MASCOT Search Results

Search metadata
User : Jennifer
E-mail : [email protected]
Search title : 2
MS data file : PRT1249__2.mgf
Database : Ecoli-MetEng 20200720 (4,898 sequences; 1,660,429 residues)
Timestamp : 23 Jun 2025 at 17:08:04 GMT
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Search parameters
Type of search : MS/MS Ion Search
Enzyme : Trypsin
Fixed modifications : Carbamidomethyl (C)
Variable modifications : Deamidated (NQ), Oxidation (M)
Mass values : Monoisotopic
Protein mass : Unrestricted
Peptide mass tolerance : ± 20 ppm
Fragment mass tolerance : ± 0.1 Da
Max missed cleavages : 1
Instrument type : ESI-FTICR
Number of queries : 4,602

Score distribution

Peptide score distribution

Peptide score distribution. Ions score is −10log(P), where P is the probability that the observed match is a random event. Individual ions scores > 17 indicate identity or extensive homology (p<0.05).

Protein score distribution for the first 50 proteins

[Deprecated] Score distribution for family members in the first 50 proteins. Protein scores are derived from ions scores as a non-probabilistic basis for ranking protein families.

Legend
Dupes Expect Rank U 1 2 Peptide
0.037 +2 GAYSLSLR significant
9 +1 GFFLFVEGGR top ranking
6.4e-005 +1 GSSIFGLAPGK significant and top ranking
1.3e-006 +1 X SSGTSYPDVLK peptide is found in all proteins in family member 1
6.2e-007 +1 / VCNYVSWIK peptide is found in some but not all proteins in family member 2
6.4e-005 +1 U GSSIFGLAPGK unique
+2 5.7e-005 +1 LNTLETEEWFFK peptide has two duplicates
0.18 +1 LNTLETEEWFFK duplicate peptide

Right-facing triangle (+) in the Dupes or Rank column indicates content that can be expanded by clicking on it. Down-facing triangle (-) indicates the content is expanded and can be collapsed. For more details about particular columns, see results format help.

Protein Family Summary

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Unassigned peptides, 401–500 (out of 4429)


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Peptide matches not assigned to protein families (no details means no match)

