PMID:10647005
| Citation |
Herrmann, BG, Koschorz, B, Wertz, K, McLaughlin, KJ and Kispert, A (1999) A protein kinase encoded by the t complex responder gene causes non-mendelian inheritance. Nature 402:141-6 |
|---|---|
| Abstract |
Males heterozygous for the t-haplotype form of mouse chromosome 17 preferentially transmit the t-chromosome to their progeny. Several distorter/sterility loci carried on the t-haplotype together impair flagellar function in all spermatozoa whereas the responder, Tcr, rescues t-sperm but not wild-type sperm. Thus, t-sperm have an advantage over wild-type sperm in fertilizing egg cells. We have isolated Tcr by positional cloning and show that it is a member of a novel protein kinase gene family, designated Smok, which is expressed late during spermiogenesis. Smok kinases are components of a signal cascade which may control sperm motility. Tcr has a reduced kinase activity, which may allow it to counterbalance a signalling impairment caused by the distorter/sterility loci. Tcr transgene constructs cause non-mendelian transmission of chromosomes on which they are carried, which leads to sex-ratio distortion when Tcr cosegregates with the Y chromosome. |
| Links |
PubMed Online version:10.1038/45970 |
| Keywords |
Amino Acid Sequence; Animals; Cloning, Molecular; Gene Expression; Haplotypes; Male; Mice; Molecular Sequence Data; Multigene Family; Protein Kinases/genetics; Protein Kinases/metabolism; Reverse Transcriptase Polymerase Chain Reaction; Sequence Homology, Amino Acid; Signal Transduction; Sperm Motility; Sperm Tail; Spermatogenesis/genetics; Spermatozoa/enzymology |
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