Abstract

A novel splice variant of the bovine GALNTL5 gene identified in Chinese Holstein bull testis tissue and its mRNA expression

Author(s): H. Li, Q. Jiang, Z.H. Ju, J.M. Huang, X.G. Wang, C.H. Yang, Y. Sun, G.W. Yang, J.F. Zhong and C.F. Wang

The polypeptide N-acetylgalactosaminyltransferase-like protein 5 (GALNTL5) is a newly identified protein that is specifically expressed in testis tissue and participates in spermatogenesis. In this study, we characterized a novel bovine GALNTL5 splice variant, designated as GALNTL5-AS, by using real-time polymerase chain reaction (RT-PCR) and clone sequencing methods. The novel GALNTL5 isoform was derived from the complete transcript, GALNTL5-complete, via alternative splicing (AS). The pattern of the splice variant was exon skipping. Bovine GALNTL5 transcripts were expressed in the testis, as demonstrated by RT-PCR. The expression levels of both transcripts were higher in adult testes than in calf testes (P GALNTL5 gene function during bull sperm formation.

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