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CKI1

Gene
CKI1
Protein
Histidine kinase CKI1
Organism
Arabidopsis thaliana
Length
1122 amino acids
Function
Essential protein. Functions as a histidine kinase and transmits the stress signal to a downstream MAPK cascade. This protein undergoes an ATP-dependent autophosphorylation at a conserved histidine residue in the kinase core, and a phosphoryl group is then transferred to a conserved aspartate residue in the receiver domain. Required for the development of megagametophyte in female gametophyte (embryo sac) independently of cytokinin. Contributes to vascular bundle formation and secondary growth in a cytokinin-independent manner, probably by promoting the maintenance of mitotic activity and/or identity of procambial cells. Seems to influence and promote the cytokinin signaling pathway.
Mass
125.033 kDa
Sequence
MMVKVTKLVASRPIVVFCVLAFLVVVFECIWISNWRTTTENLVKEVASFTEDLRTSLVSEIENIGKFTYAKTNLSTIGLARVIDSYITNNDTGFTEIQTQIAPLLFVAYSTILQVSQVSYISRDGLMFSYIAESNTSVAVFANSSSNSSRGDYTWYTQTVDQLTGRLNGNSTKSQSLDVTHTDWFQAAQSNNYTTAFVGTSLGGEDNETLIQSVVSLYSKKGLVSLGFPVKTLTEVLNSLNLHGEELYMWTKDGTVLVREGSLNDSFFISNGSICFGRESNSLWSQCIPENCSSSGYEVEIKRLRYQAFCSVIEVSGVPLRYTLMFPNKGGATRIKHQAEKAKYQLIVVMIFLGFGWPVWFVWFMMQATRREMHMRATLINQMEATQQAERKSMNKSQAFANASHDIRGALAGMKGLIDICRDGVKPGSDVDTTLNQVNVCAKDLVALLNSVLDMSKIESGKMQLVEEDFNLSKLLEDVIDFYHPVAMKKGVDVVLDPHDGSVFKFSNVRGDSGRLKQILNNLVSNAVKFTVDGHIAVRAWAQRPGSNSSVVLASYPKGVSKFVKSMFCKNKEESSTYETEISNSIRNNANTMEFVFEVDDTGKGIPMEMRKSVFENYVQVRETAQGHQGTGLGLGIVQSLVRLMGGEIRITDKAMGEKGTCFQFNVLLTTLESPPVSDMKVRQEIEAGGDYVSTPNLGLTINTSLGGSMNIRNLSPRFNNCLSSSPKQEGSRVVLLLKNEERRRVTEKYIKNLGIKVTVVEKWEHLSYALERLFGFSPQSSMGRAECSLSCPSSRELPFIGMDGIDSRSQLPKRRSISFSAVVLLVIDAKTGPFFELCDIVKQFRRGLPHGISCKVVWLNESSTRVSERGDISCSRPLHGSRLMEVLKMLPEFGGTVLKEPPTELQRESLLRHSFVAERSPKHKVQEEGPSSMFNKKLGKRIMASTDSESETRVKSVRTGRKPIGNPEDEQETSKPSDDEFLRGKRVLVVDDNFISRKVATGKLKKMGVSEVEQCDSGKEALRLVTEGLTQREEQGSVDKLPFDYIFMDCQMPEMDGYEATREIRKVEKSYGVRTPIIAVSGHDPGSEEARETIQAGMDAFLDKSLNQLANVIREIESKRH