Query Observed Mr(expt) Mr(calc) ppm  M Score Expect Rank Peptide
Query Observed Mr(expt) Mr(calc) ppm  M Score Expect Rank Peptide
2555 510.7728 1019.5310 1019.5321 -1.05 0 1 3.8 +1Score > 19 indicates identity DMVLATLNK + Oxidation (M)
3409 814.4247 1626.8348 1626.8366 -1.05 1 1 3.3 +1Score > 18 indicates identity LDQHGGFIRQVLDK + 2 Deamidated (NQ)
3502 572.3325 1713.9757 1713.9600 9.17 1 1 1 +1Score > 13 indicates identity ILLIMGEWLAVQRR + Deamidated (NQ); Oxidation (M)
4261 629.8366 2515.3173 2515.3138 1.38 1 1 2.8 +1Score > 18 indicates identity RMISGEMDVVLVPQGTLIEQIR + 2 Oxidation (M)
3091 342.1942 1364.7477 1364.7663 -13.7 0 1 1.3 +1Score > 14 indicates identity EIAHLTDKPTLK
3853 644.0499 1929.1279 1929.1299 -1.03 0 1 0.87 +1Score > 13 indicates identity FLSALILLLVTTAAQAER
4140 563.2704 2249.0525 2249.0851 -14.5 1 1 3.5 +1Score > 19 indicates identity QSNLVEKLESLQPGYNYHK + 3 Deamidated (NQ)
3985 672.3401 2013.9985 2014.0346 -17.9 0 1 3.8 +1Score > 19 indicates identity IATPLGPLWVICDEQFR
2825 311.1370 1240.5189 1240.5142 3.76 1 1 0.92 +1Score > 13 indicates identity EFDRQMDER + Oxidation (M)
2773 602.2943 1202.5740 1202.5891 -12.5 1 1 3.7 +1Score > 19 indicates identity EADVQTKQER
3759 465.7369 1858.9185 1858.9346 -8.66 1 1 4.4 +1Score > 20 indicates identity AAGAELVGMEDLADQIKK + Deamidated (NQ)
2288 415.2317 828.4488 828.4593 -12.6 0 1 2.6 +1Score > 17 indicates identity ITPLEEK
2546 507.7619 1013.5092 1013.5142 -4.85 0 1 2.5 +1Score > 17 indicates identity LPGELSGGQR + Deamidated (NQ)
2438 318.5052 952.4938 952.4800 14.4 1 1 2.5 +1Score > 17 indicates identity FGGMKIER + Oxidation (M)
3713 610.6468 1828.9186 1828.9108 4.27 1 1 4.1 +1Score > 19 indicates identity WLDNEGKFRPENPVK + Deamidated (NQ)
2676 558.7719 1115.5292 1115.5458 -14.9 0 1 2.8 +1Score > 17 indicates identity QIDDQLLNR + 2 Deamidated (NQ)
2794 408.1989 1221.5749 1221.5989 -19.7 1 1 3.5 +1Score > 18 indicates identity QRSVFAEGAEK + Deamidated (NQ)
3215 714.3691 1426.7236 1426.7092 10.1 0 1 3.9 +1Score > 19 indicates identity LGIPDEALHNYGK + Deamidated (NQ)
3497 572.3309 1713.9709 1713.9600 6.37 1 1 1.1 +1Score > 13 indicates identity ILLIMGEWLAVQRR + Deamidated (NQ); Oxidation (M)
3138 463.5762 1387.7068 1387.6819 17.9 0 0 4.1 +1Score > 19 indicates identity NWYLLICNHR
2736 394.2086 1179.6040 1179.6261 -18.8 1 0 2.9 +1Score > 18 indicates identity DHRNWLALR
3875 390.5961 1947.9441 1947.9547 -5.41 0 0 4.1 +1Score > 19 indicates identity AVVLAGLPDVFCAGAAMDR + Oxidation (M)
3841 640.9741 1919.9005 1919.8968 1.90 0 0 3.6 +1Score > 19 indicates identity DVRPPAELISSMNAQMK + 2 Deamidated (NQ); 2 Oxidation (M)
3141 694.8666 1387.7186 1387.7347 -11.6 0 0 4.2 +1Score > 19 indicates identity SALNNFLEPLLR + 2 Deamidated (NQ)
2930 643.3619 1284.7092 1284.6939 12.0 0 0 3.1 +1Score > 18 indicates identity LGGAGASAVGWALR
3691 607.9953 1820.9641 1821.0004 -20.0 1 0 3 +1Score > 18 indicates identity HMELLAHSILKLICK + Oxidation (M)
2749 595.3221 1188.6296 1188.6437 -11.8 1 0 3.8 +1Score > 19 indicates identity RWNMLLSLR + Deamidated (NQ)
