The Peptides Profile view lists all peptide sequence identifications in descending order of confidence.
Click on a peptide sequence to view the tandem mass spectra and ion assignments for that peptide.
Use the filter box to limit the table listing to the peptides with the string entered. For example, start typing some part of a peptide sequence to narrow the list. You can also filter on modification masses which were included in the search. For example, type 42 to filter on acetylated or tri-methylated peptides, or type 79 or 98 to filter on phosphopeptides.
The columns in the peptide profile table are:
Scan - the mass spectrometer scan event number.
log E-value - the base 10 log of the expectation score for the peptide. More negative numbers are better. A minimum cutoff of 0.01 (log transformed to -2) is usually applied. Lower values are better. A score of -2 corresponds to a 1 in 100 chance of the assignment occurring by chance.
Intensity - the base 10 log of the area under the curve of the peak corresponding to this peptide.
m + h - the mass of the peptide, plus hydrogen.
delta - the mass difference between the theoretical and experimentally measured masses of the peptide.
z - the charge state of the peptide.
RT (min) - the retention time, in minutes, of the peak apex corresponding to this peptide.
sequence - the amino acid sequence of the identified peptide, plus four flanking amino acids at each terminii and the protein sequence index positions.
Algorithm - the search algorithm which made the identification.
External Links - link outs to PIR's PepMatch and Repository queries for this peptide. Use PepMatch to see which organisms are known to have this peptide. Use REPO to see which public tandem mass spectrometry respoitories have this peptide.