[Important role of C-terminal amino acid sequence of the luteinizing hormone alpha-subunit in its recombination with the beta-subunit].

Five amino acid residues, i. e. serine, lysine, histidine and two tyrosine residues, are split from the C-end of the alpha-subunit of bovine luteinizing hormone by carboxypeptidase A. Gel-filtration through Sephadex G-100 demonstrated that the carboxypeptidase-treated alpha-subunit is not recombined with the native beta-subunit and does not form complex molecules of the hormone.