. Author manuscript; available in PMC: 2010 Jun 1.

Published in final edited form as: Chem Res Toxicol. 2009 Jun;22(6):1050–1059. doi: 10.1021/tx9000144

Table 3.

^{^}. Carnosine–ONE-modified β-LG peptides detected by HPLC-ESI-MS/MS in the tryptic digest

Peptide sequence	Position	Mass of Carnosine–ONE-modified peptide		Modified residue
Peptide sequence	Position	Theoretical	Observed	Modified residue
LIVTQTMK	1–8	1277.73/1286.76	1277.78/1286.67	L1
VYVEELKPTPEGDLEILLQK	41–60	2657.44/2666.47	1329.36/1334.00^#	K47
IIAEKTK	71–77	1146.69/1155.71	1146.63/1155.71	K57
KIIAEK	70–75	1045.64/1054.67	1045.58/1054.65	K70
TKIPAVFK	76–83	1247.75/1256.78	1247.65/1256.68	K77
FDKALK	136–141	1065.61/1074.64	1065.53/1074.58	K138
ALPMHIR	142–148	1181.66/1190.69	1181.68/1190.59	H146

^{^}

SICs and tandem mass spectra of adducted peptides were presented in the Supporting Information, Figures S15–S21

double charged peak