Table 2. Number of observations for peptides with different modifications for the sets to which retention factor values were fitted.

 

Peptide length of 10 or more residues

Peptide length less than 10 residues

ПТМ

N1

N2

M

C2

C1

N1

N2

M

C2

C1

[+304.21]

3029 (8463)

NA

NA

NA

NA

1103 (877)

NA

NA

NA

NA

K(+304.21)

NA

55 (57)

279 (460)

57 (99)

1906 (3093)

NA

0 (0)

27 (29)

0 (0)

569 (596)

[+229.16]

61 (150958)

NA

NA

NA

NA

22 (23346)

NA

NA

NA

NA

K(+229.16)

NA

529 (3033)

1896 (6587)

293 (1475)

28691 (80264)

0 (0)

181 (351)

237 (274)

63 (90)

15306 (15984)

T(+79.97)

0 (0)

0 (113)

43 (2187)

0 (19)

0 (0)

0 (0)

0 (9)

0 (155)

0 (0)

0 (0)

S(+79.97)

0 (32)

9 (842)

363 (12755)

0 (261)

0 (10)

0 (17)

0 (82)

31 (887)

0 (24)

0 (0)

Y(+79.97)

0 (0)

0 (69)

0 (534)

0 (32)

0 (0)

0 (0)

0 (16)

0 (59)

0 (10)

0 (0)

C(+71.04)

0 (0)

0 (0)

27 (100)

0 (9)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

C(+57.02)

254 (555)

277 (3017)

2330 (24527)

273 (2805)

0 (209)

49 (104)

47 (490)

159 (1852)

55 (502)

0 (18)

E(+57.02)

191 (254)

58 (128)

170 (438)

19 (37)

0 (0)

29 (43)

0 (0)

0 (16)

0 (0)

0 (0)

D(+57.02)

425 (644)

38 (83)

126 (285)

12 (20)

0 (0)

202 (283)

0 (0)

0 (0)

0 (0)

0 (0)

K(+42.01)

NA

0 (0)

11 (48)

0 (10)

0 (8)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

[+42.01]

355 (2267)

NA

NA

NA

NA

61 (305)

NA

NA

NA

NA

P(+31.99)

0 (0)

0 (0)

28 (163)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

M(+31.99)

0 (12)

11 (26)

92 (290)

17 (37)

0 (0)

0 (0)

0 (0)

11 (17)

0 (0)

0 (0)

K(+27.99)

NA

84 (109)

243 (332)

65 (91)

268 (377)

20 (21)

13 (19)

13 (14)

10 (11)

40 (59)

[+27.99]

1283 (2065)

NA

NA

NA

NA

143 (87)

NA

NA

NA

NA

M(+15.99)

406 (848)

444 (901)

2776 (23639)

340 (2712)

0 (177)

95 (188)

70 (120)

187 (922)

36 (234)

0 (31)

P(+15.99)

0 (0)

0 (0)

100 (102)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

K(+14.02)

NA

0 (10)

19 (55)

0 (0)

61 (119)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

[+14.02]

24 (34)

NA

NA

NA

NA

0 (0)

NA

NA

NA

NA

K(-.98)

NA

NA

NA

NA

16 (0)

NA

NA

NA

NA

0 (0)

R(-.98)

NA

NA

NA

NA

19 (0)

NA

NA

NA

NA

0 (0)

Notes. Here and in the following description of PTMs: [] – corresponds to the N-terminal modification of the main polypeptide chain; () – modification of the residue side radical or C-terminal COOH group; NA – not applicable for modification in this position due to the peculiarities of the program algorithm. The number of peptides with single PTMs is given (values less than 8 are set to zero), the number of peptides with more than one modification is given in the brackets.