on the other hand , the bm13 mouse has shifted the major part of its m-mulv restriction to kb , a profound alteration in ctl responsiveness due to the alteration of three amino acids ( leu to gln at 114 , phe to tyr at 116 , and glu to asp at 119 ) in a peptide stretch of beta-pleated sheet structure lining the bottom of the antigen-binding cleft .
C0002520
amino acids
C0017797
gln