Task: Named Entity Recognition
Input (English):  The sequence of the 127 residue NrfF polypeptide , M ( r ) 14 , 522 , is strikingly similar to the CcI2 protein of R . capsulatus , especially in the putative haem - binding motif , RCPQCQNQN . ( ABSTRACT TRUNCATED AT 400 WORDS )
Output (English): CcI2 protein