Molecular cloning and immunolocalization of a novel vertebrate trp homologue from Xenopus

Bobanović, Laura K.; Laine, Mika; Petersen, Carl C. H.; Bennett, Deborah L.; Berridge, Michael J.; Lipp, Peter; Ripley, Scott J. and Bootman, Martin D. (1999). Molecular cloning and immunolocalization of a novel vertebrate trp homologue from Xenopus. Biochemical Journal, 340 pp. 593–599.

DOI: https://doi.org/10.1042/bj3400593

Abstract

We report the sequence, structure and distribution of a novel transient receptor potential trp homologue from Xenopus, Xtrp, determined by screening an oocyte cDNA library. On the basis of sequence similarity and predicted structure, Xtrp appears to be a homologue of mammalian trp1 proteins. Two polyclonal antibodies raised against distinct regions of the Xtrp sequence revealed Xtrp expression in various Xenopus tissues, and the localization of Xtrp at the plasma membrane of Xenopus oocytes and HeLa cells. Since capacitative calcium entry into Xenopus oocytes has been shown previously to be substantially inhibited by trp1 antisense oligonucleotides [Tomita, Kaneko, Funayama, Kondo, Satoh and Akaike (1998) Neurosci. Lett. 248, 195-198] we suggest that Xtrp may underlie capacitative calcium entry in Xenopus tissues.

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