1HOE

CRYSTAL STRUCTURE DETERMINATION, REFINEMENT AND THE MOLECULAR MODEL OF THE ALPHA-AMYLASE INHIBITOR HOE-467A

• PDB DOI: https://doi.org/10.2210/pdb1HOE/pdb

• Classification: GLYCOSIDASE INHIBITOR
• Organism(s): Streptomyces tendae
• Mutation(s): No 


• Deposited: 1989-01-27 Released: 1989-04-19 
• Deposition Author(s): Pflugrath, J.W., Wiegand, G., Huber, R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.199 

Literature

Crystal structure determination, refinement and the molecular model of the alpha-amylase inhibitor Hoe-467A.

Pflugrath, J.W., Wiegand, G., Huber, R., Vertesy, L.

(1986) J Mol Biol 189: 383-386

• PubMed: 3489104 
• DOI: https://doi.org/10.1016/0022-2836(86)90520-6
• Primary Citation of Related Structures:  
  1HOE


• PubMed Abstract: 
  

  The crystal and molecular structure of the alpha-amylase inhibitor Hoe-467A has been determined and refined at high resolution. The polypeptide chain is folded in two triple-stranded sheets, which form a barrel. The topology of folding is as found in the immunoglobulin domains. The amino acid triplet Trp18-Arg19-Tyr20 has an exceptional conformation and position in the molecule and is possibly involved in inhibitory activity.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 7.97 kDa 
• Atom Count: 581 
• Modelled Residue Count: 74 
• Deposited Residue Count: 74 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ALPHA-AMYLASE INHIBITOR	A	74	Streptomyces tendae	Mutation(s): 0
UniProt
Find proteins for P01092 (Streptomyces tendae) Explore P01092  Go to UniProtKB:  P01092

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.199 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.6	α = 90
b = 40.6	β = 90
c = 26.8	γ = 90

Software Package:

Software Name	Purpose
EREF	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1989-04-19 
Deposition Author(s): Pflugrath, J.W., Wiegand, G., Huber, R.

Revision History  

• Version 1.0: 1989-04-19
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-11-06
  Changes: Data collection, Database references, Structure summary