Starfish oocytes are naturally arrested at the prophase stage of the first meiotic division and resume meiosis in response to 1-methyladenine (1-MeAde), the oocyte maturation-inducing hormone of starfish. Putative receptors for 1-MeAde have not yet been characterized biochemically, although the specific binding of 1-MeAde to the isolated cortices of starfish oocytes was reported so far. Based on the structure-activity relationship of 1-MeAde analogs, we have designed a photoaffinity labeling reagent. The photoaffinity labeling of oocyte membrane fractions, followed by immunoblotting analysis with anti-1-MeAde antibody, results in the detection of an almost single protein band. This 1-MeAde-binding protein might be a possible candidate of the maturation-inducing hormone receptor of starfish. © 2014 Springer Science+Business Media, New York.
CITATION STYLE
Kida, T., Matsuda, S., Kuyama, A., & Toraya, T. (2014). Immunophotoaffinity labeling of the binding proteins for 1-methyladenine, an oocyte maturation-inducing hormone of starfish. Methods in Molecular Biology, 1128, 331–341. https://doi.org/10.1007/978-1-62703-974-1_22
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