6I3F

Crystal structure of the complex of human angiotensinogen and renin at 2.55 Angstrom

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Homo sapiens
  • Mutation(s): Yes 

  • Deposited: 2018-11-06 Released: 2018-12-26 
  • Deposition Author(s): Yan, Y., Read, R.J.
  • Funding Organization(s): Wellcome Trust, British Heart Foundation

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Structural basis for the specificity of renin-mediated angiotensinogen cleavage.

Yan, Y.Zhou, A.Carrell, R.W.Read, R.J.

(2019) J Biol Chem 294: 2353-2364

  • DOI: https://doi.org/10.1074/jbc.RA118.006608
  • Primary Citation of Related Structures:  
    5M3X, 5M3Y, 6I3F, 6I3I

  • PubMed Abstract: 

    The renin-angiotensin cascade is a hormone system that regulates blood pressure and fluid balance. Renin-mediated cleavage of the angiotensin I peptide from the N terminus of angiotensinogen (AGT) is the rate-limiting step of this cascade; however, the detailed molecular mechanism underlying this step is unclear. Here, we solved the crystal structures of glycosylated human AGT (2.30 Å resolution), its encounter complex with renin (2.55 Å), AGT cleaved in its reactive center loop (RCL; 2.97 Å), and spent AGT from which the N-terminal angiotensin peptide was removed (2.63 Å). These structures revealed that AGT undergoes profound conformational changes and binds renin through a tail-into-mouth allosteric mechanism that inserts the N terminus into a pocket equivalent to a hormone-binding site on other serpins. These changes fully extended the N-terminal tail, with the scissile bond for angiotensin release docked in renin's active site. Insertion of the N terminus into this pocket accompanied a complete unwinding of helix H of AGT, which, in turn, formed key interactions with renin in the complementary binding interface. Mutagenesis and kinetic analyses confirmed that renin-mediated production of angiotensin I is controlled by interactions of amino acid residues and glycan components outside renin's active-site cleft. Our findings indicate that AGT adapts unique serpin features for hormone delivery and binds renin through concerted movements in the N-terminal tail and in its main body to modulate angiotensin release. These insights provide a structural basis for the development of agents that attenuate angiotensin release by targeting AGT's hormone binding pocket.


  • Organizational Affiliation

    From the Department of Haematology, University of Cambridge, Cambridge Institute for Medical Research, Wellcome Trust/MRC Building, Hills Road, Cambridge CB2 0XY, United Kingdom and.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Angiotensinogen458Homo sapiensMutation(s): 5 
Gene Names: AGTSERPINA8
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
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P01019-1
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Renin340Homo sapiensMutation(s): 1 
Gene Names: REN
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
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P00797-1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
5N-Glycosylation
Glycosylation Resources
GlyTouCan:  G10133VD
GlyCosmos:  G10133VD
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
D
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
H [auth B]
I [auth B]
J [auth B]
E [auth A],
F [auth A],
H [auth B],
I [auth B],
J [auth B],
K [auth B],
L [auth B],
M [auth B],
N [auth B],
O [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
G [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 124.119α = 90
b = 124.119β = 90
c = 260.911γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom082961/Z/07/Z
British Heart FoundationUnited KingdomPG/12/41/29679

Revision History  (Full details and data files)

  • Version 1.0: 2018-12-26
    Type: Initial release
  • Version 1.1: 2019-01-02
    Changes: Data collection, Database references
  • Version 1.2: 2019-02-27
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2024-01-24
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary