NCBI Accession #
NP_196354.1
NCBI GenBank Nucleotide #
NM_120819.2
NCBI Official Full Name
inositol polyphosphate kinase 2 alpha
NCBI Official Symbol
IPK2a
NCBI Official Synonym Symbols
ATIPK2A; IMPK; inositol multi-phosphate kinase; inositol polyphosphate kinase 2 alpha; INOSITOL POLYPHOSPHATE KINASE 2 ALPHA; T2I1.80; T2I1_80
NCBI Protein Information
inositol polyphosphate kinase 2 alpha
NCBI Summary
Encodes inositol polyphosphate kinase, which phosphorylates inositol 1,4,5-triphosphate and inositol 1,3,4,5-tetrakisphosphate to generate inositol 1,3,4,5,6-pentakisphosphate
UniProt Synonym Gene Names
IP3K; IPMK; AtIpk2-alpha; AtIpk2alpha
UniProt Protein Name
Inositol polyphosphate multikinase alpha
UniProt Synonym Protein Names
Inositol polyphosphate 6-/3-/5-kinase alpha; AtIpk2-alpha; AtIpk2alpha
UniProt Primary Accession #
Q9LY23
UniProt Secondary Accession #
Q8LBG7; Q9LF72
UniProt Related Accession #
Q9LY23
UniProt Comments
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). Regulates pollen and root development probably through the regulation of InsP3-mediated calcium accumulation.