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, 201–300 (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
3980 670.6840 2009.0302 2008.9966 16.7 0 4 1.7 +1Score > 19 indicates identity ASNGLNIHLNHYESLLGR + 2 Deamidated (NQ)
2770 602.2933 1202.5720 1202.5832 -9.30 0 4 1.5 +1Score > 18 indicates identity QAWISEWQR
2964 327.1675 1304.6409 1304.6361 3.69 0 4 1.5 +1Score > 18 indicates identity WQSTSVNDVLR + Deamidated (NQ)
3041 337.4408 1345.7341 1345.7606 -19.7 1 4 1.1 +1Score > 17 indicates identity VYPLTVGDKVQK
3519 864.4838 1726.9530 1726.9577 -2.70 1 4 1 +1Score > 17 indicates identity LNALEGKLQTGEISVR
2824 621.2666 1240.5186 1240.5207 -1.68 0 4 0.4 +1Score > 13 indicates identity TEQQYENATR + 2 Deamidated (NQ)
2881 634.3641 1266.7136 1266.6932 16.1 0 4 0.46 +1Score > 13 indicates identity TPVALLDAPASGR
2781 606.8049 1211.5952 1211.6186 -19.3 0 4 1.5 +1Score > 18 indicates identity QLGVSYFLER + Deamidated (NQ)
3601 878.9440 1755.8734 1755.9050 -18.0 1 4 1.8 +1Score > 19 indicates identity VQQGRLVVNGASMPQR + Deamidated (NQ); Oxidation (M)
3044 337.4412 1345.7357 1345.7136 16.4 1 4 1.1 +1Score > 17 indicates identity MSELIVSRQQR
2287 414.2058 826.3970 826.3933 4.54 1 4 0.92 +1Score > 16 indicates identity EKHQQR + 2 Deamidated (NQ)
2343 893.4508 892.4435 892.4403 3.66 1 4 1.3 +1Score > 18 indicates identity AAFEDKGR
2741 395.8608 1184.5606 1184.5397 17.6 0 4 1.2 +1Score > 17 indicates identity HCVWEEVAR
3125 345.9425 1379.7409 1379.7483 -5.35 0 4 0.86 +1Score > 16 indicates identity IIFCGTLTAGSLK
3872 485.9830 1939.9029 1939.9244 -11.1 0 4 1.2 +1Score > 17 indicates identity HLQQMQHSLGMTVGTVR + 2 Deamidated (NQ); Oxidation (M)
2178 354.1964 706.3782 706.3796 -1.88 1 4 1.1 +1Score > 17 indicates identity LRSGMK + Oxidation (M)
3611 881.4874 1760.9602 1760.9308 16.7 1 4 1.1 +1Score > 17 indicates identity LLQDADVFITNVREK + Deamidated (NQ)
4076 695.0237 2082.0493 2082.0527 -1.66 1 4 1.9 +1Score > 19 indicates identity MNSIEQALKIAEQHNISR + Deamidated (NQ)
2661 548.7223 1095.4300 1095.4469 -15.4 1 4 0.41 +1Score > 13 indicates identity DFEDKDDGR
4361 895.4604 2683.3594 2683.3470 4.60 0 4 1.6 +1Score > 18 indicates identity ALAQAMHQAGKPLGFMCIAPAMLPK + 2 Oxidation (M)
4251 835.0648 2502.1726 2502.2060 -13.4 0 4 1.7 +1Score > 19 indicates identity SIIPSGYGVNPEGPTQECLSALGR + Deamidated (NQ)
2280 822.4517 821.4444 821.4508 -7.71 1 4 1.1 +1Score > 17 indicates identity QRLSYR
2767 401.5365 1201.5877 1201.5938 -5.12 1 4 2 +1Score > 19 indicates identity AEQAALQADKR + 2 Deamidated (NQ)
2358 302.8324 905.4754 905.4607 16.2 0 4 2 +1Score > 19 indicates identity QAGKPYDK
2002 543.3621 542.3548 542.3540 1.51 0 4 1.8 +1Score > 19 indicates identity AAIIR
2317 435.7578 869.5010 869.5083 -8.31 1 4 0.64 +1Score > 14 indicates identity ERLLSPR
