780 aa) |
| | Wdr36 | WD repeat domain 36. (899 aa) |
| | Heatr1 | HEAT repeat-containing 1. (2143 aa) |
| | Rrp1 | Ribosomal RNA processing protein 1 homolog A; Plays a critical role in the generation of 28S rRNA. (494 aa) |
| | Zfp622 | Zinc finger protein 622; May behave as an activator of the bound transcription factor, MYBL2, and be involved in embryonic development. (476 aa) |
| | Wdr3 | WD repeat-containing protein 3. (942 aa) |
| | Ddx10 | Probable ATP-dependent RNA helicase DDX10; Putative ATP-dependent RNA helicase. (875 aa) |
| | Rcl1 | RNA 3'-terminal phosphate cyclase-like protein; Does not have cyclase activity. Plays a role in 40S- ribosomal-subunit biogenesis in the early pre-rRNA processing steps at sites A0, A1 and A2 that are required for proper maturation of the 18S RNA (By similarity); Belongs to the RNA 3'-terminal cyclase family. Type 2 subfamily. (373 aa) |
| | Utp18 | U3 small nucleolar RNA-associated protein 18 homolog; Involved in nucleolar processing of pre-18S ribosomal RNA. Belongs to the WD repeat UTP18 family. (552 aa) |
| | Ddx55 | ATP-dependent RNA helicase DDX55; Probable ATP-binding RNA helicase. (600 aa) |
| | Rrs1 | Ribosome biogenesis regulatory protein homolog; Involved in ribosomal large subunit assembly. May regulate the localization of the 5S RNP/5S ribonucleoprotein particle to the nucleolus. (365 aa) |
| | Pdcd11 | Protein RRP5 homolog; Essential for the generation of mature 18S rRNA, specifically necessary for cleavages at sites A0, 1 and 2 of the 47S precursor. Directly interacts with U3 snoRNA (By similarity). (1862 aa) |
| | Nsa2 | Ribosome biogenesis protein NSA2 homolog; Involved in the biogenesis of the 60S ribosomal subunit. May play a part in the quality control of pre-60S particles (By similarity). (260 aa) |
| | Pum3 | Pumilio homolog 3; Inhibits the poly(ADP-ribosyl)ation activity of PARP1 and the degradation of PARP1 by CASP3 following genotoxic stress. Binds to double-stranded RNA or DNA without sequence specificity. Involved in development of the eye and of primordial germ cells. (648 aa) |
| | Dqx1 | ATP-dependent RNA helicase DQX1. (718 aa) |
| | Glmn | Glomulin; Regulatory component of cullin-RING-based SCF (SKP1-Cullin-F- box protein) E3 ubiquitin-protein ligase complexes. Inhibits E3 ubiquitin ligase activity by binding to the RING domain of RBX1 and inhibiting its interaction with the E2 ubiquitin-conjugating enzyme CDC34. Inhibits RBX1-mediated neddylation of CUL1 (By similarity). Required for normal stability and normal cellular levels of key components of SCF ubiquitin ligase complexes, including FBXW7, RBX1, CUL1, CUL2, CUL3, CUL4A, and thereby contributes to the regulation of CCNE1 and MYC levels. Essential for normal develop [...] (596 aa) |
| | Utp14a | U3 small nucleolar RNA-associated protein 14 homolog A; May be required for ribosome biogenesis; Belongs to the UTP14 family. (767 aa) |
| | Rrp1b | Ribosomal RNA processing protein 1 homolog B; Positively regulates DNA damage-induced apoptosis by acting as a transcriptional coactivator of proapoptotic target genes of the transcriptional activator E2F1 (By similarity). Likely to play a role in ribosome biogenesis by targeting serine/threonine protein phosphatase PP1 to the nucleolus (By similarity). Involved in regulation of mRNA splicing. Inhibits SIPA1 GTPase activity. Involved in regulating expression of extracellular matrix genes. Associates with chromatin and may play a role in modulating chromatin structure (By similarity). B [...] (724 aa) |
| | Utp25 | Digestive organ expansion factor homolog; Regulates the p53 pathway to control the expansion growth of digestive organs; Belongs to the def family. (768 aa) |
| | Bud23 | Probable 18S rRNA (guanine-N(7))-methyltransferase; S-adenosyl-L-methionine-dependent methyltransferase that specifically methylates the N(7) position of a guanine in 18S rRNA. Requires the methyltransferase adapter protein TRM112 for full rRNA methyltransferase activity. Involved in the pre-rRNA processing steps leading to small-subunit rRNA production independently of its RNA- modifying catalytic activity. Important for biogenesis end export of the 40S ribosomal subunit independent on its methyltransferase activity. Locus-specific steroid receptor coactivator. Potentiates transactiva [...] (281 aa) |
| | Gnl1 | Guanine nucleotide-binding protein-like 1; Possible regulatory or functional link with the histocompatibility cluster. (607 aa) |
| | Lyar | Cell growth-regulating nucleolar protein; Plays a role in the maintenance of the appropriate processing of 47S/45S pre-rRNA to 32S/30S pre-rRNAs and their subsequent processing to produce 18S and 28S rRNAs (By similarity). Also acts at the level of transcription regulation. Along with PRMT5, binds embryonic globin promoter (By similarity). Represses the expression of embryonic globin Hbb-y gene. In neuroblastoma cells, may also repress the expression of oxidative stress genes, including CHAC1, HMOX1, SLC7A11, ULBP1 and that encoding the small nucleolar RNA SNORD41 (By similarity). Pref [...] (388 aa) |
| | Mcc | Mutated in colorectal cancers. (1003 aa) |
| | Utp3 | Something about silencing protein 10; Essential for gene silencing: has a role in the structure of silenced chromatin. Plays a role in the developing brain. Belongs to the SAS10 family. (469 aa) |
| | Gcc1 | GRIP and coiled-coil domain-containing protein 1; Probably involved in maintaining Golgi structure. (778 aa) |
| | Snu13 | NHP2-like protein 1, N-terminally processed; Involved in pre-mRNA splicing as component of the spliceosome. Binds to the 5'-stem-loop of U4 snRNA and thereby contributes to spliceosome assembly. The protein undergoes a conformational change upon RNA-binding. (128 aa) |
| | Rrp8 | Ribosomal RNA-processing protein 8; Essential component of the eNoSC (energy-dependent nucleolar silencing) complex, a complex that mediates silencing of rDNA in response to intracellular energy status and acts by recruiting histone- modifying enzymes. The eNoSC complex is able to sense the energy status of cell: upon glucose starvation, elevation of NAD(+)/NADP(+) ratio activates SIRT1, leading to histone H3 deacetylation followed by dimethylation of H3 at 'Lys-9' (H3K9me2) by SUV39H1 and the formation of silent chromatin in the rDNA locus. In the complex, RRP8 binds to H3K9me2 and pr [...] (503 aa) |
| | Spout1 | Putative methyltransferase C9orf114 homolog; Required for association of the centrosomes with the poles of the bipolar mitotic spindle during metaphase. Also involved in chromosome alignment. May promote centrosome maturation probably by recruiting A-kinase anchor protein AKAP9 to centrosomes in early mitosis. Binds specifically to miRNA MIR145 hairpin, regulates MIR145 expression at a postranscriptional level (By similarity). (385 aa) |
| | Nop56 | Nucleolar protein 56; Involved in the early to middle stages of 60S ribosomal subunit biogenesis. Core component of box C/D small nucleolar ribonucleoprotein (snoRNP) particles. Required for the biogenesis of box C/D snoRNAs such U3, U8 and U14 snoRNAs (By similarity). Belongs to the NOP5/NOP56 family. (580 aa) |
| | Nle1 | Notchless protein homolog 1; Plays a role in regulating Notch activity (Probable). Plays a role in regulating the expression of CDKN1A and several members of the Wnt pathway, probably via its effects on Notch activity. Required during embryogenesis for inner mass cell survival. (485 aa) |
