A type of protein fragment produced when different proteins are broken down by enzymes, containing mixed amino acid compositions.
From Greek 'hetero-' (different) + 'proteose' (a partially degraded protein, from 'proteios'). This biochemistry term appeared in 19th-century protein research.
When pepsin starts digesting your dinner, it creates intermediate products called proteoses and peptones—heteroproteose is just what you call them when they're made from different protein sources.
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