4DCB

Y. pestis Plasminogen Activator Pla in Complex with Human Plasminogen Activation Loop Peptide ALP11


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.033 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for activation of an integral membrane protease by lipopolysaccharide.

Eren, E.van den Berg, B.

(2012) J.Biol.Chem. 287: 23971-23976

  • DOI: 10.1074/jbc.M112.376418

  • PubMed Abstract: 
  • Omptins constitute a unique family of outer membrane proteases that are widespread in Enterobacteriaceae. The plasminogen activator (Pla) of Yersinia pestis is an omptin family member that is very important for development of both bubonic and pneumon ...

    Omptins constitute a unique family of outer membrane proteases that are widespread in Enterobacteriaceae. The plasminogen activator (Pla) of Yersinia pestis is an omptin family member that is very important for development of both bubonic and pneumonic plague. The physiological function of Pla is to cleave (activate) human plasminogen to form the plasma protease plasmin. Uniquely, lipopolysaccharide (LPS) is essential for the catalytic activity of all omptins, including Pla. Why omptins require LPS for enzymatic activity is unknown. Here, we report the co-crystal structure of LPS-free Pla in complex with the activation loop peptide of human plasminogen, its natural substrate. The structure shows that in the absence of LPS, the peptide substrate binds deep within the active site groove and displaces the nucleophilic water molecule, providing an explanation for the dependence of omptins on LPS for enzymatic activity.


    Organizational Affiliation

    Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Coagulase/fibrinolysin
A
297Yersinia pestisMutation(s): 1 
Gene Names: pla
EC: 3.4.23.48
Find proteins for P17811 (Yersinia pestis)
Go to UniProtKB:  P17811
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Plasminogen
F
11Homo sapiensMutation(s): 0 
Gene Names: PLG
EC: 3.4.21.7
Find proteins for P00747 (Homo sapiens)
Go to Gene View: PLG
Go to UniProtKB:  P00747
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
C8E
Query on C8E

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Download CCD File 
A
(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE
C16 H34 O5
FEOZZFHAVXYAMB-UHFFFAOYSA-N
 Ligand Interaction
MRD
Query on MRD

Download SDF File 
Download CCD File 
A
(4R)-2-METHYLPENTANE-2,4-DIOL
C6 H14 O2
SVTBMSDMJJWYQN-RXMQYKEDSA-N
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.033 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.180 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 52.377α = 90.00
b = 63.105β = 90.00
c = 201.225γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
PHASERphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-06
    Type: Initial release
  • Version 1.1: 2012-07-25
    Type: Database references