1Y3G

Crystal Structure of a Silanediol Protease Inhibitor Bound to Thermolysin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.155 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Analysis of Silanediols as Transition-State-Analogue Inhibitors of the Benchmark Metalloprotease Thermolysin(,).

Juers, D.H.Kim, J.Matthews, B.W.Sieburth, S.M.

(2005) Biochemistry 44: 16524-16528

  • DOI: 10.1021/bi051346v

  • PubMed Abstract: 
  • Dialkylsilanediols have been found to be an effective functional group for the design of active-site-directed protease inhibitors, including aspartic (HIV protease) and metallo (ACE and thermolysin) proteases. The use of silanediols is predicated on ...

    Dialkylsilanediols have been found to be an effective functional group for the design of active-site-directed protease inhibitors, including aspartic (HIV protease) and metallo (ACE and thermolysin) proteases. The use of silanediols is predicated on its resemblance to the hydrated carbonyl transition-state structure of amide hydrolysis. This concept has been tested by replacing the presumed tetrahedral carbon of a thermolysin substrate with a silanediol group, resulting in an inhibitor with an inhibition constant K(i) = 40 nM. The structure of the silanediol bound to the active site of thermolysin was found to have a conformation very similar to that of a corresponding phosphonamidate inhibitor (K(i) = 10 nM). In both cases, a single oxygen is within bonding distance to the active-site zinc ion, mimicking the presumed tetrahedral transition state. There are binding differences that appear to be related to the presence or absence of protons on the oxygens attached to the silicon or phosphorus. This is the first crystal structure of an organosilane bound to the active site of a protease.


    Organizational Affiliation

    Institute of Molecular Biology, Howard Hughes Medical Institute and Department of Physics, University of Oregon, Eugene, Oregon 97403, USA. juersdh@whitman.edu




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 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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E
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
LEU
Query on LEU

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E
LEUCINE
C6 H13 N O2
ROHFNLRQFUQHCH-YFKPBYRVSA-N
 Ligand Interaction
CA
Query on CA

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E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
AMM
Query on AMM

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E
(2S)-2-{[(AMINOMETHYL)(DIHYDROXY)SILYL]METHYL}-4-METHYLPENTANAL
C8 H19 N O3 Si
ZZKRIEGAOOCWBS-QMMMGPOBSA-N
 Ligand Interaction
3PL
Query on 3PL

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E
3-PHENYLPROPANAL
C9 H10 O
YGCZTXZTJXYWCO-UHFFFAOYSA-N
 Ligand Interaction
DMS
Query on DMS

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E
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.155 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 93.520α = 90.00
b = 93.520β = 90.00
c = 131.770γ = 120.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
TNTrefinement
TNTphasing
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-17
    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