Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

Formamidopyrimidine-DNA glycosylase; Involved in base excision repair of DNA damaged by oxidation or by mutagenic agents. Acts as DNA glycosylase that recognizes and removes damaged bases. Can process efficiently 4,6-diamino-5- formamidopyrimidine (FapyA), 2,6-diamino-4- hydroxy-5- formamidopyrimidine (FapyG) and the further oxidation products of 8- oxoguanine (8-oxoG), such as guanidinohydantoin and spiroiminodihydantoin. Has marginal activity towards 8-oxoG. Has AP (apurinic/apyrimidinic) lyase activity. Cleaves the DNA backbone by beta-delta elimination to generate a single-strand b [...]

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

DNA ligase 1; Essential protein. DNA ligase that seals nicks in double- stranded DNA during DNA replication, DNA recombination and DNA repair. Involved in repair of both single strand breaks (SSBs) and double strand breaks (DSBs). Required in the endosperm for embryogenesis, probably to repair DNA-breaks generated by DME.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

DNA ligase 4; Efficiently joins single-strand breaks in a double-stranded polydeoxynucleotide in an ATP-dependent reaction. Involved in DNA non- homologous end joining (NHEJ) required for double-strand break repair. May be involved for T-DNA integration even if not absolutely required. Seems to be dispensable under normal growth conditions. Belongs to the ATP-dependent DNA ligase family.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

DNA ligase 6; DNA ligase that seals nicks in double-stranded DNA during DNA replication, DNA recombination and DNA repair (Probable). Required to maintain seed viability (e.g. longevity and storability) and during seed germination, probably by repairing DNA damage accumulated during seed development, storage and/or imbibition. Facilitates seed germination in cold conditions (2 degrees Celsius) and under oxidative stress (e.g. menadione, a genotoxic agent). Involved in repair of X- ray-induced damage ; Belongs to the ATP-dependent DNA ligase family.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

DNA repair protein RAD51 homolog 1; Binds to single and double-stranded DNA and exhibits DNA- dependent ATPase activity. Unwinds duplex DNA (By similarity). Component of the meiotic recombination pathway. Seems to play a role in mediating chromosome homology search, chromosome pairing and synapsis at early stages and probably chromosome crossing-over at later stages in meiosis. Probably is involved in the repair of meiotic double strand breaks (DBSs) generated by AtSPO11-1 and in homologous recombination. Its function is dispensable for vegetative growth and root mitosis.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

Cyclin-dependent protein kinase inhibitor SMR5; Probable cyclin-dependent protein kinase (CDK) inhibitor that functions as a repressor of mitosis in the endoreduplication cell cycle. Acts as a potent cell cycle inhibitor, regulating a hydroxyurea-dependent checkpoint in leaves. Essential to activate a high-light-dependent cell cycle checkpoint.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

Cyclin-dependent protein kinase inhibitor SMR7; Probable cyclin-dependent protein kinase (CDK) inhibitor that functions as a repressor of mitosis in the endoreduplication cell cycle. Acts as a potent cell cycle inhibitor, regulating a hydroxyurea-dependent checkpoint in leaves.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

SUPPRESSOR OF GAMMA RESPONSE 1; Transcription factor regulating the transcriptional activation response to gamma irradiation. Required for stem-cell death induced by UVB or by gamma irradiation. Not required for ATM activation, but participates in pathways governed by both ATM and ATR sensor kinases. Involved in DNA damage response (DDR) system that regulates cell cycle arrest. Functional homolog of animal p53. Regulates SMR5 and SMR7 transcription. Regulates DNA repair and cytokinin signaling separately and plays a key role in controlling lateral root formation under genotoxic stress.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

Wee1-like protein kinase; Cell cycle regulatory kinase that is not rate-limiting for cycle progression under normal growth conditions. Transcriptionally activated upon DNA stress or damage in an ATR- or ATM-dependent manner. Once activated, inhibits plant growth by arresting dividing cells in the G2 phase before proceeding into mitosis. Down-regulates CDKA-1 and CDKD-2 by tyrosine phosphorylation. May target principally CDKA-1.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

General transcription and DNA repair factor IIH helicase subunit XPB1; ATP-dependent 3'-5' DNA helicase, component of the general transcription and DNA repair factor IIH (TFIIH) core complex, which is involved in general and transcription-coupled nucleotide excision repair (NER) of damaged DNA and, when complexed to CAK, in RNA transcription by RNA polymerase II. In NER, TFIIH acts by opening DNA around the lesion to allow the excision of the damaged oligonucleotide and its replacement by a new DNA fragment. The ATPase activity of XPB, but not its helicase activity, is required for DNA [...]

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Serine/threonine-protein kinase ATR; Probable serine/threonine kinase. Plays a central role in cell-cycle regulation by transmitting DNA damage signals to downstream effectors of cell-cycle progression. May recognize the substrate consensus sequence [ST]-Q and phosphorylate histone variant H2AX to form H2AXS139ph at sites of DNA damage, thereby regulating DNA damage response mechanism. Seems to be required for the G2-phase checkpoint in response to replication blocks but not absolutely required in the G2- arrest response to double-strand breaks. May also be involved in the meiosis proc [...]

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Protein KINKY POLLEN; May be involved in membrane trafficking (By similarity). Required for tip growth in pollen tubes and root hairs. Belongs to the SABRE family.

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Cyclin-dependent kinase inhibitor 6; Binds and inhibits CYCD2-1/CDKA-1 complex kinase activity. Regulates cell division which is crucial for plant growth, development and morphogenesis. May inhibit CDK kinases specifically involved in the G1/S phase transition. Belongs to the CDI family. ICK/KRP subfamily.

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Paired amphipathic helix protein Sin3-like 1; Acts as a transcriptional repressor. An histone deacetylase (HDAC) activity is required for transcription repression. May play a role in telomere stability.

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Paired amphipathic helix protein Sin3-like 2; Acts as a transcriptional repressor. Plays roles in regulating gene expression and genome stability (By similarity).

Cyclin-D1-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Wee1-like protein kinase; Cell cycle regulatory kinase that is not rate-limiting for cycle progression under normal growth conditions. Transcriptionally activated upon DNA stress or damage in an ATR- or ATM-dependent manner. Once activated, inhibits plant growth by arresting dividing cells in the G2 phase before proceeding into mitosis. Down-regulates CDKA-1 and CDKD-2 by tyrosine phosphorylation. May target principally CDKA-1.

Cyclin-D4-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Cyclin-dependent kinase inhibitor 5; Inhibits CYCD2-1/CDKA-1 complex kinase activity without interaction with the complex.

Cyclin-D4-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Cyclin-dependent kinase inhibitor 6; Binds and inhibits CYCD2-1/CDKA-1 complex kinase activity. Regulates cell division which is crucial for plant growth, development and morphogenesis. May inhibit CDK kinases specifically involved in the G1/S phase transition. Belongs to the CDI family. ICK/KRP subfamily.

Cyclin-D4-1; May activate cell cycle in the root apical meristem (RAM) and promote embryonic root (radicle) protrusion.

Paired amphipathic helix protein Sin3-like 1; Acts as a transcriptional repressor. An histone deacetylase (HDAC) activity is required for transcription repression. May play a role in telomere stability.