| | Mrto4 | mRNA turnover protein 4 homolog; Component of the ribosome assembly machinery. Nuclear paralog of the ribosomal protein P0, it binds pre-60S subunits at an early stage of assembly in the nucleolus, and is replaced by P0 in cytoplasmic pre-60S subunits and mature 80S ribosomes. (239 aa) |
| | Ddx24 | ATP-dependent RNA helicase DDX24; ATP-dependent RNA helicase; Belongs to the DEAD box helicase family. DDX24/MAK5 subfamily. (903 aa) |
| | Gnl3l | Guanine nucleotide-binding protein-like 3-like protein; Stabilizes TERF1 telomeric association by preventing TERF1 recruitment by PML. Stabilizes TERF1 protein by preventing its ubiquitination and hence proteasomal degradation. Does so by interfering with TERF1-binding to FBXO4 E3 ubiquitin-protein ligase. Required for cell proliferation. By stabilizing TRF1 protein during mitosis, promotes metaphase-to-anaphase transition. Stabilizes MDM2 protein by preventing its ubiquitination, and hence proteasomal degradation. By acting on MDM2, may affect TP53 activity. Required for normal proces [...] (577 aa) |
| | Ddx31 | Probable ATP-dependent RNA helicase DDX31; Probable ATP-dependent RNA helicase (By similarity). Plays a role in ribosome biogenesis and TP53/p53 regulation through its interaction with NPM1 (By similarity); Belongs to the DEAD box helicase family. DDX31/DBP7 subfamily. (687 aa) |
| | Naf1 | H/ACA ribonucleoprotein complex non-core subunit NAF1; RNA-binding protein required for the maturation of box H/ACA snoRNPs complex and ribosome biogenesis. During assembly of the H/ACA snoRNPs complex, it associates with the complex and disappears during maturation of the complex and is replaced by NOLA1/GAR1 to yield mature H/ACA snoRNPs complex. Probably competes with NOLA1/GAR1 for binding with DKC1/NOLA4 (By similarity). (597 aa) |
| | Lsg1 | Large subunit GTPase 1 homolog; GTPase required for the XPO1/CRM1-mediated nuclear export of the 60S ribosomal subunit. Probably acts by mediating the release of NMD3 from the 60S ribosomal subunit after export into the cytoplasm (By similarity); Belongs to the TRAFAC class YlqF/YawG GTPase family. LSG1 subfamily. (644 aa) |
| | Rsl1d1 | Ribosomal L1 domain-containing protein 1; Regulates cellular senescence through inhibition of PTEN translation. Acts as a pro-apoptotic regulator in response to DNA damage. (452 aa) |
| | Pa2g4 | Proliferation-associated protein 2G4; May play a role in a ERBB3-regulated signal transduction pathway. Seems be involved in growth regulation. Acts a corepressor of the androgen receptor (AR) and is regulated by the ERBB3 ligand neuregulin-1/heregulin (HRG). Inhibits transcription of some E2F1- regulated promoters, probably by recruiting histone acetylase (HAT) activity. Binds RNA. Associates with 28S, 18S and 5.8S mature rRNAs, several rRNA precursors and probably U3 small nucleolar RNA. May be involved in regulation of intermediate and late steps of rRNA processing. May be involved [...] (394 aa) |
| | Nol12 | Nucleolar protein 12; May bind to 28S rRNA. In vitro binds single-stranded nucleic acids. (217 aa) |
| | Grwd1 | Glutamate-rich WD repeat-containing protein 1; Histone binding-protein that regulates chromatin dynamics and minichromosome maintenance (MCM) loading at replication origins, possibly by promoting chromatin openness. (446 aa) |
| | Utp23 | rRNA-processing protein UTP23 homolog; Involved in rRNA-processing and ribosome biogenesis. Belongs to the UTP23/FCF1 family. UTP23 subfamily. (249 aa) |
| | Nhp2 | H/ACA ribonucleoprotein complex subunit 2; Required for ribosome biogenesis and telomere maintenance. Part of the H/ACA small nucleolar ribonucleoprotein (H/ACA snoRNP) complex, which catalyzes pseudouridylation of rRNA. This involves the isomerization of uridine such that the ribose is subsequently attached to C5, instead of the normal N1. Each rRNA can contain up to 100 pseudouridine ('psi') residues, which may serve to stabilize the conformation of rRNAs. May also be required for correct processing or intranuclear trafficking of TERC, the RNA component of the telomerase reverse tran [...] (153 aa) |
