2FHW

Solution structure of human relaxin-3


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations,structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Solution structure and novel insights into the determinants of the receptor specificity of human relaxin-3.

Rosengren, K.J.Lin, F.Bathgate, R.A.Tregear, G.W.Daly, N.L.Wade, J.D.Craik, D.J.

(2006) J Biol Chem 281: 5845-5851

  • DOI: 10.1074/jbc.M511210200
  • Primary Citation of Related Structures:  
    2FHW

  • PubMed Abstract: 
  • Relaxin-3 is the most recently discovered member of the relaxin family of peptide hormones. In contrast to relaxin-1 and -2, whose main functions are associated with pregnancy, relaxin-3 is involved in neuropeptide signaling in the brain. Here, we re ...

    Relaxin-3 is the most recently discovered member of the relaxin family of peptide hormones. In contrast to relaxin-1 and -2, whose main functions are associated with pregnancy, relaxin-3 is involved in neuropeptide signaling in the brain. Here, we report the solution structure of human relaxin-3, the first structure of a relaxin family member to be solved by NMR methods. Overall, relaxin-3 adopts an insulin-like fold, but the structure differs crucially from the crystal structure of human relaxin-2 near the B-chain terminus. In particular, the B-chain C terminus folds back, allowing Trp(B27) to interact with the hydrophobic core. This interaction partly blocks the conserved RXXXRXXI motif identified as a determinant for the interaction with the relaxin receptor LGR7 and may account for the lower affinity of relaxin-3 relative to relaxin for this receptor. This structural feature is likely important for the activation of its endogenous receptor, GPCR135.


    Organizational Affiliation

    Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Relaxin 3 (Prorelaxin H3) (Insulin-like peptide INSL7) (Insulin-like peptide 7)B27N/AMutation(s): 0 
Find proteins for Q8WXF3 (Homo sapiens)
Explore Q8WXF3 
Go to UniProtKB:  Q8WXF3
NIH Common Fund Data Resources
PHAROS  Q8WXF3
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Relaxin 3 (Prorelaxin H3) (Insulin-like peptide INSL7) (Insulin-like peptide 7)A24N/AMutation(s): 0 
Find proteins for Q8WXF3 (Homo sapiens)
Explore Q8WXF3 
Go to UniProtKB:  Q8WXF3
NIH Common Fund Data Resources
PHAROS  Q8WXF3
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations,structures with the lowest energy 
  • OLDERADO: 2FHW Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance