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 326 - 350 of 374 in total
UniProt ID Protein Name GenBank Gene ID Enzyme Organism
J9VHU3 Ricin B-type lectin domain-containing protein
V9KP77 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q8K1B9 Polypeptide N-acetylgalactosaminyltransferase 18
  • 2.4.1.41
Q8IA42 N-acetylgalactosaminyltransferase 4
  • 2.4.1.41
Q3UFE4 Ricin B-type lectin domain-containing protein (Fragment)
B3KY85 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q6WV20 Polypeptide N-acetylgalactosaminyltransferase 1
  • 2.4.1.41
Q6NS24 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q6P9S7 Polypeptide N-acetylgalactosaminyltransferase 10
  • 2.4.1.41
R9VWV6 Toxin 1
A0A8B0DRA7 Ricin-type beta-trefoil lectin domain protein
J9VF55 Ricin B-type lectin domain-containing protein
X2JEA3 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
G1XRH4 Ricin B-type lectin domain-containing protein
Q7Z202 Calcium up-regulated protein C
D2S0M1 Ricin B lectin
O54161 Extracellular exo-alpha-L-arabinofuranosidase
  • 3.2.1.55
Q9VUT6 Polypeptide N-acetylgalactosaminyltransferase 8
  • 2.4.1.41
A0A6C6YLY7 Ricin-type beta-trefoil lectin domain/galactose oxidase domain protein
S5MNV0 Putative lipoprotein envE
E6QY14 Ricin B-type lectin domain-containing protein
A0A8A7JIT5 Beta-xylanase
  • 3.2.1.8
Q08DM9 Polypeptide N-acetylgalactosaminyltransferase
  • 2.4.1.-
Q10471 Polypeptide N-acetylgalactosaminyltransferase 2
  • 2.4.1.41
Q9EWL6 Putative secreted 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