Organism
Oryza sativa subsp. japonica
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.
Sequence
MEHVIGGKFKLGRKIGSGSFGELYLGVNIQSSEEVAIKLESVKSRHPQLHYESKLYMLLQGGTGIPHLKWFGVEGEYNVMVIDLLGPSLEDLFNYCNRKFSLKTVLMLADQMINRVEYMHTRGFLHRDIKPDNFLMGLGRKASQVYVIDYGLAKKYRDLQTHKHIPYRENKNLTGTARYASVNTHLGVEQSRRDDLESLGYVLMYFLRGSLPWQGLKAGTKKQKYDKISEKKMLTPVEVLCKSYPTEFISYFHYCRSLRFEDKPDYSYLKRLFRDLFIREGYQLDYIFDWTKQGSESNRLRSSGRTSGLVGPSAERTERAAARQDVPDRFSGTVDPFARRTGSGSGHYGEHTKHRNILDSLLAPKTAVDLDKRRPTSSSRNGSTSRKALLSSSRPSSGDPIDPNRSNLIPTSSGSSRPSTMQRLHQSTGLETRSSLTKTARNVHDDPTLRTFERLSISADRRK