ΔR3/I5   Click here for help

GtoPdb Ligand ID: 11916

Comment: This peptide is a RXFP3/RXFP4 antagonist [2]. It behaves as a RXFP4 partial agonist (of cAMP activation) in CHO cells expressing human RXFP4. Structurally it is a chimeric peptide made of the A-chain of INSL5 and a C-terminally truncated B-chain of H3 relaxin [1].
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Selectivity at GPCRs
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
RXFP4 Hs Agonist Agonist 8.3 pKi - 2
pKi 8.3 [2]