4014 509.0045 2031.9889 2031.9709 8.88 1 4 0.54 +1Score > 20 indicates identity
Score > 13 indicates homology
AEPTSGGGQLSTAQKQNISR + 3 Deamidated (NQ)
3156 465.5809 1393.7209 1393.7388 -12.8 1 4 1.5 +1Score > 18 indicates identity LGERSCAYVVLK
3447 555.9594 1664.8564 1664.8774 -12.6 1 4 1.9 +1Score > 19 indicates identity AQVAIFKEIFDQVR + 2 Deamidated (NQ)
3413 545.6299 1633.8679 1633.8498 11.1 1 3 1.4 +1Score > 17 indicates identity FTSLGPLMDKLGNGGK
2372 459.7207 917.4268 917.4202 7.20 1 3 1.3 +1Score > 17 indicates identity EANEGDKR
4070 519.7497 2074.9697 2075.0106 -19.7 1 3 1.7 +1Score > 18 indicates identity RVGETAWAQDTIADCLLR + Deamidated (NQ)
2390 310.1582 927.4528 927.4661 -14.4 0 3 0.8 +1Score > 15 indicates identity GLLPENER + Deamidated (NQ)
2507 494.7587 987.5028 987.4872 15.8 0 3 2.2 +1Score > 19 indicates identity ELALEEER
3991 673.6527 2017.9363 2017.9626 -13.1 0 3 1.6 +1Score > 18 indicates identity IDVSQVDVSMNGIELQDR + Deamidated (NQ)
3999 675.3585 2023.0537 2023.0442 4.67 1 3 1.5 +1Score > 18 indicates identity VMAGLGIAVVSTSKGVMTDR + 2 Oxidation (M)
2389 310.1582 927.4528 927.4661 -14.4 0 3 0.8 +1Score > 15 indicates identity GLLPENER + Deamidated (NQ)
2737 394.2089 1179.6049 1179.6261 -18.0 1 3 1.5 +1Score > 18 indicates identity DHRNWLALR
3898 980.0395 1958.0644 1958.0320 16.6 0 3 1.2 +1Score > 17 indicates identity NNTTLLSAITLEAALQQR + 2 Deamidated (NQ)
3231 476.5841 1426.7305 1426.7052 17.7 0 3 2.2 +1Score > 19 indicates identity LQQIEPNAGTEAR + Deamidated (NQ)
3535 868.9810 1735.9474 1735.9468 0.35 1 3 1 +1Score > 16 indicates identity IVTEEVVVKNHNAVGK + Deamidated (NQ)
3632 444.7264 1774.8765 1774.9036 -15.3 1 3 1 +1Score > 20 indicates identity
Score > 16 indicates homology
SGITLPTREMWAQLR + Deamidated (NQ); Oxidation (M)
4145 567.0674 2264.2405 2264.2092 13.8 0 3 0.82 +1Score > 15 indicates identity SYPITIASGLFNEPASFLPLK
2623 356.1640 1065.4702 1065.4761 -5.53 0 3 0.82 +1Score > 15 indicates identity TMLQQQGSR + 2 Deamidated (NQ); Oxidation (M)
2078 322.1648 642.3150 642.3085 10.1 0 3 0.48 +1Score > 13 indicates identity HTTER
2509 496.7747 991.5348 991.5161 19.0 0 3 1.4 +1Score > 17 indicates identity IPAYEMIR
3153 349.1903 1392.7321 1392.7136 13.3 1 3 1.4 +1Score > 17 indicates identity EDVQAYVKEAIK + Deamidated (NQ)
3541 435.2404 1736.9325 1736.9420 -5.50 1 3 1.3 +1Score > 17 indicates identity VNQPQDLGIALARAIR + 3 Deamidated (NQ)
2610 527.8055 1053.5964 1053.5818 13.9 1 3 0.65 +1Score > 14 indicates identity ANNKVGLAPVA + Deamidated (NQ)
3574 438.7353 1750.9121 1750.9254 -7.58 1 3 1.6 +1Score > 18 indicates identity AFKDLGFDSLAAVELR
4060 688.3211 2061.9415 2061.9347 3.30 1 3 1.9 +1Score > 19 indicates identity MSSMTTTDNKAFLNELAR + Deamidated (NQ); 2 Oxidation (M)
