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Table 2 Identification of differentially (P < 0.05) phosphorylated 2-DE protein spots in DFD and control meat samples by MALDI-TOF and MALDI-TOF/TOF MS

From: The first evidence of global meat phosphoproteome changes in response to pre-slaughter stress

Spot no.a

Type of meat

Protein identityb

Abbrev. (isospot)

Accession

Mr (kDa) Obs./Expc

pI

Obs./Expc

Scored

Sequence coveragee

1

DFD

Phosphoglucomutase-1

PGM1 (1)

PGM1_BOVIN

66.2/61.8

5.90/6.36

415

45

5

DFD

Unidentified

  

69.9/61.8

6.98/6.36

  

Control

Phosphoglucomutase-1

PGM1 (2)

PGM1_BOVIN

69.9/61.8

6.98/6.36

552

41

6

Control

Cytochrome b-c1 complex subunit 1, mitocondrial

UQCRC1

QCR1_BOVIN

53.9/53.4

5.60/5.94

364

47

7

DFD

Beta-enolase

ENO3 (1)

ENOB_BOVIN

51.9/47.4

6.33/7.60

269

39

8

DFD

Beta-enolase

ENO3 (2)

ENOB_BOVIN

51.8/47.4

6.45/7.60

253

34

9

DFD

Beta-enolase

ENO3 (3)

ENOB_BOVIN

51.7/47.4

6.63/7.60

269

48

10

DFD

Actin, alpha skeletal muscle

ACTA1 (1)

ACTS_BOVIN

42.2/42.4

4.95/5.23

474

62

11

DFD

Actin, alpha 1, skeletal muscle

ACTA1 (2)

A4IFM8_BOVIN

41.6/42.4

4.99/5.23

439

51

15

DFD

Creatin kinase M-type

CKM (1)

KCRM_BOVIN

45.0/43.2

6.34/6.63

266

39

16

DFD

Creatin kinase M-type

CKM (2)

KCRM_BOVIN

44.1/43.1

6.42/6.63

369

49

18

Control

Actin, alpha, skeletal muscle

ACTA1 (3)

ACTS_BOVIN

45.3/42.4

5.58/5.23

519

43

19

Control

Actin, alpha, skeletal muscle

ACTA1 (4)

ACTS_BOVIN

44.5/42.4

5.78/5.23

453

39

20

Control

Actin, alpha, skeletal muscle

ACTA1 (5)

ACTS_BOVIN

40.0/42.4

5.80/5.23

423

33

21

Control

Actin, alpha, skeletal muscle

ACTA1 (6)

ACTS_BOVIN

36.5/42.4

5.45/5.23

484

53

22

DFD

Troponin T, fast skeletal muscle

TNNT3 (1)

TNNT3_BOVIN

37.8/32.1

6.31/5.99

66

8

23

DFD

Troponin T fast skeletal muscle type

TNNT3 (2)

TNNT3_BOVIN

37.8/32.1

6.38/5.59

62

13

24

DFD

Troponin T, fast skeletal muscle

TNNT3 (3)

TNNT3_BOVIN

37.8/32.1

6.44/5.99

145

13

25

DFD

Troponin T, fast skeletal muscle

TNNT3 (4)

TNNT3_BOVIN

37.8/32.1

6.62/5.99

60

13

26

DFD

F-actin-capping protein subunit alpha-2

CAPZA2

CAZA2_BOVIN

35.4/33.1

5.48/5.57

74

16

27

Control

Actin, alpha skeletal muscle

ACTA1 (7)

ACTS_BOVIN

35.8/42.4

5.54/5.23

300

23

30

Control

Troponin T, slow skeletal muscle

TNNT1 (1)

TNNT1_BOVIN

33.8/31.3

6.53/5.71

109

20

30A

DFD

Troponin T, slow skeletal muscle

TNNT1 (2)

TNNT1_BOVIN

35.5/31.3

5.63/5.71

71

14

33

Control

Heat shock protein beta-1

HSPB1 (1)

HSPB1_BOVIN

25.8/22.4

5.05/5.98

230

36

34

DFD

Heat shock protein beta-1

HSPB1 (2)

E1BEL7_BOVIN

26.2/22.6

5.09/5.77

159

20

37

DFD

Heat shock protein beta-1

HSPB1 (3)

E1BEL7_BOVIN

25.9/22.6

5.34/5.77

163

27

44

Control

Myosin, light chain 6B, alkali, smooth muscle and non-muscle

MYL6B (1)

Q148H2_BOVIN

20.9/23.5

5.43/5.40

109

26

46

Control

Myosin, light chain 6B, alkali, smooth muscle and non-muscle

MYL6B (2)

Q148H2_BOVIN

21.1/23.5

5.69/5.40

329

58

50

Control

Heat shock protein beta-6

HSPB6

HSPB6_BOVIN

18.7/17.5

6.28/5.95

146

39

51

Control

Myosin regulatory light chain 2, ventricular/cardiac muscle isoform

MYL2 (1)

MLRV_BOVIN

18.1/18.9

4.86/4.86

399

65

52

Control

Myosin regulatory light chain 2, ventricular/cardiac muscle isoform

MYL2 (2)

F1ME15_BOVIN

18.2/18.9

4.90/4.86

380

76

53

DFD

Myosin regulatory light chain 2, fast skeletal muscle isoform

MYLPF (1)

MLRS_BOVIN

17.7/19.1

4.74/4.91

363

61

54

DFD

Myosin regulatory light chain 2, fast skeletal muscle isoform

MYLPF (2)

MLRS_BOVIN

17.6/19.1

4.77/4.91

88

23

  1. aGel position of assigned spots is shown in Fig. 1. bAll identified proteins were matched to Bos taurus proteins. cTheoretical (Th) isoelectric point (pI) and molecular mass (Mr) were obtained from UniProtKB/Swiss-Prot databases. Observed (Ob) pI and Mr were obtained from the spot position on the gel. dThe Mascot baseline statistically significant (P-value < 0.05) score was 56. ePercentage of coverage of the entire amino acid sequence by matched peptides