B7-33 is a single-chain peptide derived from relaxin, studied in vitro as an agonist at the relaxin family peptide receptor 1 (RXFP1). This profile describes B7-33 by structure, receptor target, and how it is studied as a laboratory reference material.
What is B7-33?
B7-33 is a synthetic single-chain peptide based on the B-chain of relaxin. It is described here only as a molecular entity and laboratory reference material.
Receptor target
B7-33 is studied as an agonist at RXFP1, the receptor that native relaxin activates. In cell-based assays researchers characterize its binding and downstream signaling at this receptor.
How it is studied in vitro
Receptor-binding and signaling assays (for example cAMP or pathway reporters) in RXFP1-expressing cells, alongside identity and purity testing. Readouts are molecular, not outcomes in an organism.
Sourcing it
Happy Peptides supplies B7-33 as a research material with batch documentation. The supporting guides cover structure, RXFP1 signaling, sourcing/COA, and comparisons.
Related research guides
- B7-33 structure & the relaxin family
- RXFP1 signaling in vitro
- Sourcing B7-33 (COA, purity)
- B7-33 vs full-length relaxin
Research-use note
All materials discussed are supplied for in vitro laboratory research use only, and are not for human or animal use.













