peptide	protein	location
ALFLETEQLK	B3KNN9	143
ALFLETEQLK	B4DX43	92
ALFLETEQLK	F5GXJ9 ENSP00000418213.2	92
ALFLETEQLK	NP_001230209.1 Q13740-2 ENSP00000419236.2	143
ALFLETEQLK	NP_001230210.1	143
ALFLETEQLK	NP_001618.2 ENSP00000305988.5	143
ALFLETEQLK	Q13740	143