3TJQ

N-domain of HtrA1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural and Functional Analysis of HtrA1 and Its Subdomains.

Eigenbrot, C.Ultsch, M.Lipari, M.T.Moran, P.Lin, S.J.Ganesan, R.Quan, C.Tom, J.Sandoval, W.van Lookeren Campagne, M.Kirchhofer, D.

(2012) Structure 20: 1040-1050

  • DOI: 10.1016/j.str.2012.03.021
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The homotrimeric human serine protease HtrA1 is homologous to bacterial HtrA proteases regarding the trypsin-like catalytic and PDZ domains but differs by the presence of an N-terminal domain with IGFBP and Kazal homology. The crystal structures and ...

    The homotrimeric human serine protease HtrA1 is homologous to bacterial HtrA proteases regarding the trypsin-like catalytic and PDZ domains but differs by the presence of an N-terminal domain with IGFBP and Kazal homology. The crystal structures and SAXS analysis presented herein reveal the rare tandem of IGFBP- and Kazal-like modules, a protease active site that adopts a competent conformation in the absence of substrate or inhibitor and a model for the intact protein in solution. Highly sensitive enzymatic assays and binding studies demonstrate that the N-terminal tandem has no apparent effect on protease activity, and in accordance with the structure-based predictions, neither the IGFBP- nor Kazal-like module retains the function of their prototype proteins. Our structures of the unliganded HtrA1 active site suggest two-state equilibrium and a "conformational selection" model, in which substrate binds to the active conformer.


    Organizational Affiliation

    Department of Structural Biology, Genentech, Inc., South San Francisco, CA 94080, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine protease HTRA1
A
140Homo sapiensMutation(s): 0 
Gene Names: HTRAHTRA1PRSS11
EC: 3.4.21
Find proteins for Q92743 (Homo sapiens)
Go to UniProtKB:  Q92743
NIH Common Fund Data Resources
PHAROS  Q92743
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PT
Query on PT

Download CCD File 
A
PLATINUM (II) ION
Pt
HRGDZIGMBDGFTC-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
SCN
Query on SCN

Download CCD File 
A
THIOCYANATE ION
C N S
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
 Ligand Interaction
CL
Query on CL

Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.222 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.085α = 90
b = 72.085β = 90
c = 41.289γ = 120
Software Package:
Software NamePurpose
BOSdata collection
PHENIXmodel building
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-16
    Type: Initial release
  • Version 1.1: 2012-06-13
    Changes: Database references
  • Version 1.2: 2012-06-27
    Changes: Database references