Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 57849.16 
• Atom Count: 3281 
• Residue Count: 527 
• Unique protein chains: 1

1GCY

HIGH RESOLUTION CRYSTAL STRUCTURE OF MALTOTETRAOSE-FORMING EXO-AMYLASE

• DOI: 10.2210/pdb1GCY/pdb

• Classification: HYDROLASE
• Organism(s): Pseudomonas stutzeri
• Expression System: Escherichia coli


• Deposited: 2000-08-14 Released: 2000-08-30 
• Deposition Author(s): Mezaki, Y., Katsuya, Y., Kubota, M., Matsuura, Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.304 
• R-Value Work: 0.259 

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

• PubMed: 11272837 
• DOI: 10.1271/bbb.65.222


• 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 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. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
GLUCAN 1,4-ALPHA-MALTOTETRAHYDROLASE	A	527	Pseudomonas stutzeri	Mutation(s): 0  Gene Names: amyP EC: 3.2.1.60
Find proteins for P13507 (Pseudomonas stutzeri) Go to UniProtKB:  P13507

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CA	A	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.304 
• R-Value Work: 0.259 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 69.420	α = 90.00
b = 171.660	β = 90.00
c = 46.350	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	phasing
X-PLOR	refinement
X-PLOR	model building

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-14 
• Released Date: 2000-08-30 
• Deposition Author(s): Mezaki, Y., Katsuya, Y., Kubota, M., Matsuura, Y.

Revision History 

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