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Details on Person UniProt:Q2V419-2 CDKB1-2

Class:IdReferenceIsoform:8970931
_chainChangeLogchain:1-311 added on Fri February 17 2017
_displayNameUniProt:Q2V419-2 CDKB1-2
_timestamp2025-02-21 19:16:28
chainchain:1-311
checksumA04E60AEF83E5BB0
commentFUNCTION Together with CDKB1-1, promotes both the last division in the stomatal cell lineage as well as the number of stomata (PubMed:20675570). In collaboration with MYB124 and MYB88, restrict the G1/S transition and chloroplast and nuclear number during stomatal formation, and normally maintain fate and developmental progression throughout the stomatal cell lineage (PubMed:24123248).CATALYTIC ACTIVITY L-seryl-[protein] + ATP = O-phospho-L-seryl-[protein] + ADP + H(+)CATALYTIC ACTIVITY L-threonyl-[protein] + ATP = O-phospho-L-threonyl-[protein] + ADP + H(+)CATALYTIC ACTIVITY [DNA-directed RNA polymerase] + ATP = phospho-[DNA-directed RNA polymerase] + ADP + H(+)SUBUNIT Interacts with CKS1.ALTERNATIVE PRODUCTS Expressed in flowers.DISRUPTION PHENOTYPE No apparent stomatal abnormalities. The double mutant cdkb1;1 cdkb1;2 has a reduced number of abnormal stomata consisting in single guard cells (GC) (PubMed:20675570). The quadruple mutant flp-1 myb88 cdkb1;1 cdkb1;2 has a reduced number of large single guard cells blocked at mitosis, with strongly altered shape and size and characterized by enlarged nucleus due to endomitosis and endocycling, as well as extensive chloroplast replication (PubMed:24123248).SIMILARITY Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily.SEQUENCE CAUTION Truncated C-terminus.
created[InstanceEdit:8964659] Weiser, JD
descriptionrecommendedName: Cyclin-dependent kinase B1-2 shortName: CDKB1;2 ecNumber: 2.7.11.22 ecNumber: 2.7.11.23
geneNameCDKB1-2
At2g38620
T6A23.18
identifierQ2V419
isoformParent
isSequenceChangedFALSE
keywordAlternative splicing
ATP-binding
Kinase
Nucleotide-binding
Phosphoprotein
Reference proteome
Serine/threonine-protein kinase
Transferase
modified[InstanceEdit:9037114] Weiser, JD
[InstanceEdit:9637257] Weiser, JD
[InstanceEdit:9676415] Weiser, JD
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9939033] Weiser, Joel, 2025-02-21
nameCDKB1-2
referenceDatabase[ReferenceDatabase:2] UniProt
secondaryIdentifierCKB12_ARATH
Q56XK5
Q9ZVI4
sequenceLength311
species[Species:170905] Arabidopsis thaliana
variantIdentifierQ2V419-2
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