Theoretical masses of selected biomarker proteins for E. coli discrimination.

Theoretical mass values (m/z [M+H]+) of possible biomarkers for discrimination of E. coli strains are shown. The database was constructed by validated E. coli strains available on public collections and three isolated strains. Groups A to P indicate the classification based on mass patterns. – in the group column indicates the O-antigen is not determined. – in MS column means the peaks are absent.E. coli strains belong to the groups A to P are as bellows; A: O157-351, GTC 14545, GTC 14546, GTC 14552, O157-141, GTC 14513, GTC 14535, GTC 14536, GTC 14537, GTC 14544, GTC 14547, GTC 14551 and GTC 03904; B: O157-352; C: GTC 14550 and GTC 14553; D: GTC 14517, GTC 14507, GTC 14516, GTC 14538, GTC 14540, GTC 14549, GTC 14557 and GTC 14558; E: GTC 14515, GTC 14539 and GTC14548; F: GTC 14530, GTC 14601, GTC 14602, GTC 14603, JCM16574, NBRC 12062, NBRC 13168, NBRC 12734 and NBRC 3991; G: GTC 14518; H: GTC 14529; I: GTC 14559; J: NBRC 12713, ATCC 47076, NBRC 3301, NBRC 3972; K: NBRC 13893; L: NBRC 15034 and NBRC 14237; M: NBRC 13891; N: NBRC 3548; O: ATCC BAA-1743; P: JCM 16575.Theoretical masses of selected biomarker proteins for E. coli discrimination.