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aceK2

Gene
aceK2
Protein
Isocitrate dehydrogenase kinase/phosphatase 2
Organism
Pseudoalteromonas haloplanktis (strain TAC 125)
Length
571 amino acids
Function
Bifunctional enzyme which can phosphorylate or dephosphorylate isocitrate dehydrogenase (IDH) on a specific serine residue. This is a regulatory mechanism which enables bacteria to bypass the Krebs cycle via the glyoxylate shunt in response to the source of carbon. When bacteria are grown on glucose, IDH is fully active and unphosphorylated, but when grown on acetate or ethanol, the activity of IDH declines drastically concomitant with its phosphorylation.
Similarity
Belongs to the AceK family.
Mass
66.954 kDa
Sequence
MQPRHIAELILTGFKKHYLLFQKTTAKAPLAFAKRDWQAINDISRLRISHYDDRVNETTATLRQQQTEQLDEQLWLEVKKLYQHFLCFHPQAELAETFYNSVFCRLYHRRYFHNDFIFVEATLKDAPAVPVEAEYRSYFPVVDGLKPTIKQIINHFDFKAPFVNLERDIRLLVKAFYKQAPDTHHKAWQMRFDILHTPFYRNKAAYIVGRVVSQSGVQPFIIAVLHHEDKGLYLDALLTKSSQMRVIFGFARAYFMVETHAPCALVRFLNQLMPNKTIAELYNAIGFHKQGKTEFYREFLNHLTHSNDEFTIAPGTPGMVMMVFTLPSFGYVFKVIKDKFGESKPFGRDTVLKRYQLVKKHDRVGRMADTIEYSNVVFPLARFDSNLLQQLHQTIGSSMVIEGDWLIIKHLYIERRMTPLNLFLENADDASAADAIEEYGQALKEMIAVNIFPGDMLLKNFGVSKHKRIIFYDYDEVQYLTDMNFRALPKAKTYDDYLMDEQSYSVAPQDVFPEQLCTFVMPNPIYKQFLMSTHPELIDVNFWKQAQQNIKNGQVSHIYPYPTAQRFIHHW