Rapid evolution of fertilization selectivity and lysin cDNA sequences in teguline gastropods.

@article{Hellberg1999RapidEO,
  title={Rapid evolution of fertilization selectivity and lysin cDNA sequences in teguline gastropods.},
  author={Michael E. Hellberg and Victor D. Vacquier},
  journal={Molecular biology and evolution},
  year={1999},
  volume={16 6},
  pages={839-48}
}
Proteins mediating intercellular recognition face opposing selective forces as they evolve: purifying selection to maintain function, and diversifying selection to alter specificity. Lysin is a 16-kDa protein which enables sperm of free-spawning marine snails to make a hole in the vitelline layer (VE) surrounding conspecific eggs. Previous work on abalone (Haliotis spp.) has shown that positive selection promotes rapid interspecific divergence of lysin. Here, we present data on the specificity… CONTINUE READING