cDNA cloning of a novel testis-specific calcineurin B-like protein

Abstract

A cDNA clone encoding a novel calcineurin B-like protein (CBLP) was isolated from a rat testis cDNA library by cross-hybridization with a calcineurin B cDNA probe. CBLP is composed of 176 amino acids and contains four putative Ca(2+)-binding domains. The overall predicted amino acid sequence homology between CBLP and calcineurin B is 82%. Northern blots showed that transcripts for CBLP are specifically and highly expressed in the testis.