Phosphoglucan, water dikinase

Phosphoglucan, water dikinase
Identifiers
EC no.	2.7.9.5
CAS no.	912567-76-1
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

In enzymology, a phosphoglucan, water dikinase (EC 2.7.9.5) is an enzyme that catalyzes the chemical reaction

ATP + [phospho-alpha-glucan] + H₂O ${\displaystyle \rightleftharpoons }$ AMP + O-phospho-[phospho-alpha-glucan] + phosphate

The 3 substrates of this enzyme are ATP, phospho-alpha-glucan, and H₂O, whereas its 3 products are AMP, [[O-phospho-[phospho-alpha-glucan]]], and phosphate.

This enzyme belongs to the family of transferases, to be specific, those transferring phosphorus-containing groups (phosphotransferases) with paired acceptors (dikinases). The systematic name of this enzyme class is ATP:phospho-alpha-glucan, water phosphotransferase. Other names in common use include PWD, and OK1.

References

• Kotting O, Pusch K, Tiessen A, Geigenberger P, Steup M, Ritte G (2005). "Identification of a novel enzyme required for starch metabolism in Arabidopsis leaves. The phosphoglucan, water dikinase". Plant Physiol. 137 (1): 242–52. doi:10.1104/pp.104.055954. PMC   548855 . PMID   15618411.
• Ritte G, Heydenreich M, Mahlow S, Haebel S, Kotting O, Steup M (2006). "Phosphorylation of C6- and C3-positions of glucosyl residues in starch is catalysed by distinct dikinases". FEBS Lett. 580 (20): 4872–6. Bibcode:2006FEBSL.580.4872R. doi:10.1016/j.febslet.2006.07.085. PMID   16914145.