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Carbohydrate Binding Module Family 91

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Revision as of 06:44, 15 January 2023 by Daichi Ito (talk | contribs)
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This page is currently under construction. This means that the Responsible Curator has deemed that the page's content is not quite up to CAZypedia's standards for full public consumption. All information should be considered to be under revision and may be subject to major changes.

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Ligand specificities

CBM91 bind oat spelt xylan with Ka value of 2.0×10-5 M-1, and can bind birchwood xylan. But it does not bind to cellulosic substrates, carboxymethyl-cellulose, ball-milled cellulose and lichnan. So, CBM91 can recognize and bind to insoluble xylan [1].

Structural Features

Content in this section should include, in paragraph form, a description of:

  • Fold: β-sandwich
  • Type: Type B


Family Firsts

First Identified
CBM91 from Paenibacillus xynaniclasticus strain TW1 [1].
First Structural Characterization
β-D-xylosidase, a family 43 glycoside hydrolase from Clostridium acetobutylicum ATCC 824 PDB ID 1Y7B.


  1. Ito D, Nakano E, Karita S, Umekawa M, Ratanakhanokchai K, and Tachaapaikoon C. (2022). Characterization of a GH Family 43 β-Xylosidase Having a Novel Carbohydrate-binding Module from Paenibacillus xylaniclasticus Strain TW1. J Appl Glycosci (1999). 2022;69(3):65-71. DOI:10.5458/jag.jag.JAG-2022_0001 | PubMed ID:36312872 [Ito2022]