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Although analysis of the similarity between the 44 - kDa protein and the E . coli RecA protein did not show any significant homology between them , it revealed their identity by five amino - acid residues involved in the formation of the epitope that recognized the paratope of the RecA protein antibody for subsequent epitope - paratope binding of these proteins .
 GENE: E . coli RecA protein; GENE: RecA protein antibody
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: E . coli RecA protein; GENE: RecA protein antibody