protamine

From prot- (“original”) +‎ -amine.

• (Received Pronunciation) IPA^(key): /ˈpɹəʊ.tə.miːn/
• (General American) IPA^(key): /ˈpɹoʊ.təˌmin/

protamine (plural protamines)

1. (biochemistry) 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).

• protamine sulfate

• “protamine”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “protamine”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.