8333
To study the role of heavy chain motifs in substrate recognition , secreted variants of recombinant bovine proenteropeptidase were constructed by replacing the transmembrane domain with a signal peptide .
 GENE: recombinant bovine proenteropeptidase
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: recombinant bovine proenteropeptidase 
Answer:
 GENE: recombinant bovine proenteropeptidase