Abstract
BLACK and Dixon1 have presented an interesting and provocative view of the possible evolutionary history of three protamines of the Pacific herring, Clupea pallasi, the clupeines YI, YII and Z beginning with an archetypal pentapeptide. I wish to propose an alternative explanation.
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References
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Ando, T., and Suzuki, K., Biochim. Biophys. Acta, 140, 375 (1967).
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FITCH, W. Evolution of Clupeine Z, a Probable Crossover Product. Nature New Biology 229, 245–247 (1971). https://doi.org/10.1038/newbio229245a0
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DOI: https://doi.org/10.1038/newbio229245a0