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Table 3 List of peptides that are characteristic of the Bovinae subfamily, with indication of their position in the corresponding proteins, mass to charge ratio (m/z), charge (z), measurement error (Δm), identification score (reported as -10lgP, i.e. converted P value; higher numbers indicate higher-confidence matches), retention time (RT), and animal species that contain that specific peptide. Deamidation variants of these peptides are not referenced in the table. Lower case letters in peptide sequences indicate the following modifications: n asparagine deamidation, m methionine oxidation, s serine phosphorylation, c cysteine carbamidomethylation (induced by sample treatment), w tryptophan oxidation, q glutamine deamidation or N-terminal glutamate conversion to pyroglutamate

From: Mixing, dipping, and fixing: the experimental drawing techniques of Thomas Gainsborough

Proteins

Accession number

Peptides

Position

m/z (exp)

z

Δm (ppm)

-10lgP

RT (min)

Animal species

Alpha S1 casein

P02662

HPIKHqGLPQEVLNENLLR

19-37

559.8104

4

0.1

40.64

103.31

Bos taurus, Bos mutus, Bos indicus, Bos grunniens, Bison bison bison

YYVPLGTQYTDAPSFSDIPNPIGSENSEK

180-208

1063.836

3

1.1

47.31

184.3

Bos taurus

YKVPqLEIVPNsAEER

119-134

976.9728

2

0.9

33.98

132.66

Bos taurus, Bos mutus, Bos indicus, Bos grunniens, Bison bison bison

Alpha S2 casein

P02663

nAVPITPTLNR

130-140

598.8367

2

2.4

36.27

111.8

Bos taurus, Bos indicus x Bos taurus, Bubalus bubalis, Bos mutus, Bos grunniens, Bison bison bison

AmKPWIQPK

204-212

557.808

2

0.9

31.44

46.2

Bos taurus, Bos indicus x Bos taurus, Bos mutus, Bison bison bison

NmAINPsKENLcSTFcK

40-56

709.2982

3

2.2

24.82

88.4

Bos taurus, Bos indicus x Bos taurus, Bos grunniens, Bison bison bison

TKVIPYVR

213-220

488.3035

2

1.2

22.53

58.3

Bos taurus, Bubalus bubalis, Bos mutus, Bos grunniens, Bison bison bison

Kappa casein

P02668

SPAQILQwQVLSNTVPAK

90-107

998.5488

2

2.1

64.79

161.5

Bos taurus, Bos mutus, Bos indicus, Bos grunniens, Bison bison bison, Bos indicus x Bos taurus, Bos gaurus,Bison bison athabascae,Boselaphus tragocamelus

qEQNqEqPIRcEKDER

22-37

691.3049

3

0.9

28.41

47.71

Bos taurus, Bos mutus, bos grunniens, Bos indicus, Bison bison bison

QVLSnTVPAK

98-107

529.2989

2

1.6

25.62

58.0

Bos taurus, Bos mutus, Bos indicus, Bison bison bison, Bos grunniens, Bos indicus x Bos taurus, Bos frontalis, Bison bonasus, Boselaphus tragocamelus, Tetracerus quadricornis, Bos javanicus, Bison bison athabascae, Boselaphus tragocamelus

Beta-lactoglobulin

P0275

TPEVDDEALEKFDK

141-154

818.3918

2

1.0

43.07

99.8

Bos taurus, Bos mutus, Bubalus bubalis, Bos indicus, Bison bison bison

LIVTqTmK

17-24

475.7655

2

1.1

21.81

48.54

Bos taurus, Bos mutus, Bos indicus, Bison bison bison