1BLI

BACILLUS LICHENIFORMIS ALPHA-AMYLASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.154 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Activation of Bacillus licheniformis alpha-amylase through a disorder-->order transition of the substrate-binding site mediated by a calcium-sodium-calcium metal triad.

Machius, M.Declerck, N.Huber, R.Wiegand, G.

(1998) Structure 6: 281-292

  • Also Cited By: 1OB0

  • PubMed Abstract: 
  • The structural basis as to how metals regulate the functional state of a protein by altering or stabilizing its conformation has been characterized in relatively few cases because the metal-free form of the protein is often partially disordered and u ...

    The structural basis as to how metals regulate the functional state of a protein by altering or stabilizing its conformation has been characterized in relatively few cases because the metal-free form of the protein is often partially disordered and unsuitable for crystallographic analysis. This is not the case, however, for Bacillus licheniformis alpha-amylase (BLA) for which the structure of the metal-free form is available. BLA is a hyperthermostable enzyme which is widely used in biotechnology, for example in the breakdown of starch or as a component of detergents. The determination of the structure of BLA in the metal-containing form, together with comparisons to the apo enzyme, will help us to understand the way in which metal ions can regulate enzyme activity.


    Related Citations: 
    • Crystal Structure of Thermostable Alpha-Amylase from Bacillus Licheniformis Refined at 1.7 A Resolution
      Hwang, K.Y.,Song, H.K.,Chang, C.,Lee, J.,Lee, S.Y.,Kim, K.K.,Choe, S.,Sweet, R.M.,Suh, S.W.
      (1997) Mol.Cells 7: 251
    • Crystal Structure of Calcium-Depleted Bacillus Licheniformis Alpha-Amylase at 2.2 A Resolution
      Machius, M.,Wiegand, G.,Huber, R.
      (1995) J.Mol.Biol. 246: 545


    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Planegg-Martinsried, Germany. machius@chop.swmed.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALPHA-AMYLASE
A
483Bacillus licheniformisGene Names: amyS (amyL)
EC: 3.2.1.1
Find proteins for P06278 (Bacillus licheniformis)
Go to UniProtKB:  P06278
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.154 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 91.300α = 90.00
b = 91.300β = 90.00
c = 137.700γ = 120.00
Software Package:
Software NamePurpose
X-PLORmodel building
DENZOdata reduction
SCALEPACKdata scaling
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-23
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance