Functions as an osmosensor histidine kinase that detects water stress 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. Positive regulator of drought and salt stress responses, and abscisic acid (ABA) signaling. Confers drought tolerance, probably by regulating levels of ABA accumulation. Plays a redundant role in regulating plant growth and development. Required for the regulation of desiccation processes during seed formation.

1207 amino acids

MRGDSFSMSIENLPDSPMGSRKKKMQIRKVFDKMTEWVTPWRSNLESPREMMILRGDVEQDEFQYASSHCLSSYYSVFVVRLAIMVMLAILIGLLTVLTWHFTRIYTKQSLQTLAYGLRYELLQRPVLRMWSVLNTTSELTTAQVKLSEYVIKKYDKPTTQEELVEMYQAMKDVTWALFASAKALNAITINYRNGFVQAFHRDPASSSTFYIFSDLKNYSISGTGPEDVSGWNNKSIHGNMSAIWYQQQLDPVTGENLGKPLKIPPDDLINIAGISQVPDGEASWHVTVSKYMDSPLLSAALPVFDASNKSIVAVVGVTTALYSVGQLMRDLVEVHGGHIYLTSQEGYLLATSTDGPLLKNTSNGPQLMKATDSEEWVIKSGAQWLEKTYGSKRPHVVHAENVKLGDQRYYIDSFYLNLKRLPIVGVVIIPRKFIMGKVDERAFKTLIILISASVCIFFIGCVCILILTNGVSKEMKLRAELIRQLDARRRAEASSNYKSQFLANMSHELRTPMAAVIGLLDILISDDCLSNEQYATVTQIRKCSTALLRLLNNILDLSKVESGKLVLEEAEFDLGRELEGLVDMFSVQCINHNVETVLDLSDDMPALVRGDSARLVQIFANLISNSIKFTTTGHIILRGWCENINSLHDEMSVSVDRRKPWAPMKTKQVQHRNHLQKSCKNANKMVLWFEVDDTGCGIDPSKWDSVFESFEQADPSTTRTHGGTGLGLCIVRNLVNKMGGEIKVVQKNGLGTLMRLYLILSTPDTVDQNIQPDFSKYGLVVMLSMYGSTARMITSKWLRKHGIATVEASDWNELTQIIRDLLETGSRDNSFDSQHNISDPLRAELSNIVEIKNPVFVIVVDIGVLDLTTNIWKEQLNYLDRFSNKAKFAWLLKHDTSNTVKTELRRKGHVMMVNKPLYKAKMIQILEAVIKNRKRGLCNDLRNRGNGSDESHDCLEIDPTQFDTCSSDDSSETSGEKQVDKSVKPSTLHSPVLKNYLIDATTSNDDSTSASMTQKNPEEEDWKDRLYSGIALDGKNQKSLEGIRILLAEDTPVLQRVATIMLEKMGATVTAVWDGQQAVDSLNYKSINAQAPTEEHKSFEEETANKVTTRETSLRNSSPYDLILMDCQMPKMDGYEATKAIRRAEIGTELHIPIVALTAHAMSSDEAKCLEVGMDAYLTKPIDRKLMVSTILSLTKPSAFQTSLSA

135.4 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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