alpha-amylase inhibitor Parvulustat (Z-2685) from Streptomyces parvulus

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


The high resolution NMR structure of parvulustat (Z-2685) from Streptomyces parvulus FH-1641: comparison with tendamistat from Streptomyces tendae 4158

Rehm, S.Han, S.Hassani, I.Sokocevic, A.Jonker, H.R.A.Engels, J.W.Schwalbe, H.

(2009) Chembiochem 10: 119-127

  • DOI: https://doi.org/10.1002/cbic.200800547
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The protein parvulustat (Z-2685) from Streptomyces parvulus comprises 78 amino acids and functions as a highly efficient alpha-amylase inhibitor. Parvulustat shares 29.6 % overall amino acid sequence identity to the well-known alpha-amylase inhibitor tendamistat. Among the conserved residues are the two disulfide bridges (C9-C25, C43-C70) and the active-site motif (W16, R17, Y18). Here, we report the high-resolution NMR structure of parvulustat based on NOEs, J couplings, chemical shifts and hydrogen-exchange data. In addition, we studied the dynamical properties of parvulustat by heteronuclear relaxation measurements. We compare the structure of parvulustat with the structure of tendamistat in terms of secondary structure elements, charges and hydrophobicity. The overall structural composition is very similar, but there are distinct differences including the active-site region. These structural and dynamical differences indicate that for parvulustat an induced-fit mechanism for binding to alpha-amylase might take place, since the structure of tendamistat does not change upon binding to alpha-amylase.

  • Organizational Affiliation

    Institute of Organic Chemistry and Chemical Biology, Center for Biomolecular Magnetic Resonance, Johann-Wolfgang-Goethe University, Max-von-Laue-Strasse 7, Frankfurt am Main, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Alpha-amylase inhibitor Z-268578Streptomyces parvulusMutation(s): 0 
Find proteins for P07512 (Streptomyces rochei)
Explore P07512 
Go to UniProtKB:  P07512
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07512
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-02-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2022-03-16
    Changes: Data collection, Database references, Derived calculations