4365 900.7844 2699.3314 2699.3312 0.067 1 0 3.8 +1Score > 19 indicates identity AMELCRPLPWIDDDKPRLGDFR
3018 668.8227 1335.6308 1335.6531 -16.7 1 0 3.6 +1Score > 18 indicates identity QHNTLSKHNQK + 2 Deamidated (NQ)
2677 372.8510 1115.5312 1115.5459 -13.2 0 0 2.8 +1Score > 17 indicates identity QLDDLEVQR + Deamidated (NQ)
2977 657.3591 1312.7036 1312.6987 3.78 0 0 2.9 +1Score > 18 indicates identity QGATPLVVVEGSR + Deamidated (NQ)
3605 440.2393 1756.9281 1756.9505 -12.8 1 0 3.6 +1Score > 18 indicates identity STDNLPLREAIMLLR + Oxidation (M)
2437 318.4972 952.4698 952.4726 -2.98 0 0 2.3 +1Score > 16 indicates identity NLVENAHR + Deamidated (NQ)
4063 689.6917 2066.0533 2066.0717 -8.93 1 0 3.4 +1Score > 18 indicates identity RDAMQSLLLPPPAQQALAK + 3 Deamidated (NQ); Oxidation (M)
3696 608.3314 1821.9724 1821.9658 3.59 1 0 2.7 +1Score > 17 indicates identity MSGTVKLGYQRPLNIK + 2 Deamidated (NQ); Oxidation (M)
2821 310.8900 1239.5309 1239.5367 -4.72 0 0 0.97 +1Score > 13 indicates identity FNSSLSEDGQR + Deamidated (NQ)
2190 359.2047 716.3948 716.3817 18.4 0 0 1 +1Score > 21 indicates identity
Score > 13 indicates homology
GLTQAAR + Deamidated (NQ)
2744 395.8796 1184.6170 1184.6149 1.74 1 0 3.3 +1Score > 18 indicates identity DLPASERELR
3072 682.8774 1363.7402 1363.7248 11.3 1 0 1.3 +1Score > 14 indicates identity VFYPLNAKAADR
3504 572.3337 1713.9793 1713.9600 11.3 1 0 0.97 +1Score > 13 indicates identity ILLIMGEWLAVQRR + Deamidated (NQ); Oxidation (M)
3981 1005.5224 2009.0302 2008.9928 18.6 1 0 4.1 +1Score > 19 indicates identity TISQLYDPEKGMFLPDR
4072 692.6846 2075.0320 2075.0660 -16.4 1 0 0.94 +1Score > 20 indicates identity
Score > 13 indicates homology
LLEQAQEWPQPDGRPRR
2820 619.2965 1236.5784 1236.5986 -16.3 1 0 3.3 +1Score > 18 indicates identity KTNVFNEQVR + 3 Deamidated (NQ)
3009 443.8768 1328.6086 1328.6105 -1.43 0 0 1.7 +1Score > 15 indicates identity LFVMMTLGDDR + 2 Oxidation (M)
3945 501.0288 2000.0861 2000.0612 12.4 1 0 1.8 +1Score > 15 indicates identity KIVLALGGNALGDDLAGQMK + Deamidated (NQ); Oxidation (M)
2426 315.4810 943.4212 943.4399 -19.8 1 0 1.1 +1Score > 13 indicates identity YEYAKNR + Deamidated (NQ)
4042 1023.9916 2045.9686 2046.0051 -17.8 0 0 3.7 +1Score > 19 indicates identity ENVAALNINLSDADATLMR + Oxidation (M)
2732 391.8580 1172.5522 1172.5747 -19.2 0 0 2.1 +1Score > 16 indicates identity NIAGMVDLNPK + 2 Deamidated (NQ)
3171 349.9416 1395.7373 1395.7146 16.2 1 0 2.7 +1Score > 17 indicates identity RYYSLTTHNLK + Deamidated (NQ)
4329 654.3094 2613.2085 2613.2315 -8.82 1 0 4 +1Score > 19 indicates identity AISWSTDYQGMVNGILSGNGKQMR + Deamidated (NQ)
2364 304.8355 911.4847 911.5018 -18.7 1 0 1.6 +1Score > 15 indicates identity FFFAPKR
2774 401.8654 1202.5744 1202.5900 -13.0 1 0 4 +1Score > 19 indicates identity CQRCLLPEK
3865 484.9809 1935.8945 1935.8646 15.5 1 0 3.4 +1Score > 18 indicates identity QNSRTCYLSWHEAAGR + Deamidated (NQ)
2877 633.3675 1264.7204 1264.7431 -17.9 0 0 0.99 +1Score > 13 indicates identity TFFTVIVPLTK
3929 663.3433 1987.0081 1986.9799 14.2 0 0 1 +1Score > 20 indicates identity
