1E8Q

Characterisation of the cellulose docking domain from Piromyces equi


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: 5 STRUCTURES SELECTED FROM THE 34 STRUCTURES WHICH HAD NO RESTRAINT VIOLATION 

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This is version 1.3 of the entry. See complete history


Literature

Characterization of a cellulosome dockerin domain from the anaerobic fungus Piromyces equi.

Raghothama, S.Eberhardt, R.Y.Simpson, P.Wigelsworth, D.White, P.Hazlewood, G.P.Nagy, T.Gilbert, H.J.Williamson, M.P.

(2001) Nat Struct Biol 8: 775-778

  • DOI: 10.1038/nsb0901-775
  • Primary Citation of Related Structures:  
    1E8Q, 1E8P

  • PubMed Abstract: 
  • The recycling of photosynthetically fixed carbon in plant cell walls is a key microbial process. In anaerobes, the degradation is carried out by a high molecular weight multifunctional complex termed the cellulosome. This consists of a number of independent enzyme components, each of which contains a conserved dockerin domain, which functions to bind the enzyme to a cohesin domain within the protein scaffoldin protein ...

    The recycling of photosynthetically fixed carbon in plant cell walls is a key microbial process. In anaerobes, the degradation is carried out by a high molecular weight multifunctional complex termed the cellulosome. This consists of a number of independent enzyme components, each of which contains a conserved dockerin domain, which functions to bind the enzyme to a cohesin domain within the protein scaffoldin protein. Here we describe the first three-dimensional structure of a fungal dockerin, the N-terminal dockerin of Cel45A from the anaerobic fungus Piromyces equi. The structure contains a novel fold of 42 residues. The ligand binding site consists of residues Trp 35, Tyr 8 and Asp 23, which are conserved in all fungal dockerins. The binding site is on the opposite side of the N- and C-termini of the molecule, implying that tandem dockerin domains, seen in the majority of anaerobic fungal plant cell wall degrading enzymes, could present multiple simultaneous binding sites and, therefore, permit tailoring of binding to catalytic demands.


    Organizational Affiliation

    Department of Molecular Biology and Biotechnology, Krebs Institute, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Endoglucanase 45AA46Piromyces sp. 'equiMutation(s): 0 
Gene Names: cel45A
EC: 3.2.1.4
UniProt
Find proteins for Q9P868 (Piromyces equi)
Explore Q9P868 
Go to UniProtKB:  Q9P868
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: 5 STRUCTURES SELECTED FROM THE 34 STRUCTURES WHICH HAD NO RESTRAINT VIOLATION 
  • OLDERADO: 1E8Q Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-09-07
    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: 2018-06-20
    Changes: Data collection, Database references, Source and taxonomy, Structure summary