Crystal structure of alkaline mannanase from Bacillus sp. strain JAMB-602: catalytic domain and its Carbohydrate Binding Module

Experimental Data Snapshot

  • Resolution: 1.65 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.178 

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Crystallization and preliminary X-ray study of alkaline mannanase from an alkaliphilic Bacillus isolate.

Akita, M.Takeda, N.Hirasawa, K.Sakai, H.Kawamoto, M.Yamamoto, M.Grant, W.D.Hatada, Y.Ito, S.Horikoshi, K.

(2004) Acta Crystallogr D Biol Crystallogr 60: 1490-1492

  • DOI: https://doi.org/10.1107/S0907444904014313
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    An alkaline mannanase (EC from the alkaliphilic Bacillus sp. strain JAMB-602 was cloned and sequenced. The deduced amino-acid sequence of the enzyme suggested that the enzyme consists of a catalytic and unknown additional domains. The recombinant enzyme expressed by B. subtilis was crystallized using the hanging-drop vapour-diffusion method at 277 K. X-ray diffraction data were collected to 1.65 A. The crystal belongs to space group P2(1)2(1)2(1), with unit-cell parameters a = 70.7, b = 79.5, c = 80.4 A. The asymmetric unit contains one protein molecule, with a corresponding VM of 2.26 A3 Da(-1) and a solvent content of 45.6%. Molecular replacement for initial phasing was carried out using the three-dimensional structure of a mannanase from Thermomonospora fusca as a search model, which corresponds to the catalytic domain of the alkaline mannanase. It gave sufficient phases to build the unknown domain.

  • Organizational Affiliation

    Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima, Yokosuka 237-0061. akitam@jamstec.go.jp

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
endo-beta-1,4-Mannanase464Bacillus sp. JAMB-602Mutation(s): 0 
Find proteins for Q4W8M3 (Bacillus sp. JAMB-602)
Explore Q4W8M3 
Go to UniProtKB:  Q4W8M3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4W8M3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.65 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.682α = 90
b = 79.48β = 90
c = 80.418γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-06-15
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.3: 2023-10-25
    Changes: Data collection, Database references, Derived calculations, Refinement description