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Table 3 Tryptic peptides and transitions used in MRM assay

From: Rapid detection of colistin resistance protein MCR-1 by LC–MS/MS

Peptide

Charge

Precursor (Da)

T1

T2

T3

T4

T5

T6

DTFPQLAK

2+

460.2478

y5 + (16.7)

y6 ++ (16.7)

y3 + (22.7)

y6 + (22.7)

y5 ++ (16.7)

 

556.3453 Da

352.2105 Da

331.2340 Da

703.4137 Da

278.6763 Da

 

SVPAFFWTDK

2+

599.3006

y8 + (22)

y6 + (28)

y4 + (34)

y7 + (31)

y5 + (28)

y3 + (34)

1011.4934 Da

843.4026 Da

549.2667 Da

914.4407 Da

696.3352 Da

363.1874 Da

ADHVSFNGYER

2+

647.7942

y7 + (29.2)

y8 + (29.2)

y9 + (29.2)

y6 + (29.2)

  

872.3897 Da

971.4581 Da

1108.5170 Da

785.3577 Da

  
  1. (): collision energy in parentheses