1QLD

Solution structure of type X CBM


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: AN AVERAGE STRUCTURE OF 21 LOWEST ENERGY STRUCTURES WAS CALCULATED, WHICH WAS FURTHER SUBJECTED TO RESTRAINED ENERGY MINIMIZATION. 

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This is version 1.3 of the entry. See complete history


Literature

Solution Structure of Cbm10 Cellulose Binding Module from Pseudomonas Xylanase A

Raghothama, S.Simpson, P.J.Szabo, L.Nagy, T.Gilbert, H.J.Williamson, M.P.

(2000) Biochemistry 39: 978

  • DOI: 10.1021/bi992163+
  • Primary Citation of Related Structures:  
    1E8R, 1QLD

  • PubMed Abstract: 
  • Plant cell wall hydrolases generally have a modular structure consisting of a catalytic domain linked to one or more noncatalytic carbohydrate-binding modules (CBMs), whose common function is to attach the enzyme to the polymeric substrate. Xylanase ...

    Plant cell wall hydrolases generally have a modular structure consisting of a catalytic domain linked to one or more noncatalytic carbohydrate-binding modules (CBMs), whose common function is to attach the enzyme to the polymeric substrate. Xylanase A from Pseudomonas fluorescens subsp. cellulosa (Pf Xyn10A) consists of a family 10 catalytic domain, an N-terminal family IIa cellulose-binding module, and an internal family 10 cellulose-binding module. The structure of the 45-residue family 10 CBM has been determined in solution using NMR. It consists of two antiparallel beta-sheets, one with two strands and one with three, with a short alpha-helix across one face of the three-stranded sheet. There is a high density of aromatic residues on one side of the protein, including three aromatic residues (Tyr8, Trp22, and Trp24), which are exposed and form a flat surface on one face, in a classical polysaccharide-binding arrangement. The fold is closely similar to that of the oligonucleotide/oligosaccharide-binding (OB) fold, but appears to have arisen by convergent evolution, because there is no sequence similarity, and the presumed binding sites are on different faces.


    Organizational Affiliation

    Department of Molecular Biology and Biotechnology, Krebs Institute, University of Sheffield, Sheffield S10 2TN, U.K.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
XYLANASEA50Pseudomonas fluorescensMutation(s): 0 
EC: 3.2.1.8
Find proteins for P14768 (Cellvibrio japonicus (strain Ueda107))
Explore P14768 
Go to UniProtKB:  P14768
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: AN AVERAGE STRUCTURE OF 21 LOWEST ENERGY STRUCTURES WAS CALCULATED, WHICH WAS FURTHER SUBJECTED TO RESTRAINED ENERGY MINIMIZATION. 
  • OLDERADO: 1QLD Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-02-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-10-24
    Changes: Data collection, Source and taxonomy