9PAI

CLEAVED SUBSTRATE VARIANT OF PLASMINOGEN ACTIVATOR INHIBITOR-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Mechanisms contributing to the conformational and functional flexibility of plasminogen activator inhibitor-1.

Aertgeerts, K.De Bondt, H.L.De Ranter, C.J.Declerck, P.J.

(1995) Nat.Struct.Mol.Biol. 2: 891-897


  • PubMed Abstract: 
  • Plasminogen activator inhibitor-1 (PAI-1) is unique among the serine proteinase inhibitors (serpins) in that it can adopt at least three different conformations (active, substrate and latent). We report the X-ray structure of a cleaved substrate vari ...

    Plasminogen activator inhibitor-1 (PAI-1) is unique among the serine proteinase inhibitors (serpins) in that it can adopt at least three different conformations (active, substrate and latent). We report the X-ray structure of a cleaved substrate variant of human PAI-1, which has a new beta-strand s4A formed by insertion of the amino-terminal portion of the reactive-site loop into beta-sheet A subsequent to cleavage. This is in contrast to the previous suggestion that the non-inhibitory function of substrate-type serpins is mainly due to an inability of the reactive-site loop to adopt this conformation. Comparison with the structure of latent PAI-1 provides insights into the molecular determinants responsible for the transition of the stressed active conformation to the thermostable latent conformation.


    Organizational Affiliation

    Laboratory for Analytical Chemistry and Medicinal Physicochemistry, Faculty of Pharmaceutical Sciences, Katholieke Universiteit Leuven, Belgium.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PLASMINOGEN ACTIVATOR INHIBITOR-1) residues 19-364
A
346Homo sapiensMutation(s): 1 
Gene Names: SERPINE1 (PAI1, PLANH1)
Find proteins for P05121 (Homo sapiens)
Go to Gene View: SERPINE1
Go to UniProtKB:  P05121
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PLASMINOGEN ACTIVATOR INHIBITOR-1) residues 365-397
B
33Homo sapiensMutation(s): 0 
Gene Names: SERPINE1 (PAI1, PLANH1)
Find proteins for P05121 (Homo sapiens)
Go to Gene View: SERPINE1
Go to UniProtKB:  P05121
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.181 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 151.860α = 90.00
b = 47.520β = 113.95
c = 62.730γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
SAINTdata scaling
X-PLORphasing
SAINTdata reduction
FRAMBOdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-19
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description
  • Version 1.4: 2018-03-07
    Type: Data collection
  • Version 1.5: 2018-03-14
    Type: Database references