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CATH Superfamily 3.30.470.20

ATP-grasp fold, B domain

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
ATP-grasp fold, B domain
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 18628: Phosphoglucan, water dikinase, chloroplastic

There are 2 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Phosphoglucan, water dikinase. [EC: 2.7.9.5]
ATP + (phospho-alpha-glucan) + H(2)O = AMP + O-phospho-(phospho-alpha- glucan) + phosphate.
  • The enzyme phosphorylates granular starch that has previously been phosphorylated by EC 2.7.9.4; there is no activity with unphosphorylated glucans.
  • It transfers the beta-phosphate of ATP to the phosphoglucan, whereas the gamma-phosphate is transferred to water.
  • In contrast to EC 2.7.9.4, which phosphorylates the glucose groups in glucans predominantly on O-6, this enzyme phosphorylates glucose groups in phosphorylated starch predominantly on O-3.
  • The protein phosphorylates itself with the beta-phosphate of ATP, which is then transferred to the glucan.
 4 A0A178UG93 B9RXZ3 Q2QTC2 Q6ZY51
Alpha-glucan, water dikinase. [EC: 2.7.9.4]
ATP + alpha-glucan + H(2)O = AMP + phospho-alpha-glucan + phosphate.
  • ATP appears to be the only phosphate donor.
  • No activity could be detected using GTP, UTP, phosphoenolpyruvate or diphosphate.
  • The protein phosphorylates glucans exclusively at O-6 of glucosyl residues.
  • The protein phosphorylates itself with the beta-phosphate of ATP, which is then transferred to the glucan.
 2 A0A0B2R4L9 A0A0B2RYL4