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
Export

Not what you expected? Try the select summary.

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

Filters

[help]

Show

Protein families 1–10 (out of 44)


Page: 1 2 3 4 5 Next 

+1

Accession Score Description
1 YHBW_ECOLI 340 Uncharacterized protein YhbW OS=Escherichia coli (strain K12) GN=yhbW PE=4 SV=1

-2

Accession Score Description
1 Q9EX54_STRCO 282 Putative type I polyketide synthase OS=Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145) OX=100226 GN=SCO6273 PE=4 SV=1
Score Mass Matches Sequences emPAI
2.1 Q9EX54_STRCO 282 42499 20 (16) 4 (4) 0.69
Putative type I polyketide synthase OS=Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145) OX=100226 GN=SCO6273 PE=4 SV=1

-20 peptide matches (7 non-duplicate, 13 duplicate)

Query Dupes Observed Mr(expt) Mr(calc) ppm  M Score Expect Rank U Peptide
2108 +3 333.1804 664.3462 664.3432 4.63 0 25 0.007 +1Score > 16 indicates identity U R.ELFEK.Y
2112 +1 665.3539 664.3466 664.3432 5.20 0 36 0.00052 +1Score > 16 indicates identity U R.ELFEK.Y
2255 +1 392.2199 782.4252 782.4221 3.98 0 29 0.0012 +1Score > 13 indicates identity U R.VHCLVR.G
2337   890.5123 889.5050 889.5022 3.23 0 35 0.00074 +1Score > 17 indicates identity U R.GLPVSVYR.V
2339 +4 445.7603 889.5060 889.5022 4.38 0 39 0.00028 +1Score > 16 indicates identity U R.GLPVSVYR.V
2719 +2 581.3249 1160.6352 1160.6302 4.35 1 51 2.8e-005 +1Score > 18 indicates identity U R.DRGLPVSVYR.V
D:\Xcalibur\Data\Jennifer\20250522 PRT1249 Qingyun\PRT1249__2.raw

Score > 19 indicates identity

2721 +2 387.8862 1160.6368 1160.6302 5.66 1 35 0.0012 -1Score > 19 indicates identity U R.DRGLPVSVYR.V
No other peptide matches in query

2 subsets and intersections (2 subset proteins in total)

Score Mass Subset of
YAHA_ECOLI 67 0 2.1
description
YGGE_ECOLI 56 26619 2.1
Uncharacterized protein YggE OS=Escherichia coli (strain K12) GN=yggE PE=4 SV=1

+3

Accession Score Description
1 CH60_ECOLI 258 60 kDa chaperonin OS=Escherichia coli (strain K12) GN=groL PE=1 SV=2

+4

Accession Score Description
1 TRYP_PIG 176 Trypsin OS=Sus scrofa PE=1 SV=1

+5

Accession Score Description
1 CRP_ECOLI 142 cAMP-activated global transcriptional regulator CRP OS=Escherichia coli (strain K12) GN=crp PE=1 SV=1

+6

Accession Score Description
1 K2C1_HUMAN 119 Keratin, type II cytoskeletal 1 OS=Homo sapiens GN=KRT1 PE=1 SV=6

+7

Accession Score Description
1 EFTU1_ECOLI 103 Elongation factor Tu 1 OS=Escherichia coli (strain K12) GN=tufA PE=1 SV=1

+8

Accession Score Description
1 RL4_ECOLI 74 50S ribosomal protein L4 OS=Escherichia coli (strain K12) GN=rplD PE=1 SV=1

+9

Accession Score Description
1 ATDA_ECOLI 63 Spermidine N(1)-acetyltransferase OS=Escherichia coli (strain K12) GN=speG PE=1 SV=2

+10

Accession Score Description
1 ISPA_ECOLI 61 Farnesyl diphosphate synthase OS=Escherichia coli (strain K12) GN=ispA PE=1 SV=1
Page: 1 2 3 4 5 Next 

Not what you expected? Try the select summary.