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IPK2b

Gene
IPK2b
Protein
Inositol polyphosphate multikinase beta
Organism
Arabidopsis thaliana
Length
300 amino acids
Function
Inositol phosphate kinase with a broad substrate specificity. Phosphorylates inositol 1,4,5-trisphosphate (Ins(1,4,5)P3), inositol 1,4,5,6-tetrakisphosphate (Ins(1,4,5,6)P4), inositol 1,3,4,5-tetrakisphosphate (Ins(1,3,4,5)P4), inositol 1,3,4,6-tetrakisphosphate (Ins(1,3,4,6)P4) and inositol 1,2,3,4,6-pentakisphosphate (Ins(1,2,3,4,6)P5) but not inositol 1,4-bisphosphate (Ins(1,4)P2), inositol 1,3,4-trisphosphate (Ins(1,3,4)P3), inositol 1,2,6-trisphosphate (Ins(1,2,6)P3), inositol 3,4,5,6-tetrakisphosphate (Ins(3,4,5,6)P4), inositol 1,3,4,5,6-pentakisphosphate (Ins(1,3,4,5,6)P5), inositol 1,2,4,5,6-pentakisphosphate (Ins(1,2,4,5,6)P5) or inositol hexakisphosphate (InsP6). Involved in the auxin signaling pathway. Regulates axillary shoot branching and is required for phytate synthesis in seeds.
Similarity
Belongs to the inositol phosphokinase (IPK) family.
Mass
33.487 kDa
Sequence
MLKVPEHQVAGHIASDGKLGPLVDDQGRFFKPLQGDSRGEHEAKFYESFTSNMKVPDHIHRYFPVYHGTQLVEASDGSGKLPHLVLDDVVSGYANPSVMDVKIGSRTWYPDVSEEYFKKCIKKDRQTTTVSLGFRVSGFKIFDHQESSFWRAEKKLVLGYNADGARLALRKFVSSNSPADSNLTPNCAFASEVYGGCNGILAQLLELKDWFETQTLYHFNSCSILMIYENESILMQGGDDAPAPRAQVKLVDFAHVLDGNGVIDHNFLGGLCSFIKFIKDILQSVEKHDETDTSLLENGR