3989 673.0214 2016.0424 2016.0713 -14.4 1 3 1.9 +1Score > 18 indicates identity NNLPLLNDLRVFMLVAR + 3 Deamidated (NQ); Oxidation (M)
3500 857.9937 1713.9728 1713.9625 6.05 1 3 0.59 +1Score > 13 indicates identity GVELLSTGGTARLLAEK
4051 514.7552 2054.9917 2054.9612 14.8 1 3 2.5 +1Score > 20 indicates identity TAMSSNIELASAEVMKQGR + Deamidated (NQ); 2 Oxidation (M)
3927 994.5030 1986.9914 1987.0295 -19.2 0 3 1 +1Score > 20 indicates identity
Score > 16 indicates homology
TLTIAAPGAASMQLAENALK + Deamidated (NQ); Oxidation (M)
2903 640.3117 1278.6088 1278.5948 11.0 0 3 1.9 +1Score > 18 indicates identity MMQLTGNPEVK + 2 Oxidation (M)
4166 782.0927 2343.2563 2343.3022 -19.6 1 3 1.4 +1Score > 17 indicates identity NIALQAAQPLVHGVSLTLQRGR + 2 Deamidated (NQ)
4016 509.2581 2033.0033 2032.9710 15.9 1 3 2.4 +1Score > 19 indicates identity QDAVQHAQQLLKMMGYGV + Deamidated (NQ); Oxidation (M)
4050 1028.0333 2054.0520 2054.0756 -11.5 1 3 2 +1Score > 18 indicates identity QTQTPRNLSIISPTGLGDR + Deamidated (NQ)
3234 476.5844 1426.7314 1426.7052 18.4 0 3 2.4 +1Score > 19 indicates identity LQQIEPNAGTEAR + Deamidated (NQ)
3218 476.5821 1426.7245 1426.7092 10.7 0 3 2.4 +1Score > 19 indicates identity LGIPDEALHNYGK + Deamidated (NQ)
4199 805.7601 2414.2585 2414.2378 8.57 1 3 2.1 +1Score > 19 indicates identity FVEGKPLMLEDSYMPVKLFR + Oxidation (M)
2729 585.7927 1169.5708 1169.5863 -13.2 0 3 1.4 +1Score > 17 indicates identity LQLANVSCHK + Deamidated (NQ)
3010 443.8973 1328.6701 1328.6738 -2.78 1 3 2.1 +1Score > 19 indicates identity YQKINAHHYR
2845 418.1851 1251.5335 1251.5441 -8.50 0 3 0.6 +1Score > 13 indicates identity MFEINPVNNR + 3 Deamidated (NQ); Oxidation (M)
3057 340.9355 1359.7129 1359.7068 4.49 0 3 0.93 +1Score > 20 indicates identity
Score > 15 indicates homology
MQLEVVDILER + Oxidation (M)
3581 438.7429 1750.9425 1750.9254 9.78 1 3 1.3 +1Score > 16 indicates identity AFKDLGFDSLAAVELR
2868 419.8875 1256.6407 1256.6513 -8.46 0 3 1.9 +1Score > 18 indicates identity IAIAVGNADAWR + Deamidated (NQ)
2283 412.2290 822.4434 822.4422 1.56 1 3 1.2 +1Score > 16 indicates identity LKEFMR
2734 393.5333 1177.5781 1177.5615 14.1 0 3 0.94 +1Score > 20 indicates identity
Score > 15 indicates homology
LNIDDVDFAR + Deamidated (NQ)
3232 476.5841 1426.7305 1426.7052 17.7 0 3 2.5 +1Score > 19 indicates identity LQQIEPNAGTEAR + Deamidated (NQ)
2113 333.1911 664.3676 664.3544 19.9 0 3 1.7 +1Score > 17 indicates identity EIFTR
3844 962.4358 1922.8570 1922.8462 5.65 1 3 1.2 +1Score > 16 indicates identity EQGMEGARDLALEMANR + Deamidated (NQ); 2 Oxidation (M)
4280 846.4172 2536.2298 2536.1870 16.9 0 3 2.5 +1Score > 19 indicates identity NLNSIPAFDDNYIWVLNDEAGR + Deamidated (NQ)
2848 418.5795 1252.7167 1252.7404 -19.0 1 3 0.65 +1Score > 13 indicates identity IVSVPLWQRR
