Molecular cloning and characterization of cDNA sequences coding for rat relaxin

Abstract
Using a synthetic oligonucleotide primer, cloned DNA fragments, each containing the entire coding sequence of rat relaxin, were isolated from a clone bank of ovarian mRNA sequences. The nucleotide sequence of these clones demonstrates that relaxin is synthesized as a preprorelaxin molecule with an unexpectedly large connecting peptide of 105 amino acid residues.