NDLI: A computational tool to detect and avoid redundancy in selected reaction monitoring.

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A computational tool to detect and avoid redundancy in selected reaction monitoring.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Röst, Hannes Malmström, Lars Aebersold, Ruedi
Description	Country affiliation: Switzerland Author Affiliation: Röst H ( Department of Biology, Institute of Molecular Systems Biology, ETH Zurich, Zurich CH 8093, Switzerland.)
Abstract	Selected reaction monitoring (SRM), also called multiple reaction monitoring, has become an invaluable tool for targeted quantitative proteomic analyses, but its application can be compromised by nonoptimal selection of transitions. In particular, complex backgrounds may cause ambiguities in SRM measurement results because peptides with interfering transitions similar to those of the target peptide may be present in the sample. Here, we developed a computer program, the SRMCollider, that calculates nonredundant theoretical SRM assays, also known as unique ion signatures (UIS), for a given proteomic background. We show theoretically that UIS of three transitions suffice to conclusively identify 90% of all yeast peptides and 85% of all human peptides. Using predicted retention times, the SRMCollider also simulates time-scheduled SRM acquisition, which reduces the number of interferences to consider and leads to fewer transitions necessary to construct an assay. By integrating experimental fragment ion intensities from large scale proteome synthesis efforts (SRMAtlas) with the information content-based UIS, we combine two orthogonal approaches to create high quality SRM assays ready to be deployed. We provide a user friendly, open source implementation of an algorithm to calculate UIS of any order that can be accessed online at http://www.srmcollider.org to find interfering transitions. Finally, our tool can also simulate the specificity of novel data-independent MS acquisition methods in Q1-Q3 space. This allows us to predict parameters for these methods that deliver a specificity comparable with that of SRM. Using SRM interference information in addition to other sources of information can increase the confidence in an SRM measurement. We expect that the consideration of information content will become a standard step in SRM assay design and analysis, facilitated by the SRMCollider.
File Format	HTM / HTML
ISSN	15359476
e-ISSN	15359484
DOI	10.1074/mcp.M111.013045
Journal	Molecular & Cellular Proteomics
Issue Number	8
Volume Number	11
Language	English
Publisher	American Society for Biochemistry and Molecular Biology
Publisher Date	2012-08-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Proteomics Peptides Proteome Proteomics Amino Acid Sequence Computer Simulation Mass Spectrometry Molecular Sequence Data Nitrogen Isotopes Reproducibility Of Results Saccharomyces Cerevisiae Metabolism Saccharomyces Cerevisiae Proteins
Content Type	Text
Resource Type	Article
Subject	Medicine Analytical Chemistry Molecular Biology Biochemistry

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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