3CPU

SUBSITE MAPPING OF THE ACTIVE SITE OF HUMAN PANCREATIC ALPHA-AMYLASE USING SUBSTRATES, THE PHARMACOLOGICAL INHIBITOR ACARBOSE, AND AN ACTIVE SITE VARIANT

Structural Biology Knowledgebase: 3CPU SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.0 Å
  • R-Value Observed: 0.179

wwPDB Validation Full Report


Literature

Macromolecules
Sequence Display for 3CPU

Classification: HYDROLASE

Total Structure Weight: 56348.73

Macromolecule Entities
Molecule Chains Length Organism Details
ALPHA-AMYLASE A 496 Homo sapiens EC#: 3.2.1.1 IUBMB
Mutation: Q1X, E300N
Details: A PART OF ACARBOSE INHIBITOR, DISACCHARIDE GLC(499)-GLC(500) CHAIN B, OBSERVED AT ACTIVE SITE
Gene Name(s): AMY2A Gene View

Small Molecules
Ligands 3 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
GLC
Query on GLC

A ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
Ligand Explorer
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
CA
Query on CA

A CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Ligand Explorer
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
CL
Query on CL

A CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Ligand Explorer
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
Modified Residues 1 Unique
ID Chains Type Formula 2D Diagram Parent
PCA
Query on PCA
A L-PEPTIDE LINKING C5 H7 N O3 GLU

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.0 Å
  • R-Value Observed: 0.179
  • Space Group: P 21 21 21

Unit Cell:

Length (Å) Angle (°)
a = 52.91 α = 90.00
b = 75.39 β = 90.00
c = 136.12 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 1999-06-08
  • Released Date: 2001-06-30
  • Deposition author(s): Brayer, G.D., Sidhu, G., Maurus, R., Rydberg, E.H., Braun, C., Wang, Y., Nguyen, N.T., Overall, C.M., Withers, S.G.

Revision History

  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4