1. simple proteins found in sperm cells that bind to DNA and help package it compactly
Usage: biochemistry; plural form

Examples

• Protamines replace histones in mature sperm cells.
• The researcher studied how protamines condense DNA during sperm development.
• Protamines are rich in arginine and lysine amino acids.
• Fish protamines are commonly used in medical applications.
• The binding of protamines to DNA creates a highly compact structure.
• Scientists extracted protamines from salmon sperm for their experiment.