1XAS

CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Work: 0.210 
  • R-Value Observed: 0.210 

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This is version 1.4 of the entry. See complete history


Literature

Crystal structure, at 2.6-A resolution, of the Streptomyces lividans xylanase A, a member of the F family of beta-1,4-D-glycanases.

Derewenda, U.Swenson, L.Green, R.Wei, Y.Morosoli, R.Shareck, F.Kluepfel, D.Derewenda, Z.S.

(1994) J Biol Chem 269: 20811-20814

  • Primary Citation of Related Structures:  
    1XAS

  • PubMed Abstract: 
  • The crystal structure of the 32-kDa catalytic domain of the Streptomyces lividans xylanase A was solved by molecular isomorphous replacement methods and subsequently refined at 2.6-A resolution to a conventional crystallographic R factor of 0.21. This is the first successful structure determination of a member of the F family of endo-beta-1,4-D-glycanases ...

    The crystal structure of the 32-kDa catalytic domain of the Streptomyces lividans xylanase A was solved by molecular isomorphous replacement methods and subsequently refined at 2.6-A resolution to a conventional crystallographic R factor of 0.21. This is the first successful structure determination of a member of the F family of endo-beta-1,4-D-glycanases. Unlike the recently determined xylanases of the G family (Wakarchuk, W. W., Campbell, R. L., Sung, W. L., Davoodi, J., and Yaguchi, M. (1994) Protein Sci. 3, 467-475), where the catalytic domains have a unique beta-sheet structure, the 32-kDa domain of the S. lividans xylanase A is folded into a complete (alpha/beta)8 barrel, the first such fold observed among beta-1,4-D-glycanases. The active site is located at the carbonyl end of the beta barrel. The crystal structure supports the earlier assignment of Glu-128 and Glu-236 as the catalytic amino acids (Moreau, A., Roberge, M., Manin, C., Shareck, F., Kluepfel, D., and Morosoli, R. (1994) Biochem. J., in press).


    Organizational Affiliation

    Department of Biochemistry, University of Alberta, Edmonton, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
1,4-BETA-D-XYLAN XYLANOHYDROLASEA299Streptomyces lividansMutation(s): 0 
Gene Names: xlnA
EC: 3.2.1.8
UniProt
Find proteins for P26514 (Streptomyces lividans)
Explore P26514 
Go to UniProtKB:  P26514
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Work: 0.210 
  • R-Value Observed: 0.210 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.52α = 90
b = 46.51β = 90
c = 85.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-05-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-17
    Changes: Data collection, Other, Refinement description
  • Version 1.4: 2019-08-14
    Changes: Data collection, Refinement description