1GCY

HIGH RESOLUTION CRYSTAL STRUCTURE OF MALTOTETRAOSE-FORMING EXO-AMYLASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.259 

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This is version 1.2 of the entry. See complete history


Literature

Crystallization and structural analysis of intact maltotetraose-forming exo-amylase from Pseudomonas stutzeri.

Mezaki, Y.Katsuya, Y.Kubota, M.Matsuura, Y.

(2001) Biosci Biotechnol Biochem 65: 222-225

  • DOI: 10.1271/bbb.65.222
  • Primary Citation of Related Structures:  
    1GCY

  • PubMed Abstract: 
  • The intact maltotetraose-forming exo-amylase from Pseudomonas stutzeri (G4-1), which has a raw starch binding domain, has been crystallized. The structure was identified (PDB entry 1GCY) by the molecular replacement method using the structure of its catalytic domain (G4-2) ...

    The intact maltotetraose-forming exo-amylase from Pseudomonas stutzeri (G4-1), which has a raw starch binding domain, has been crystallized. The structure was identified (PDB entry 1GCY) by the molecular replacement method using the structure of its catalytic domain (G4-2). The result showed that the raw starch binding domain is in a disordered state, the corresponding electron densities being almost invisible. Superposition of these two enzyme forms showed evidence for the possible location of the raw starch binding domain (SBD). This crystal is a novel case, in that it forms a regular lattice incorporating flexibly bound SBD in the channel of crystal packing of the catalytic domains.


    Related Citations: 
    • Crystal Structure of a Maltotetraose-forming Exo-amylase from Pseudomonas stutzeri
      Morishita, Y., Hasegawa, K., Matsuura, Y., Katsube, Y., Kubota, M., Sakai, S.
      (1997) J Mol Biol 267: 661
    • Crystal Structure of a Mutant Maltotetraose-forming Exo-amylase Cocrystallized with Maltopentaose
      Yoshioka, Y., Hasegawa, K., Matsuura, Y., Katsube, Y., Kubota, M.
      (1997) J Mol Biol 271: 619

    Organizational Affiliation

    Hyogo Prefectural Institute of Industrial Research, Kobe, Japan. mezaki@hyogo-kg.go.jp



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GLUCAN 1,4-ALPHA-MALTOTETRAHYDROLASEA527Pseudomonas stutzeriMutation(s): 0 
Gene Names: amyP
EC: 3.2.1.60
UniProt
Find proteins for P13507 (Pseudomonas stutzeri)
Explore P13507 
Go to UniProtKB:  P13507
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13507
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.259 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.42α = 90
b = 171.66β = 90
c = 46.35γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-08-30
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance