2X0B

Crystal structure of human angiotensinogen complexed with renin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.33 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.309 
  • R-Value Observed: 0.310 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

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


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RENIN
A, C, E, G
383Homo sapiensMutation(s): 0 
EC: 3.4.23.15
UniProt & NIH Common Fund Data Resources
Find proteins for P00797 (Homo sapiens)
Explore P00797 
Go to UniProtKB:  P00797
PHAROS:  P00797
GTEx:  ENSG00000143839 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00797
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
ANGIOTENSINOGEN
B, D, F, H
452Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01019 (Homo sapiens)
Explore P01019 
Go to UniProtKB:  P01019
PHAROS:  P01019
GTEx:  ENSG00000135744 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01019
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.33 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.309 
  • R-Value Observed: 0.310 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 212.475α = 90
b = 212.475β = 90
c = 474.061γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

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
  • Version 1.3: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description