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Table 1 Putative differentially recognized polypeptides by the Sm1 serum determined by mass spectrometry

From: Proteomic analyses and identification of arginine methylated proteins differentially recognized by autosera from anti-Sm positive SLE patients

Spot number

Protein name/gene name

Accession number

Measured MW/pI

Theoretical MW/pI

Mascot score (PMF/MS/MS)*

Arginine methylation sites (predicted or experimental)

1

Succinyl-CoA:3-ketoacid coenzyme A transferase 1, mitochondrial, OXCT1

P55809

53/7.8

56578/7.14

64/173

None

Aldehyde dehydrogenase X, mitochondrial, ALDH1B1

P30837; B2R8F0; Q8WX76; Q9BV45

57626/6.36

88/34

None

2

Alpha-enolase, ENO1

GMP2; Q71V37; Q7Z3V6; Q8WU71; Q9UCH6; Q9UM55

40/7.7

47481/7.01

x /97

None

Splicing factor, proline- and glutamine-rich, SFPQ

P23246; P30808; Q5SZ71

76216/4.95

x/52

RFR SR GGGGGFHRR G GGGGR GG (7, 9, 19, 25;) [19]; EEER RRRE (571); R GMGPGTPAGYGR G (681,693) [20]

3

Putative beta-actin-like protein 3, POTEKP

Q9BYX7; Q562N5

40/8.1

41989/5.91

x/95

None

Alpha-enolase, ENO1

 

47481/7.01

x/84

None

4

Alpha-enolase, ENO1

 

39/8.3

47481/7.01

99/202

None

5

LIM and SH3 domain protein 1, LASP1

Q14847; Q96ED2; Q96IG0

33/7.8

30097/6.61

(50)/149

None

6

Heterogeneous nuclear ribonucleoprotein D-like, HNRNPDL

O14979; Q6SPF2; Q7KZ74; Q7KZ75; Q96IM0; Q96S43

34/8.3

46580/9.59

none/55

STYGKASR GG GNHQ (408) [19]

7

Cellular nucleic acid-binding protein, CNBP

Q5U0E9; Q6PJI7; Q96NV3

19/7.9

20704/8.00

x/56

TGGGRGRGMR SRGRGGFTSD RGFQFVSSSL [20]

  1. *x indicates that the PMF search results were not consistent with the MS/MS results. “None” indicates that none of the PMF (peptide mass fingerprint) results (protein scores) are significant. The protein score in parentheses is not significant.