| Literature DB >> 16949686 |
Chalermporn Ongvarrasopone1, Yaowaluck Roshorm, Suthasinee Somyong, Chetsada Pothiratana, Soontaree Petchdee, Jarasporn Tangkhabuanbutra, Samaisukh Sophasan, Sakol Panyim.
Abstract
Serotonin (5-HT) mediates a number of diverse physiological functions in crustaceans by interacting with various 5-HT receptor subtypes. A putative 5-HT receptor cloned from the ovary of the black tiger prawn (Penaeus monodon) consisted of 2291 nucleotides, encoding a putative 5-HT(1Pem) receptor protein of 591 amino acids. Transient expression of 5-HT(1Pem) in HEK293 cells demonstrated a saturable [3H]-5-HT binding with a Kd of 10.43+/-1.13 nM and Bmax of 1.53+/-0.06 pmol/mg. The putative 5-HT(1Pem) receptor is expressed in all tissues examined and is constitutively expressed in the ovary during ovarian maturation and spent phase. Polyclonal antibodies against the third intracellular loop (i3 loop) of the 5-HT receptor showed that the 5-HT(1Pem) receptor protein was expressed in the trabeculae of ovarian stages 1 and 2 but on the cortical rod and surrounding the oocyte membrane of stages 3 and 4, suggesting that receptor localization plays a critical role in regulating ovarian maturation and spawning in penaeus shrimp.Entities:
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Year: 2006 PMID： 16949686 DOI： 10.1016/j.bbaexp.2006.07.004
Source DB: PubMed Journal: Biochim Biophys Acta ISSN： 0006-3002