Score > 13 indicates homology
HYPLEADNIFAAIAATNR + Deamidated (NQ)
2788 610.3033 1218.5920 1218.5880 3.30 1 0 4.2 +1Score > 19 indicates identity WEQIKTEER + Deamidated (NQ)
4174 791.0797 2370.2173 2370.1864 13.0 0 0 3.5 +1Score > 18 indicates identity DLNQELMRPHVFPFPLLMR + 2 Deamidated (NQ); Oxidation (M)
3570 874.9022 1747.7898 1747.8199 -17.2 0 0 2.9 +1Score > 17 indicates identity IDVDEFSHCLSASLR
2743 395.8716 1184.5930 1184.5720 17.7 0 0 3 +1Score > 17 indicates identity MQHQVNVSAR + Oxidation (M)
2965 653.3654 1304.7162 1304.6949 16.3 1 0 2.8 +1Score > 17 indicates identity TNPVTGRVAPHR + Deamidated (NQ)
4018 1019.5179 2037.0212 2037.0418 -10.1 1 0 4.6 +1Score > 19 indicates identity WVKQISEELHLDEILNA + Deamidated (NQ)
2483 328.4836 982.4290 982.4212 7.94 0 0 1.5 +1Score > 14 indicates identity VMSMNASAR + Deamidated (NQ); Oxidation (M)
3270 484.9032 1451.6878 1451.7047 -11.7 1 0 3.3 +1Score > 18 indicates identity MLTRGMCVELAR + Oxidation (M)
2910 640.3130 1278.6114 1278.5948 13.0 0 0 4.1 +1Score > 19 indicates identity MMQLTGNPEVK + 2 Oxidation (M)
2435 476.2516 950.4886 950.4756 13.7 1 0 3.8 +1Score > 18 indicates identity KMDAHPPR
4071 416.0015 2074.9711 2074.9849 -6.65 1 0 3.7 +1Score > 18 indicates identity MIKENQLMMLAHGVASPR + 2 Deamidated (NQ); 3 Oxidation (M)
3977 503.2475 2008.9609 2008.9683 -3.70 0 0 4.9 +1Score > 20 indicates identity WDFLHFGLTGTSAFDPAK
4356 888.4694 2662.3864 2662.3901 -1.39 1 0 3.2 +1Score > 18 indicates identity AHNSGHEVLIHLPMAPLSKQPLEK + Deamidated (NQ); Oxidation (M)
3408 543.2846 1626.8320 1626.8512 -11.8 1 0 4.1 +1Score > 19 indicates identity MLQQIVTTAHQRGK + Deamidated (NQ); Oxidation (M)
2854 628.3631 1254.7116 1254.7044 5.78 1 0 1.9 +1Score > 15 indicates identity ERQAIEQLIR
3352 769.4070 1536.7994 1536.7752 15.8 1 0 2.8 +1Score > 17 indicates identity MISNAVNRLMISR + Deamidated (NQ); 2 Oxidation (M)
2489 492.7168 983.4190 983.4165 2.63 0 0 1.1 +1Score > 13 indicates identity TTCSLCSR
4263 630.5433 2518.1441 2518.1805 -14.5 0 0 3.1 +1Score > 17 indicates identity FYTEDGNWDLVGNNTPIFFIR + Deamidated (NQ)
3730 614.2960 1839.8662 1839.8315 18.8 0 0 3.3 +1Score > 18 indicates identity YVWTTNGPEPLDYQR + 2 Deamidated (NQ)
4524 993.7466 3970.9573 3970.9941 -9.27 1 0 3.6 +1Score > 18 indicates identity YTEALQQIGSSSNSKVVMMPLEASSLMGSIAGIAELVK + 2 Oxidation (M)
2616 355.4718 1063.3936 1063.4054 -11.1 0 0 1 +1Score > 13 indicates identity ENNEDDATR + Deamidated (NQ)
3019 668.8241 1335.6336 1335.6340 -0.27 1 0 3.9 +1Score > 18 indicates identity TEEEIVERGMK + Oxidation (M)
1 300.0849 299.0776
2 300.1505 299.1432
3 300.1812 299.1739
4 300.1818 299.1745
5 301.0590 300.0517
6 301.0598 300.0525
7 301.0600 300.0527
8 301.0608 300.0535
9 301.0972 300.0899
10 301.1040 300.0967
11 301.1053 300.0980
12 301.1055 300.0982
13 301.1056 300.0983
14 301.1236 300.1163
15 301.1301 300.1228
16 301.1404 300.1331
17 301.1414 300.1341
18 301.1420 300.1347
19 301.1420 300.1347
20 301.1421 300.1348
21 301.1422 300.1349
22 301.1423 300.1350
23 301.1424 300.1351
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