CBM13

Summary
Family
Carbohydrate-Binding Module Family 13
CAZy
Activities
Modules of approx. 150 residues which always appear as a threefold internal repeat. The only apparent exception to this, xylanase II of Actinomadura sp. FC7 (GenBank U08894), is in fact not completely sequenced. These modules were first identified in several plant lectins such as ricin or agglutinin of Ricinus communis which bind galactose residues. The three-dimensional structure of a plant lectin has been determined and displays a pseudo-threefold symmetry in accord with the observed sequence threefold repeat. These modules have since been found in a number of other proteins of various functions including glycoside hydrolases and glycosyltransferases. While in the plant lectins this module binds mannose, binding to xylan has been demonstrated in the Streptomyces lividans xylanase A and arabinofuranosidase B. Binding to GalNAc has been shown for the corresponding module of GalNAc transferase 4. For the other proteins, the binding specificity of these modules has not been established. The pseudo three-fold symmetry of the CBM13 module has now been confirmed in the 3-D structure of the intact, two-domain, xylanase of Streptomyces olivaceoviridis.
Protein List
Displaying entries 76 - 100 of 374 in total
UniProt ID Protein Name GenBank Gene ID Enzyme Organism
A0A4V1A0A3 Ricin B-type lectin domain-containing protein
Q8N428 Polypeptide N-acetylgalactosaminyltransferase 16
  • 2.4.1.41
Q5KN45 Ricin B-type lectin domain-containing protein
A3P7F6 Ricin-type beta-trefoil lectin domain/galactose oxidase domain protein
A0A1A9J148 Ricin B-type lectin domain-containing protein
Q4WVZ3 Probable alpha-galactosidase A
  • 3.2.1.22
Q80W49 Beta/gamma crystallin domain-containing protein 3
Q9RJC9 Putative hydrolase
Q9K438 Putative bifunctional protein (Secreted sugar binding protein/sugar hydrolase)
G1XPM5 Ricin B-type lectin domain-containing protein
C9YSR9 Putative secreted protein
Q1D3S1 Chitinase, class I
  • 3.2.1.14
D5EXY8 Glycosyl hydrolase, family 43
Q08B33 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
E3VZN6 Putative B-type lectin protein
A0A4P6TV20 Ricin B-type lectin domain-containing protein
A0A1D9PVM2 Alpha-galactosidase
  • 3.2.1.22
Q9Y117 Polypeptide N-acetylgalactosaminyltransferase 3
  • 2.4.1.41
G1XSZ8 Ricin B-type lectin domain-containing protein
C9Z6S0 Putative hydrolase
A0A8B0EJF2 Ricin B-type lectin domain-containing protein
Q6P9A2 Polypeptide N-acetylgalactosaminyltransferase 18
  • 2.4.1.41
O61397 Probable N-acetylgalactosaminyltransferase 7
  • 2.4.1.-
M9PBK1 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q9GM01 Polypeptide N-acetylgalactosaminyltransferase 9
  • 2.4.1.41

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: August 19, 2024