Definition of protamine
: any of various strongly basic proteins of relatively low molecular weight that are rich in arginine and are found associated especially with DNA in place of histone in the sperm cells of various animals (such as fish)
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Origin and Etymology of protamine
International Scientific Vocabulary prot- + amine
First Known Use: 1874
Medical Dictionary
protamine
playMedical Definition of protamine
: any of various strongly basic proteins of relatively low molecular weight that are rich in arginine and are found associated especially with DNA in place of histone in the sperm of various animals (as fish)
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Britannica.com: Encyclopedia article about protamine
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