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Article

Positive Darwinian selection on two homologous fertilization proteins: what is the selective pressure driving their divergence?

Journal of molecular evolution - 1 Jan 1997

Vacquier V D, Swanson W J, Lee Y H

Abstract excerpt

Most examples of positive selection inferred from nucleotide sequence data involve hostpathogen interactions. However, positive selection also promotes the divergence of proteins mediating sperm-egg recognition in marine invertebrates. The abalone spermatozoon has a large acrosomal vesicle containing two proteins of 16 kDa and 18 kDa. Lysin, the 16-kDa protein, exhibits species-specificity in dissolving a hole in...

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PMID: 9071007
DOI: 10.1007/pl00000049

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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