1L8F

Structure of 20K-endoglucanase from Melanocarpus albomyces at 1.8 A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.199 

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This is version 1.3 of the entry. See complete history


Literature

Structure of 20K endoglucanase from Melanocarpus albomyces at 1.8 A resolution.

Valjakka, J.Rouvinen, J.

(2003) Acta Crystallogr D Biol Crystallogr 59: 765-768

  • DOI: 10.1107/s0907444903002051
  • Primary Citation of Related Structures:  
    1L8F

  • PubMed Abstract: 
  • The crystal structure of the 20K endoglucanase from the thermophilic fungus Melanocarpus albomyces (Ma20k) has been determined. The structure was refined to 1.8 A resolution using data obtained at 120 K. Ma20k belongs to glycoside hydrolase family 45 ...

    The crystal structure of the 20K endoglucanase from the thermophilic fungus Melanocarpus albomyces (Ma20k) has been determined. The structure was refined to 1.8 A resolution using data obtained at 120 K. Ma20k belongs to glycoside hydrolase family 45. The three-dimensional structures of endoglucanase V (EGV) from the fungus Humicola insolens and of an endoglucanase from H. grisea var. thermoidea have previously been determined. The overall structure of Ma20k consists of a six-stranded beta-barrel domain similar to that found previously in family 45 endoglucanases. The flexible loop between strands V and VI, which was disordered in the uncomplexed structures of the Humicola endoglucanases but was ordered in complexed structures of EGV, is found to be well ordered in the native structure of Ma20k. The structure of Ma20k allows comparison between thermophilic and mesophilic proteins of family 45 and different principles for thermostability are discussed.


    Organizational Affiliation

    Department of Chemistry, University of Joensuu, Finland. jarkko.valjakka@joensuu.fi



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EndoglucanaseA207Melanocarpus albomycesMutation(s): 0 
Gene Names: cel45A
EC: 3.2.1.4
Find proteins for Q8J0K8 (Melanocarpus albomyces)
Explore Q8J0K8 
Go to UniProtKB:  Q8J0K8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.199 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.44α = 90
b = 47.44β = 90
c = 156.81γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-04-01
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Data collection