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

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Relaxin 3 (Prorelaxin H3) (Insulin-like peptide INSL7) (Insulin-like peptide 7)
B
27Homo sapiensMutation(s): 0 
Gene Names: RLN3 (INSL7, RXN3, ZINS4)
Find proteins for Q8WXF3 (Homo sapiens)
Go to Gene View: RLN3
Go to UniProtKB:  Q8WXF3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Relaxin 3 (Prorelaxin H3) (Insulin-like peptide INSL7) (Insulin-like peptide 7)
A
24Homo sapiensMutation(s): 0 
Gene Names: RLN3 (INSL7, RXN3, ZINS4)
Find proteins for Q8WXF3 (Homo sapiens)
Go to Gene View: RLN3
Go to UniProtKB:  Q8WXF3
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 or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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