Fujinoki M, Kawamura T, Toda T, Ohtake H, Ishimoda-Takagi T, Shimizu N, Yamaoka S, Okuno M. Identification of 36 kDa phosphoprotein in fibrous sheath of hamster spermatozoa.
Comp Biochem Physiol B Biochem Mol Biol 2004;
137:509-20. [PMID:
15082001 DOI:
10.1016/j.cbpc.2004.02.006]
[Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2003] [Revised: 01/13/2004] [Accepted: 02/12/2004] [Indexed: 11/25/2022]
Abstract
In our previous studies (Fujinoki et al., 2001, 2003), we reported that two types of 36 kDa proteins, designated 36K-A protein and 36K-B protein, obtained from hamster sperm flagella, are associated with motility activation and phosphorylated in a cAMP-dependent manner at serine residues. In the present experiments, we focused on the hamster (Mesocricetus auratus) 36K-A protein, which was analyzed by peptide mass finger printing and amino acid sequencing. The results suggest that 36K-A protein is a pyruvate dehydrogenase E1 component beta subunit lacking the N-terminal 30 amino acids. Moreover, our results suggest that 36 K-A protein is localized in the fibrous sheath of the principal piece of hamster spermatazoa.
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