2AAA

CALCIUM BINDING IN ALPHA-AMYLASES: AN X-RAY DIFFRACTION STUDY AT 2.1 ANGSTROMS RESOLUTION OF TWO ENZYMES FROM ASPERGILLUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.12 Å
  • R-Value Observed: 0.169

Literature

Macromolecules
Sequence Display for 2AAA

Classification: GLYCOSIDASE

Total Structure Weight: 53045.22

Macromolecule Entities
Molecule Chains Length Organism Details
ALPHA-AMYLASE A 484 Aspergillus niger EC#: 3.2.1.1 IUBMB
Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 1 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
CA
Query on CA

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

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.12 Å
  • R-Value Observed: 0.169
  • Space Group: C 2 2 21

Unit Cell:

Length (Å) Angle (°)
a = 81.10 α = 90.00
b = 98.30 β = 90.00
c = 138.00 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 1991-02-27
  • Released Date: 1993-07-15
  • Deposition author(s): Brady, L., Brzozowski, A.M., Derewenda, Z., Dodson, E.J., Dodson, G.G.

Revision History

  • Version 1_0: 1993-07-15

    Type: Initial release

  • Version 1_1: 2008-03-03

    Type: Version format compliance

  • Version 1_2: 2011-07-13

    Type: Version format compliance

  • Version 1_3: 2014-09-17

    Type: Other