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Differences in binding characteristics of sex steroid binding protein in reproductive and nonreproductive female rainbow trout ( Oncorhynchus mykiss), black bream ( Acanthopagrus butcheri), and greenback flounder (Rhombosolea tapirina)
journal contribution
posted on 2023-05-16, 12:08 authored by Hobby, AC, Dominic GeraghtyDominic Geraghty, Pankhurst, NWThe binding characteristics of sex steroid binding protein (SBP) were investigated in vitellogenic and nonreproductive female rainbow trout (Oncorhynchus mykiss), black bream (Acanthopagrus butcheri), and greenback flounder (Rhombosolea tapirina). The binding capacity of rainbow trout and black bream SBP was significantly greater in vitellogenic than in nonreproductive-stage fish. A decrease in binding affinity was observed in male trout injected with estradiol (E2) compared to control fish. This difference was not observed after partial purification of the SBP by gel filtration and may have resulted from competitive inhibition of E2 binding by vitellogenin. No differences in flounder SBP binding characteristics were observed. © 2000 Academic Press.
History
Publication title
General and Comparative EndocrinologyVolume
120Pagination
249-259ISSN
0016-6480Department/School
Institute for Marine and Antarctic StudiesPublisher
Academic Press IncPlace of publication
San Diego, CaliforniaRepository Status
- Restricted