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Table 1 Results of SEQUEST & SpectraST for spectra in clustered spectral sets

From: Enhanced peptide quantification using spectral count clustering and cluster abundance

Spectral Set ID

Sample

Sequence

XCorr

RT

precursor ion

precursor intensity

SpectraST

S366006

HCC-3

SIFSAVLDELK

2.35

6096.18

1223.4

25828.2

1

 

Normal-1

SIFSAVLDELK

2.38

6144.00

1222.6

12823.4

1

 

Normal-1

SIFSAVLDELK

2.12

6197.20

1224.2

385800.0

1

 

Normal-1

SIFSAVLDELK

2.30

6248.89

1224.2

145284.0

1

 

Normal-2

SIFSAVLDELK

1.99

6278.55

1223.4

6218.5

1

 

Normal-2

SIFSAVLDELK

2.35

6341.52

1222.3

14101.8

1

 

Normal-2

SIFSAVLDELK

1.98

6441.91

1223.1

2800.2

1

 

Normal-3

SIFSAVLDELK

2.56

6149.98

1224.4

421560.0

1

 

Normal-3

SIFSAVLDELK

2.37

6154.65

1222.3

23456.6

1

S1157004

Normal-1

VDFPQDQLTALTGR

2.77

3724.74

1565.1

106099.0

1

 

Normal-2

VDFPQDQLTALTGR

2.33

3647.59

1562.4

143286.0

1

 

Normal-1

VDFPQDQLTALTGR

2.46

3779.98

1562.2

75465.1

1

 

HCC-3

VDFPQDQLTALTGR

2.10

3854.18

1562.3

34323.8

1

 

Normal-2

VDFPQDQLTALTGR

2.07

3695.20

1562.7

159244.0

1

 

Normal-3

VDFPQDQLTALTGR

2.07

3825.73

1562.4

69159.3

1

 

Normal-3

VDFPQDQLTALTGR

2.24

3775.23

1562.9

71196.3

1

 

HCC-1

VDFPQDQLTALTGR

2.02

3930.66

1562.2

25175.7

1

 

HCC-2

VDFPQDQLTALTGR

1.95

3977.91

1562.2

12849.6

1

 

Normal-2

M#WLSSMCSMRSAR

1.29

3629.94

1564.7

86816.8

1

 

HCC-1

VDFPQDQLTALTGR

2.20

3907.36

1564.2

19403.5

1

S65002

HCC-1

EILVGDVGQTVDDPYATFVK

3.81

4619.64

1084.4

21166.7

1

 

HCC-3

EILVGDVGQTVDDPYATFVK

3.70

4573.01

1084.7

46939.4

X

 

HCC-3

EILVGDVGQTVDDPYATFVK

2.32

4579.55

1083.5

22077.0

1

 

Normal-1

EILVGDVGQTVDDPYATFVK

2.87

4516.45

1084.0

26598.5

1

 

Normal-2

EILVGDVGQTVDDPYATFVK

4.08

4461.41

1084.5

19416.7

X

 

Normal-2

EILVGDVGQTVDDPYATFVK

3.49

4514.74

1084.7

91100.7

X

 

Normal-3

EILVGDVGQTVDDPYATFVK

3.37

4548.32

1084.5

23254.4

1

  1. These spectra were clustered by the proposed Q-FISH algorithm. In the case of spectral set S366006, all spectra in spectral set were identified as a same peptide sequence "SIFSAVLDELK" by both of SEQUEST and SpectraST, while two spectra in S1157004 are not identified by SEQUEST (XCorr < 2.11). Also, all spectra in S65002 are identified by SEQUEST with high scores, while four spectra were only identified by SpectraST. If we relied only on SEQUEST or SpectraST, these spectra in S1157004 or S65002 would be excluded.