منابع مشابه
Clustering millions of tandem mass spectra.
Tandem mass spectrometry (MS/MS) experiments often generate redundant data sets containing multiple spectra of the same peptides. Clustering of MS/MS spectra takes advantage of this redundancy by identifying multiple spectra of the same peptide and replacing them with a single representative spectrum. Analyzing only representative spectra results in significant speed-up of MS/MS database search...
متن کاملTANDEM: matching proteins with tandem mass spectra.
SUMMARY Tandem mass spectra obtained from fragmenting peptide ions contain some peptide sequence specific information, but often there is not enough information to sequence the original peptide completely. Several proprietary software applications have been developed to attempt to match the spectra with a list of protein sequences that may contain the sequence of the peptide. The application TA...
متن کاملHigh Mass Accuracy Phosphopeptide Identification Using Tandem Mass Spectra
Phosphoproteomics is a powerful analytical platform for identification and quantification of phosphorylated peptides and assignment of phosphorylation sites. Bioinformatics tools to identify phosphorylated peptides from their tandem mass spectra and protein sequence databases are important part of phosphoproteomics. In this work, we discuss general informatics aspects of mass-spectrometry-based...
متن کاملAutomatic Quality Assessment of Peptide Tandem Mass Spectra
MOTIVATION A powerful proteomics methodology couples high-performance liquid chromatography (HPLC) with tandem mass spectrometry and database-search software, such as SEQUEST. Such a set-up, however, produces a large number of spectra, many of which are of too poor quality to be useful. Hence a filter that eliminates poor spectra before the database search can significantly improve throughput a...
متن کاملDirect Maximization of Protein Identifications from Tandem Mass Spectra*□S
The goal of many shotgun proteomics experiments is to determine the protein complement of a complex biological mixture. For many mixtures, most methodological approaches fall significantly short of this goal. Existing solutions to this problem typically subdivide the task into two stages: first identifying a collection of peptides with a low false discovery rate and then inferring from the pept...
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ژورنال
عنوان ژورنال: Journal of Proteome Research
سال: 2008
ISSN: 1535-3893,1535-3907
DOI: 10.1021/pr070361e