3479 565.9932 1694.9578 1694.9679 -5.95 0 3 0.81 +1Score > 14 indicates identity LLANRPESALAVTLAR + Deamidated (NQ)
4173 593.0709 2368.2545 2368.2386 6.70 1 3 1.7 +1Score > 18 indicates identity SLVEAAFSQLSAERSFASLSLR
2538 337.8151 1010.4235 1010.4305 -6.95 0 3 0.71 +1Score > 14 indicates identity DGTFTNAER + Deamidated (NQ)
3790 940.4628 1878.9110 1878.8782 17.5 0 3 2.2 +1Score > 19 indicates identity ADCLNNVLDAITQFER + Deamidated (NQ)
2925 429.2297 1284.6673 1284.6786 -8.80 1 3 2.2 +1Score > 19 indicates identity INGEIRAQEVR + Deamidated (NQ)
2081 324.1737 646.3328 646.3398 -10.8 1 3 2.2 +1Score > 19 indicates identity NAGKTR + Deamidated (NQ)
4148 758.7358 2273.1856 2273.1573 12.4 1 3 1.5 +1Score > 17 indicates identity INKDDIVINDIAVSLSNICR + 2 Deamidated (NQ)
2003 543.3629 542.3556 542.3540 2.99 0 3 2.3 +1Score > 19 indicates identity AAIIR
2117 670.4249 669.4176 669.4173 0.42 0 3 0.55 +1Score > 13 indicates identity ATPLIR
2940 431.2294 1290.6664 1290.6642 1.67 0 3 2.5 +1Score > 19 indicates identity LGQGPGLMLFDK + Oxidation (M)
3124 345.9418 1379.7381 1379.7483 -7.38 0 2 1.2 +1Score > 16 indicates identity IIFCGTLTAGSLK
2752 596.3547 1190.6948 1190.7135 -15.7 0 2 0.57 +1Score > 13 indicates identity VALATTHLPLR
4068 690.9865 2069.9377 2069.9728 -17.0 1 2 1.8 +1Score > 17 indicates identity VATNLARNMVTQWGFSEK + 3 Deamidated (NQ); Oxidation (M)
3275 728.3678 1454.7210 1454.7412 -13.9 1 2 2.2 +1Score > 18 indicates identity GALQQEMTRIHR + Oxidation (M)
2959 434.8768 1301.6086 1301.6285 -15.3 0 2 1.4 +1Score > 16 indicates identity GQSIDDMIPAQK
4295 642.8259 2567.2745 2567.3119 -14.6 1 2 2.9 +1Score > 20 indicates identity TVDPLAGSYYIESLTDQIVKQAR + Deamidated (NQ)
2655 543.8011 1085.5876 1085.6015 -12.8 1 2 2.5 +1Score > 19 indicates identity QVLNMPTKR
4019 680.0150 2037.0232 2037.0275 -2.10 0 2 2.8 +1Score > 19 indicates identity MQTVMQTLLPYLNQALR + 2 Deamidated (NQ); Oxidation (M)
3543 579.9857 1736.9353 1736.9097 14.7 1 2 1.4 +1Score > 16 indicates identity QPVYQLYTLLNRAR + 3 Deamidated (NQ)
3542 579.9849 1736.9329 1736.9097 13.4 1 2 1.6 +1Score > 17 indicates identity QPVYQLYTLLNRAR + 3 Deamidated (NQ)
3285 733.3430 1464.6714 1464.6692 1.53 0 2 1.7 +1Score > 17 indicates identity GTSEISAGNADLSSR + Deamidated (NQ)
3835 640.0194 1917.0364 1917.0095 14.0 1 2 1 +1Score > 15 indicates identity QADGEKVIQVPIDLYTK + Deamidated (NQ)
4323 868.7676 2603.2810 2603.2901 -3.51 1 2 1 +1Score > 20 indicates identity
Score > 15 indicates homology
GEEGLFDLLRELGPMTVEDLAQR + Oxidation (M)
2510 496.7749 991.5352 991.5161 19.4 0 2 1.8 +1Score > 17 indicates identity IPAYEMIR
2740 395.8606 1184.5600 1184.5422 15.0 0 2 1.8 +1Score > 17 indicates identity GDQAPDADQLR
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