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CATH Superfamily 3.20.20.80

Glycosidases

The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
Glycosidases
".

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 302: Galactolipid galactosyltransferase SFR2, chloropla...

There are 1 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
Galactolipid galactosyltransferase. [EC: 2.4.1.184]
2 a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol = a 1,2-diacyl-3- O-(beta-D-galactosyl-(1->6)-beta-D-galactosyl)-sn-glycerol + a 1,2- diacyl-sn-glycerol.
  • The enzyme converts monogalactosyldiacylglycerol to digalactosyldiacylglycerol, trigalactosyldiacylglycerol and tetragalactosyldiacylglycerol.
  • All residues are connected by beta linkages.
  • The activity is localized to chloroplast envelope membranes, but it does not contribute to net galactolipid synthesis in plants, which is performed by EC 2.4.1.46 and EC 2.4.1.241.
  • Note that the beta,beta-digalactosyldiacylglycerol formed by this enzyme is different from the more common alpha,beta- digalactosyldiacylglycerol formed by EC 2.4.1.241.
  • The enzyme provides an important mechanism for the stabilization of the chloroplast membranes during freezing and drought stress.
 4 A0A178VES5 A0A178VES5 Q93Y07 Q93Y07
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