2TAA

STRUCTURE AND POSSIBLE CATALYTIC RESIDUES OF TAKA-AMYLASE A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and possible catalytic residues of Taka-amylase A

Matsuura, Y.Kusunoki, M.Harada, W.Kakudo, M.

(1984) J Biochem 95: 697-702

  • DOI: 10.1093/oxfordjournals.jbchem.a134659
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • A complete molecular model of Taka-amylase A consisting of 478 amino acid residues was built with the aid of amino acid sequence data. Some typical structural features of the molecule are described. A model fitting of an amylose chain in the catalytic site of the enzyme showed a possible productive binding mode between substrate and enzyme ...

    A complete molecular model of Taka-amylase A consisting of 478 amino acid residues was built with the aid of amino acid sequence data. Some typical structural features of the molecule are described. A model fitting of an amylose chain in the catalytic site of the enzyme showed a possible productive binding mode between substrate and enzyme. On the basis of the difference Fourier analysis and the model fitting study, glutamic acid (Glu230) and aspartic acid (Asp297), which are located at the bottom of the cleft, were concluded to be the catalytic residues, serving as the general acid and base, respectively.


    Related Citations: 
    • Molecular Structure of Taka-Amylase A. I. Backbone Chain Folding at 3 Angstroms Resolution
      Matsuura, Y., Kusunoki, M., Harada, W., Tanaka, N., Iga, Y., Yasuoka, N., Toda, H., Narita, K., Kakudo, M.
      (1980) J Biochem 87: 1555
    • Low Resolution Crystal Structures of Taka-Amylase a and its Complexes with Inhibitors
      Matsuura, Y., Kusunoki, M., Date, W., Harada, S., Bando, S., Tanaka, N., Kakudo, M.
      (1979) J Biochem 86: 1773

    Organizational Affiliation

    Department of Biochemistry, Michigan State University, East Lansing, Michigan 48824, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TAKA-AMYLASE AA, B, C478Aspergillus oryzaeMutation(s): 0 
EC: 3.2.1.1
Find proteins for P0C1B3 (Aspergillus oryzae (strain ATCC 42149 / RIB 40))
Explore P0C1B3 
Go to UniProtKB:  P0C1B3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.9α = 90
b = 133.3β = 102.7
c = 94.3γ = 90

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1982-10-21
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance