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Table 1 Mass spectrometry MASCOT peptide identifications

From: Discovery of frameshifting in Alphavirus 6K resolves a 20-year enigma

Origin

Peptide

Observed

Mr(expt)

Mr(calc)

Delta

ppm

Score

Expect

6K/TF

K.SLSFL.S

566.3198

565.3125

565.3111

0.0013

2.30

24

6.5e-4

6K

K.SLSFLV.L

665.3886

664.3813

664.3795

0.0017

2.56

27

1.1e-4

TF?

K.SLSFF.S

600.3032

599.2959

599.2955

0.0005

0.83

15

0.0034

TF

K.SLSFLSATEPR.G

604.3198

1206.6250

1206.6244

0.0006

0.50

61

4.3e-8

TF

L.SATEPR.G

660.3338

659.3265

659.3238

0.0027

4.10

11

0.0089

TF

R.TFDSNAER.G

470.2130

938.4115

938.4093

0.0021

2.24

55

5.8e-7

TF

R.GGVPV.-

428.2513

427.2441

427.2430

0.0010

2.34

16

0.0062

E3

Y.DLLQAAL.T

743.4319

742.4246

742.4225

0.0021

2.83

32

3.2e-5

E3

L.EDNVDRPGYY.D

1227.5310

1226.5237

1226.5203

0.0034

2.77

32

1.3e-4

E3

R.MLEDNVDRPGYY.D + Oxidation (M)

744.3299

1486.6452

1486.6398

0.0054

3.63

58

8.1e-8

E3

R.MLEDNVDRPGYYDLLQ.A + Oxidation (M)

978.9579

1955.9013

1955.8934

0.0078

3.99

39

1.2e-5

E3

R.MLEDNVDRPGYYDLLQA.A + Oxidation (M)

1014.4784

2026.9423

2026.9306

0.0117

5.77

22

0.0013

E3

R.MLEDNVDRPGYYDLLQAAL.T + Oxidation (M)

1106.5379

2211.0613

2211.0517

0.0095

4.30

27

2.9e-4

E3

R.MLEDNVDRPGYYDLLQAALT.C + Oxidation (M)

771.7088

2312.1046

2312.0994

0.0052

2.25

67

7.2e-8

E3

R.MLEDNVDRPGYYDLLQAALTCR.N + Oxidation (M)

858.0809

2571.2208

2571.2097

0.0111

4.32

27

2.9e-4

E3

Y.ENNAEATLR.M

509.2524

1016.4903

1016.4886

0.0016

1.57

62

3.4e-8