1. 
   preprotein
   <biochemistry> A secretory protein with a signal peptide region attached. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?preprotein
   
   
2. 
   preprotein
   (pre-pro´tēn) a protein precursor that contains a signal peptide sequence; it is a nonpolar sequence at the head of the growing polypeptide chain and is required for its transfer into the cistern of the endoplasmic reticulum; the signal sequence is then cleaved to form the protein or proprotei...
   Found op http://www.encyclo.co.uk/local/21001
   
   
3. 
   preprotein
   Type: Term Pronunciation: prē-prō′tēn Definitions: 1. A secretory protein with a signal peptide region attached.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=71891
   
   

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