1DHK

STRUCTURE OF PORCINE PANCREATIC ALPHA-AMYLASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Substrate mimicry in the active center of a mammalian alpha-amylase: structural analysis of an enzyme-inhibitor complex.

Bompard-Gilles, C.Rousseau, P.Rouge, P.Payan, F.

(1996) Structure 4: 1441-1452


  • PubMed Abstract: 
  • alpha-Amylases catalyze the hydrolysis of glycosidic linkages in starch and other related polysaccharides. The alpha-amylase inhibitor (alpha-Al) from the bean Phaseolus vulgaris belongs to a family of plant defence proteins and is a potent inhibitor ...

    alpha-Amylases catalyze the hydrolysis of glycosidic linkages in starch and other related polysaccharides. The alpha-amylase inhibitor (alpha-Al) from the bean Phaseolus vulgaris belongs to a family of plant defence proteins and is a potent inhibitor of mammalian alpha-amylases. The structure of pig pancreatic alpha-amylase (PPA) in complex with both a carbohydrate inhibitor (acarbose) and a proteinaceous inhibitor (Tendamistat) is known, but the catalytic mechanism is poorly understood.


    Related Citations: 
    • Structure and Molecular Model Refinement of Pig Pancreatic Alpha-Amylase at 2.1 A Resolution
      Qian, M.,Haser, R.,Payan, F.
      (1993) J.Mol.Biol. 231: 785
    • The Active Center of a Mammalian Alpha-Amylase. Structure of the Complex of a Pancreatic Alpha-Amylase with a Carbohydrate Inhibitor Refined to 2.2-A Resolution
      Qian, M.,Haser, R.,Buisson, G.,Duee, E.,Payan, F.
      (1994) Biochemistry 33: 6284
    • Crystallization and Preliminary X-Ray Analysis of Pig Pancreatic Alpha-Amylase in Complex with a Bean Lectin-Like Inhibitor
      Gilles, C.,Rousseau, P.,Rouge, P.,Payan, F.
      (1996) Acta Crystallogr.,Sect.D 52: 581


    Organizational Affiliation

    AFMB-IBSM-CNRS, Marseille, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PORCINE PANCREATIC ALPHA-AMYLASE
A
496Sus scrofaMutation(s): 0 
Gene Names: AMY2
EC: 3.2.1.1
Find proteins for P00690 (Sus scrofa)
Go to UniProtKB:  P00690
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BEAN LECTIN-LIKE INHIBITOR
B
223Phaseolus vulgarisMutation(s): 0 
Gene Names: LLP (Alpha-AI1)
Find proteins for P02873 (Phaseolus vulgaris)
Go to UniProtKB:  P02873
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
A
L-PEPTIDE LINKINGC5 H7 N O3GLU
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.183 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 151.600α = 90.00
b = 79.400β = 91.54
c = 68.000γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
AMoREphasing
X-PLORrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-12-24
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance