| preprocollagen | The precursor of collagen that is synthesised on ribosomes; procollagen with a leader or signal sequence that directs the polypeptide chain into the vesicular space of the endoplasmic reticulum. (05 Mar 2000) |
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| preprocollagenase | <enzyme> Precursor of EC 3.4.24.3 Registry number: EC 3.4.24.- Synonym: type IV preprocollagenase (26 Jun 1999) |