Crystal structure of mouse angiotensinogen in the oxidised form

Experimental Data Snapshot

  • Resolution: 2.95 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


A Redox Switch in Angiotensinogen Modulates Angiotensin Release.

Zhou, A.Carrell, R.W.Murphy, M.P.Wei, Z.Yan, Y.Stanley, P.L.Stein, P.E.Pipkin, F.B.Read, R.J.

(2010) Nature 468: 108

  • DOI: https://doi.org/10.1038/nature09505
  • Primary Citation of Related Structures:  
    2WXW, 2WXX, 2WXY, 2WXZ, 2WY0, 2WY1, 2X0B

  • PubMed Abstract: 

    Blood pressure is critically controlled by angiotensins, which are vasopressor peptides specifically released by the enzyme renin from the tail of angiotensinogen-a non-inhibitory member of the serpin family of protease inhibitors. Although angiotensinogen has long been regarded as a passive substrate, the crystal structures solved here to 2.1 Å resolution show that the angiotensin cleavage site is inaccessibly buried in its amino-terminal tail. The conformational rearrangement that makes this site accessible for proteolysis is revealed in our 4.4 Å structure of the complex of human angiotensinogen with renin. The co-ordinated changes involved are seen to be critically linked by a conserved but labile disulphide bridge. Here we show that the reduced unbridged form of angiotensinogen is present in the circulation in a near 40:60 ratio with the oxidized sulphydryl-bridged form, which preferentially interacts with receptor-bound renin. We propose that this redox-responsive transition of angiotensinogen to a form that will more effectively release angiotensin at a cellular level contributes to the modulation of blood pressure. Specifically, we demonstrate the oxidative switch of angiotensinogen to its more active sulphydryl-bridged form in the maternal circulation in pre-eclampsia-the hypertensive crisis of pregnancy that threatens the health and survival of both mother and child.

  • Organizational Affiliation

    Department of Haematology, Cambridge Institute for Medical Research, University of Cambridge, Hills Road, Cambridge CB2 0XY, UK. awz20@cam.ac.uk

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
453Mus musculusMutation(s): 0 
Gene Names: AgtSerpina8
Find proteins for P11859 (Mus musculus)
Explore P11859 
Go to UniProtKB:  P11859
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11859
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.95 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.367α = 90
b = 99.416β = 90
c = 425.764γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-10-20
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance