MASCOT Search Results

Search metadata
User : Jennifer
E-mail : [email protected]
Search title : PRT1377_JBEI_1
MS data file : PRT1377_JBEI_1.mgf
Database : Ecoli-MetEng 20200720 (4,900 sequences; 1,661,431 residues)
Timestamp : 23 Jan 2026 at 21:28:41 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 : 7,307

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 > 15 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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Protein families 1–5 (out of 5)


Page: 1 

+1

Accession Score Description
1 SYS_ECOLI 37 Serine--tRNA ligase OS=Escherichia coli (strain K12) GN=serS PE=1 SV=1

+2

Accession Score Description
1 K1C10_HUMAN 28 Keratin, type I cytoskeletal 10 OS=Homo sapiens GN=KRT10 PE=1 SV=6

+3

Accession Score Description
1 YMIA_ECOLI 17 Uncharacterized protein YmiA OS=Escherichia coli (strain K12) GN=ymiA PE=1 SV=2

+4

Accession Score Description
1 Q88JG6_PSEPK 15 histidine kinase OS=Pseudomonas putida (strain ATCC 47054 / DSM 6125 / CFBP 8728 / NCIMB 11950 / KT2440) OX=160488 GN=PP_2683 PE=4 SV=2

-5

Accession Score Description
1 PERM_ECOLI 13 Putative permease PerM OS=Escherichia coli (strain K12) GN=perM PE=3 SV=1
Score Mass Matches Sequences emPAI
5.1 PERM_ECOLI 13 39283 1 (1) 1 (1) 0.08
Putative permease PerM OS=Escherichia coli (strain K12) GN=perM PE=3 SV=1

-1 peptide matches (1 non-duplicate, 0 duplicate)

Query Dupes Observed Mr(expt) Mr(calc) ppm  M Score Expect Rank U Peptide
D:\Xcalibur\Data\Jennifer\PRT1377 Andy\PRT1377_JBEI_1.raw

Score > 13 indicates identity

4078   724.8293 1447.6440 1447.6298 9.85 0 13 0.062 -1Score > 13 indicates identity U -.MLEMLMQWYR.R + 3 Oxidation (M)
No other peptide matches in query

Page: 1 

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