| | Tbl3 | Transducin beta-like protein 3. (801 aa) |
| | Krr1 | KRR1 small subunit processome component homolog; Required for 40S ribosome biogenesis. Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly (By similarity). (380 aa) |
| | Shq1 | Protein SHQ1 homolog; Required for the quantitative accumulation of H/ACA ribonucleoproteins (RNPs), including telomerase, probably through the stabilization of DKC1, from the time of its synthesis until its association with NOP10, NHP2, and NAF1 at the nascent H/ACA RNA. Belongs to the SHQ1 family. (569 aa) |
| | Nolc1 | Nucleolar and coiled-body phosphoprotein 1; Nucleolar protein that acts as a regulator of RNA polymerase I by connecting RNA polymerase I with enzymes responsible for ribosomal processing and modification (By similarity). Required for neural crest specification: following monoubiquitination by the BCR(KBTBD8) complex, associates with TCOF1 and acts as a platform to connect RNA polymerase I with enzymes responsible for ribosomal processing and modification, leading to remodel the translational program of differentiating cells in favor of neural crest specification (By similarity). Invol [...] (702 aa) |
| | Fbll1 | rRNA/tRNA 2'-O-methyltransferase fibrillarin-like protein 1; S-adenosyl-L-methionine-dependent methyltransferase that has the ability to methylate both RNAs and proteins. Involved in pre-rRNA processing by catalyzing the site-specific 2'-hydroxyl methylation of ribose moieties in pre-ribosomal RNA. Also acts as a protein methyltransferase by mediating methylation of glutamine residues (By similarity). (314 aa) |
| | Dhx37 | DEAH (Asp-Glu-Ala-His) box polypeptide 37. (1150 aa) |
| | Gm20509 | Predicted gene 20509. (325 aa) |
| | Mdn1 | Midasin; Nuclear chaperone required for maturation and nuclear export of pre-60S ribosome subunits; Belongs to the midasin family. (5582 aa) |
| | Noc2l | Nucleolar complex protein 2 homolog; Acts as an inhibitor of histone acetyltransferase activity; prevents acetylation of all core histones by the EP300/p300 histone acetyltransferase at p53/TP53-regulated target promoters in a histone deacetylases (HDAC)-independent manner. Acts as a transcription corepressor of p53/TP53- and TP63-mediated transactivation of the p21/CDKN1A promoter. Involved in the regulation of p53/TP53-dependent apoptosis (By similarity). (750 aa) |
| | Rpf2 | Ribosome production factor 2 homolog; Involved in ribosomal large subunit assembly. May regulate the localization of the 5S RNP/5S ribonucleoprotein particle to the nucleolus; Belongs to the RPF2 family. (306 aa) |
| | Nop58 | Nucleolar protein 58; Required for 60S ribosomal subunit biogenesis (By similarity). Core component of box C/D small nucleolar ribonucleoprotein (snoRNP) particles. Required for the biogenesis of box C/D snoRNAs such as U3, U8 and U14 snoRNAs (By similarity). Belongs to the NOP5/NOP56 family. (536 aa) |
| | Gpatch4 | G patch domain-containing protein 4. (415 aa) |
| | Nsun6 | tRNA (cytosine(72)-C(5))-methyltransferase NSUN6; S-adenosyl-L-methionine-dependent methyltransferase that specifically methylates the C5 position of cytosine 72 in tRNA(Thr)(TGT) and tRNA(Cys)(GCA). In vitro also methylates tRNA(Thr)(AGT). Methylation requires, in the acceptor stem region, the presence of the 3'-CCA terminus, the target site C72, the discriminator base U73, and the second and third base pairs (2:71 and 3:70) in the tRNA substrates. (476 aa) |
| | Gtpbp4 | Nucleolar GTP-binding protein 1; Involved in the biogenesis of the 60S ribosomal subunit. (634 aa) |
