Task: Named Entity Recognition
Input (English):  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 .
Output (English): RecA protein antibody