Georges D, Tashima L, Yamamoto S, Bryant-Greenwood GD. Relaxin-like peptide in ascidians. I. Identification of the peptide and its mRNA in ovary of Herdmania momus.
Gen Comp Endocrinol 1990;
79:423-8. [PMID:
2272463 DOI:
10.1016/0016-6480(90)90072-t]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The ovaries of the ascidian Herdmania momus were extracted for relaxin. Relaxin immunoactivity was eluted from Sephadex G-50 in the position of authentic porcine ovarian relaxin and these fractions were parallel to porcine relaxin in an homologous porcine relaxin radioimmunoassay. Poly(A)+ RNA from ascidian ovaries hybridized to a 32P-labeled porcine relaxin B-chain 48 mer oligonucleotide probe. There was no hybridization with 32P-labeled probes of equal length but was rather directed to the B-chain of human relaxin or to two different regions of the C-peptide of porcine relaxin. We conclude that the ascidian ovary produces a relaxin-like molecule, possibly with greater homology in the B-chain to mammalian relaxins than in the C-peptide region.
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