Gene
CKI1
Protein
Choline kinase
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Length
582 amino acids
Function
Responsible for phosphatidylcholine synthesis via the CDP-choline pathway. Also exhibits ethanolamine kinase activity but at 14% efficiency compared with choline.
Similarity
Belongs to the choline/ethanolamine kinase family.
Mass
66.317 kDa
Sequence
MVQESRPGSVRSYSVGYQARSRSSSQRRHSLTRQRSSQRLIRTISIESDVSNITDDDDLRAVNEGVAGVQLDVSETANKGPRRASATDVTDSLGSTSSEYIEIPFVKETLDASLPSDYLKQDILNLIQSLKISKWYNNKKIQPVAQDMNLVKISGAMTNAIFKVEYPKLPSLLLRIYGPNIDNIIDREYELQILARLSLKNIGPSLYGCFVNGRFEQFLENSKTLTKDDIRNWKNSQRIARRMKELHVGVPLLSSERKNGSACWQKINQWLRTIEKVDQWVGDPKNIENSLLCENWSKFMDIVDRYHKWLISQEQGIEQVNKNLIFCHNDAQYGNLLFTAPVMNTPSLYTAPSSTSLTSQSSSLFPSSSNVIVDDIINPPKQEQSQDSKLVVIDFEYAGANPAAYDLANHLSEWMYDYNNAKAPHQCHADRYPDKEQVLNFLYSYVSHLRGGAKEPIDEEVQRLYKSIIQWRPTVQLFWSLWAILQSGKLEKKEASTAITREEIGPNGKKYIIKTEPESPEEDFVENDDEPEAGVSIDTFDYMAYGRDKIAVFWGDLIGLGIITEEECKNFSSFKFLDTSYL

Gene
CKI1
Protein
Casein kinase 1
Organism
Oryza sativa subsp. japonica
Length
463 amino acids
Function
Casein kinases are operationally defined by their preferential utilization of acidic proteins such as caseins as substrates. Can phosphorylate casein in vitro. Required for normal root development through modulation of cell elongation. Plants silencing CKI1 show abnormal root development, with reduced number of lateral and adventitious roots, and shortened primary roots as a result of reduced cell elongation. May be involved in abscisic acid (ABA) and brassinosteroid (BR) signaling pathways (PubMed:14535884). Plays an important role in the adaptive growth and fitness under low temperature (LT) conditions. May confer tolerance to LT through an auxin-dependent process (PubMed:24635058).
Similarity
Belongs to the protein kinase superfamily. CK1 Ser/Thr protein kinase family. Casein kinase I subfamily.
Mass
52.727 kDa
Sequence
MEHVIGGKFKLGRKIGSGSFGELYLGVNIQSSEEVAIKLESVKSRHPQLHYESKLYMLLQGGTGIPHLKWFGVEGEYNVMVIDLLGPSLEDLFNYCNRKFSLKTVLMLADQMINRVEYMHTRGFLHRDIKPDNFLMGLGRKASQVYVIDYGLAKKYRDLQTHKHIPYRENKNLTGTARYASVNTHLGVEQSRRDDLESLGYVLMYFLRGSLPWQGLKAGTKKQKYDKISEKKMLTPVEVLCKSYPTEFISYFHYCRSLRFEDKPDYSYLKRLFRDLFIREGYQLDYIFDWTKQGSESNRLRSSGRTSGLVGPSAERTERAAARQDVPDRFSGTVDPFARRTGSGSGHYGEHTKHRNILDSLLAPKTAVDLDKRRPTSSSRNGSTSRKALLSSSRPSSGDPIDPNRSNLIPTSSGSSRPSTMQRLHQSTGLETRSSLTKTARNVHDDPTLRTFERLSISADRRK

Gene
cki1
Protein
Casein kinase I homolog 1
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Length
446 amino acids
Function
Casein kinases are operationally defined by their preferential utilization of acidic proteins such as caseins as substrates.
Similarity
Belongs to the protein kinase superfamily. CK1 Ser/Thr protein kinase family. Casein kinase I subfamily.
Mass
50.425 kDa
Sequence
MSGQNNVVGVHYKVGRRIGEGSFGVIFEGTNLLNNQQVAIKFEPRRSDAPQLRDEYRTYKLLAGCTGIPNVYYFGQEGLHNILVIDLLGPSLEDLLDLCGRKFSVKTVAMAAKQMLARVQSIHEKSLVYRDIKPDNFLIGRPNSKNANMIYVVDFGMVKFYRDPVTKQHIPYREKKNLSGTARYMSINTHLGREQSRRDDLEALGHVFMYFLRGSLPWQGLKAATNKQKYERIGEKKQSTPLRELCAGFPEEFYKYMHYARNLAFDATPDYDYLQGLFSKVLERLNTTEDENFDWNLLNNGKGWQSLKSRNAETENQRSSKPPAPKLESKSPALQNHASTQNVVSKRSDYEKPFAEPHLNSASDSAEPNQNSLPNPPTETKATTTVPDRSGLATNQPAPVDVHDSSEERVTREQVQNATKETEAPKKKKSFWASILSCCSGSNEDT