1Z9G

Crystal Structure Analysis of Thermolysin Complexed with the Inhibitor (R)-retro-thiorphan


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Thiorphan and retro-thiorphan display equivalent interactions when bound to crystalline thermolysin

Roderick, S.L.Fournie-Zaluski, M.C.Roques, B.P.Matthews, B.W.

(1989) Biochemistry 28: 1493-1497

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The three-dimensional structures of (S)-thiorphan and (R)-retro-thiorphan bound to thermolysin have been determined crystallographically and refined to residuals of 0.183 and 0.187 at 1.7-A resolution. Thiorphan [N-[(S)-2-(mercaptomethyl)-1-oxo-3-phe ...

    The three-dimensional structures of (S)-thiorphan and (R)-retro-thiorphan bound to thermolysin have been determined crystallographically and refined to residuals of 0.183 and 0.187 at 1.7-A resolution. Thiorphan [N-[(S)-2-(mercaptomethyl)-1-oxo-3-phenylpropyl]glycine] [HSCH2CH(CH2C6H5)CONHC-H2COOH] and retro-thiorphan [[[(R)-1-(mercaptomethyl)-2-phenylethyl] amino]-3-oxopropanoic acid] [HSCH2CH(CH2C6H5)NHCOCH2COOH] are isomeric thiol-containing inhibitors of endopeptidase EC 24-11 (also called "enkephalinase"). The mode of binding of thiorphan to thermolysin is similar to that of (2-benzyl-3-mercaptopropanoyl)-L-alanylglycinamide [Monzingo, A.F., & Matthews, B.W. (1982) Biochemistry 21, 3390-3394] with the inhibitor sulfur atom coordinated to the active site zinc and the peptide portion forming substrate-like interactions with the enzyme. The isomeric inhibitor retro-thiorphan, which differs from thiorphan by the inversion of an amide bond, utilizes very similar interactions with enzyme. Despite the inversion of the -CO-NH- linkage the carbonyl oxygen and amide nitrogen display very similar hydrogen bonding, as anticipated by B.P. Roques et al. [(1983) Proc. Natl. Acad. Sci. U.S.A. 80, 3178-3182]. These results explain why thermolysin and possibly other zinc endopeptidases such as endopeptidase EC 24-11 fail to discriminate between these retro-inverso inhibitors.


    Organizational Affiliation

    Institute of Molecular Biology, University of Oregon, Eugene 97403.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thermolysin
E
316Bacillus thermoproteolyticusMutation(s): 0 
Gene Names: npr
EC: 3.4.24.27
Find proteins for P00800 (Bacillus thermoproteolyticus)
Go to UniProtKB:  P00800
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
E
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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Download CCD File 
E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
RRT
Query on RRT

Download SDF File 
Download CCD File 
E
(R)-RETRO-THIORPHAN
3-{[(1R)-1-BENZYL-2-SULFANYLETHYL]AMINO}-3-OXOPROPANOIC ACID
C12 H15 N O3 S
REPVVNYZORKKPQ-SNVBAGLBSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
RRTKi: 2300 nM (99) BINDINGDB
RRTKi: 2300 nM BINDINGMOAD
RRTKi: 2300 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Work: 0.187 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 94.000α = 90.00
b = 94.000β = 90.00
c = 132.000γ = 120.00
Software Package:
Software NamePurpose
OSCTSTdata reduction
CCP4data scaling
TNTrefinement
TNTphasing
OSCTSTdata collection
ROTAVATAdata scaling
ROTAVATAdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-04-19
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description