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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_2_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 53000: Probable endo-beta-1,4-glucanase B

There are 4 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
Cellulase. [EC: 3.2.1.4]
Endohydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose, lichenin and cereal beta-D-glucans.
  • Will also hydrolyze 1,4-linkages in beta-D-glucans also containing 1,3-linkages.
 80 A0A076JT61 A0A076JT61 A0A0F4YPC6 A0A0F4YPC6 A0A0F8B0T2 A0A0F8B0T2 A0A0P4UJU2 A0A0P4UJU2 A0A1M3T9L2 A0A1M3T9L2
(70 more...)
Xyloglucan-specific exo-beta-1,4-glucanase. [EC: 3.2.1.155]
Hydrolysis of (1->4)-D-glucosidic linkages in xyloglucans so as to successively remove oligosaccharides from the chain end.
  • The enzyme removes XXXG heptasaccharides, XXLG/XLXG octasaccharides and XLLG nonasaccharides from the end of tamarind seed xyloglucan polymers in a processive manner.
  • Hydrolysis occurs at the unsubstituted D-glucopyranose residue in the main backbone.
  • It is not known whether the cleavage takes place at the reducing or non-reducing end of the polymer.
  • Very low activity with beta-D-glucans.
  • The enzyme from Chrysosporium lucknowense shifts to an endoglucanase mode when acting on linear substrates without bulky substituents on the polymeric backbone such as barley beta-glucan.
  • Formerly EC 3.2.1.160.
 2 A0A084GGV5 A0A084GGV5
Cellulose 1,4-beta-cellobiosidase (non-reducing end). [EC: 3.2.1.91]
Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and cellotetraose, releasing cellobiose from the non-reducing ends of the chains.
    		 2 A0A084GGV5 A0A084GGV5
    Endo-1,3(4)-beta-glucanase. [EC: 3.2.1.6]
    Endohydrolysis of (1->3)- or (1->4)-linkages in beta-D-glucans when the glucose residue whose reducing group is involved in the linkage to be hydrolyzed is itself substituted at C-3.
    • Substrates include laminarin, lichenin and cereal D-glucans.
    • Different from EC 3.2.1.39 and EC 3.2.1.52.
    		 2 A2R8E0 A2R8E0
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