2VQX

Precursor of Protealysin, Metalloproteinase from Serratia proteamaculans.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.821 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Protealysin Precursor: Insights Into Propeptide Function.

Demidyuk, I.V.Gromova, T.Y.Polyakov, K.M.Melik-Adamyan, W.R.Kuranova, I.P.Kostrov, S.V.

(2010) J.Biol.Chem. 285: 2003

  • DOI: 10.1074/jbc.M109.015396

  • PubMed Abstract: 
  • Protealysin (PLN) belongs to the M4 family of peptidases that are commonly known as thermolysin-like proteases (TLPs). All TLPs are synthesized as precursors containing N-terminal propeptides. According to the primary structure of the N-terminal prop ...

    Protealysin (PLN) belongs to the M4 family of peptidases that are commonly known as thermolysin-like proteases (TLPs). All TLPs are synthesized as precursors containing N-terminal propeptides. According to the primary structure of the N-terminal propeptides, the family is divided into two distinct groups. Representatives of the first group including thermolysin and all TLPs with known three-dimensional structures have long prosequences ( approximately 200 amino acids). Enzymes of the second group, whose prototype is protealysin, have short ( approximately 50 amino acids) propeptides. Here, we present the 1.8 A crystal structure of PLN precursor (proPLN), which is the first three-dimensional structure of a TLP precursor. Whereas the structure of the catalytic domain of proPLN is similar overall to previously reported structures of mature TLPs, it has specific features, including the absence of calcium-binding sites, and different structures of the N-terminal region and substrate-binding site. PLN propeptide forms a separate domain in the precursor and likely acts as an inhibitor that blocks the substrate-binding site and fixes the "open" conformation of the active site, which is unfavorable for catalysis. Furthermore the conserved PPL motif identified in our previous studies directly interacts with the S' subsites of the active center being a critical element of the propeptide-catalytic domain interface. Comparison of the primary structures of TLPs with short propeptides suggests that the specific features revealed in the proPLN crystal structure are typical for all protealysin-like enzymes. Thus, such proteins can be considered as a separate subfamily of TLPs.


    Organizational Affiliation

    Institute of Molecular Genetics, Russian Academy of Sciences, Kurchatov Sq. 2, Moscow 123182, Russia. duk@img.ras.ru




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
METALLOPROTEINASE
A
341Serratia proteamaculansMutation(s): 1 
Gene Names: mpr
Find proteins for Q5MJ80 (Serratia proteamaculans)
Go to UniProtKB:  Q5MJ80
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.821 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.170 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 70.760α = 90.00
b = 78.650β = 90.00
c = 59.280γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
BALBESphasing
XDSdata reduction
XDSdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-05-26
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance