1TMQ

STRUCTURE OF TENEBRIO MOLITOR LARVAL ALPHA-AMYLASE IN COMPLEX WITH RAGI BIFUNCTIONAL INHIBITOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A novel strategy for inhibition of alpha-amylases: yellow meal worm alpha-amylase in complex with the Ragi bifunctional inhibitor at 2.5 A resolution.

Strobl, S.Maskos, K.Wiegand, G.Huber, R.Gomis-Ruth, F.X.Glockshuber, R.

(1998) Structure 6: 911-921


  • PubMed Abstract: 
  • alpha-Amylases catalyze the hydrolysis of alpha-D-(1,4)-glucan linkages in starch and related compounds. There is a wide range of industrial and medical applications for these enzymes and their inhibitors. The Ragi bifunctional alpha-amylase/trypsin ...

    alpha-Amylases catalyze the hydrolysis of alpha-D-(1,4)-glucan linkages in starch and related compounds. There is a wide range of industrial and medical applications for these enzymes and their inhibitors. The Ragi bifunctional alpha-amylase/trypsin inhibitor (RBI) is the prototype of the cereal inhibitor superfamily and is the only member of this family that inhibits both trypsin and alpha-amylases. The mode of inhibition of alpha-amylases by these cereal inhibitors has so far been unknown.


    Related Citations: 
    • The Alpha-Amylase from the Yellow Meal Worm: Complete Primary Structure, Crystallization and Preliminary X-Ray Analysis
      Strobl, S.,Gomis-Ruth, F.X.,Maskos, K.,Frank, G.,Huber, R.,Glockshuber, R.
      (1997) FEBS Lett. 409: 109


    Organizational Affiliation

    Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Hönggerberg, Zürich, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (ALPHA-AMYLASE)
A
471Tenebrio molitorMutation(s): 0 
EC: 3.2.1.1
Find proteins for P56634 (Tenebrio molitor)
Go to UniProtKB:  P56634
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (RAGI BIFUNCTIONAL INHIBITOR)
B
117Eleusine coracanaMutation(s): 0 
Find proteins for P01087 (Eleusine coracana)
Go to UniProtKB:  P01087
Small Molecules
Ligands 2 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
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-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: 2.5 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.191 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 79.160α = 90.00
b = 186.870β = 90.00
c = 111.540γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
CCP4data scaling
MOSFLMdata reduction
CCP4data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-02
    Type: Initial release
  • Version 1.1: 2008-04-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance