Phosphoglucan, water dikinase

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

ATP + [phospho-alpha-glucan] + H₂O 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, specifically those transferring phosphorus-containing groups (phosphotransferases) with paired acceptors. The systematic name of this enzyme class is ATP:phospho-alpha-glucan, water phosphotransferase. Other names in common use include PWD, and OK1.

[edit] References

• IUBMB entry for 2.7.9.5
• BRENDA references for 2.7.9.5 (Recommended.)
• PubMed references for 2.7.9.5
• PubMed Central references for 2.7.9.5
• Google Scholar references for 2.7.9.5
• 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: 242–52. doi:10.1104/pp.104.055954. 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: 4872–6. doi:10.1016/j.febslet.2006.07.085. PMID 16914145. 

[edit] External links

The CAS registry number for this enzyme class is 912567-76-1.

• IUBMB entry for 2.7.9.5

• KEGG entry for 2.7.9.5

• BRENDA entry for 2.7.9.5

• NiceZyme view of 2.7.9.5

• EC2PDB: PDB structures for 2.7.9.5

• PRIAM entry for 2.7.9.5

• PUMA2 entry for 2.7.9.5

• IntEnz: Integrated Enzyme entry for 2.7.9.5

• MetaCyc entry for 2.7.9.5

• Atomic-resolution structures of enzymes belonging to this class