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 1 - 25 of 374 in total
UniProt ID Protein Name GenBank Gene ID Enzyme Organism
A4Y738 Alpha-N-arabinofuranosidase
  • 3.2.1.55
E5D8G1 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q9RDQ1 Putative secreted protein
B3KT16 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q9L153 Putative secreted protein
Q9K474 Putative secreted glycosyl hydrolase
A0A0M5J3I3 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
A0A7D6FIC3 Hydrogenase expression protein
Q49A17 Polypeptide N-acetylgalactosaminyltransferase-like 6
  • 2.4.1.41
Q05BM8 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
A0A0K1IYI1 Glycoside hydrolase family 43
Q6IS24 Polypeptide N-acetylgalactosaminyltransferase 17
  • 2.4.1.41
Q97LI4 Endo-arabinase related enzyme (Family 43 glycosyl hydrolase domain and ricin B-like domain)
C5CYC7 Ricin B lectin
B1VQ95 Putative secreted hydrolase
A0A8B0EWU1 Ricin-type beta-trefoil lectin domain protein
Q8N4A0 Polypeptide N-acetylgalactosaminyltransferase 4
  • 2.4.1.41
Q925R7 Polypeptide N-acetylgalactosaminyltransferase 10
  • 2.4.1.41
Q8IXK2 Polypeptide N-acetylgalactosaminyltransferase 12
  • 2.4.1.41
A0A1S5W9E3 Mannan endo-1,4-beta-mannosidase
  • 3.2.1.78
Q7K755 Putative polypeptide N-acetylgalactosaminyltransferase 11
  • 2.4.1.41
Q6WV17 Polypeptide N-acetylgalactosaminyltransferase 5
  • 2.4.1.41
A0A0H2WB70 Lectin repeat domain protein
J9VEF7 Ricin B-type lectin domain-containing protein
A0A8A7JFF3 Ricin-type beta-trefoil lectin domain protein

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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