Eric W Deutsch

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..This resource could serve as an expandable repository for MS-derived proteome information...

..Similarly, such information is available for urinary bladder cell types...

..The lack of a consolidated platform to organize this massive resource hampers our ability, and that of others, to mine the information to its maximum potential...

..Immunohistochemical stains of prostate tissues from more than 50 patients were scored for informative CD antigen expression and compared with cell-type specific transcriptomes...

..Protein databases compiled from high quality empirical protein identifications that are in turn based on correct gene models increase the correctness, sensitivity, and quantitative accuracy of systems biology genome-scale experiments...

..The resulting compendium of peptides and their associated samples, proteins, and genes is made publicly available as a reference for future research on human plasma...

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..The full specification will soon be published as a version 1.0 proposal to the community, upon which a more full discussion must take place so that the final specification may be achieved with the involvement of the whole community...

..In this review, we provide an overview of the general analysis approaches, software tools, and repositories that are enabling successful proteomics research via tandem mass spectrometry...

..At the time of release, there already existed several implementations of the format and vendors have committed to supporting the format in their products...

..Here, we describe the PeptideAtlas Project, its contents and components, and show how together they provide a unique platform to select and validate mass spectrometry targets, thereby allowing the next revolution in proteomics...

..The PeptideAtlas resource is useful for experiment planning, improving genome annotation, and other data mining projects. PeptideAtlas has become especially useful for planning targeted proteomics experiments...

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..We have made this resource available via PeptideAtlas, a large, multiorganism, publicly accessible compendium of peptides identified in tandem MS experiments conducted by laboratories around the world...

..Further, PASSELwill help in the assessment of proteotypic peptide performance in a wide array of samples containing the same peptide, as well as across multiple experimental protocols...

..We highlight the use of this resource for data mining, construction of high quality lists for targeted proteomics, validation of proteins, and software development...

..To illustrate the use of MaRiMba, we used the tool to design and execute an MRM-MS experiment in which we targeted the proteins of a well-defined and previously published standard mixture...

..g. security versus speed). This means that an understanding of specific requirements and tradeoffs is necessary before selecting the access technology...

..This specification has benefited the consortium within which it was developed and is expected to benefit the wider research community. We welcome feedback from the scientific community to help improve our proposal...

..This method of spectral library searching is especially suited for targeted proteomics applications, offering superior performance to traditional sequence searching...

..The automation of this information extraction requires high throughput management and analysis of genomic expression data, and integration of these data with other data types...

..This method resulted in 6 times more peptide sequence identifications from a single LC-MS analysis of yeast than from shotgun peptide sequencing using LC-MS/MS...

..Here we present a summary of our process and details about the Human, Drosophila and Yeast PeptideAtlas builds...

..Using experimental validation, we illustrate the prevalence of overlapping genomic signals in archaeal transcription, casting doubt on the general perception of rigid boundaries between coding sequences and regulatory elements...

..It allows individual researchers to condense raw data into spectral libraries, summarizing information about observed proteomes into a concise and retrievable format for future data analyses...

..The work reported here demonstrates that de novo structure prediction is now a viable option for providing general function information for many proteins of unknown function...

..We used an established semantic distance measure that is based on the co-occurrence of disease and protein terms in the MEDLINE bibliographic database...

..We have also developed an accompanying suite of supporting programs. We expect that this format will facilitate data management, interpretation and dissemination in proteomics research...

..An increase of the threshold to p > or = 0.9 (corresponding to an error rate of less than 1%) resulted in 2,159 unique protein identifications (1,146, 1,235, and 1,318 for the Huh7, HFH, and HH4 cells, respectively)...

..Finally, as expected from the larger genome, H. marismortui encodes many more functions and seems to have fewer nutritional requirements for survival than does Halobacterium sp. NRC-1...

..Here we describe PeptideAtlas and associated methods for mining the data, as well as the software tools necessary to support large-scale integration and mining...

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..Therefore, despite identifying at least one proteotypic peptide for almost all proteins in the PA, a context-dependent selection of proteotypic peptides appears to be the most effective approach for targeted proteomics...

..Herein, the reader is instructed in the use of the Human Plasma PeptideAtlas through an illustrated exploration of cytokine receptors in plasma...

..We characterize these "PA-unseen" proteins in terms of tissue localization, transcript abundance, and Gene Ontology enrichment, and propose reasons for their absence from PeptideAtlas and strategies for detecting them in the future...

..Each mass spectrometer can generate data at an astonishingly high rate, and the scope of what is searched for is continually increasing. Therefore solutions for improving our ability to perform these searches are needed...

..A major finding from this study is the identification of novel isoforms and transcript variants not previously predicted from genome analysis...

..In this chapter, an overview of spectral library searching and the libraries currently available are presented...

..The resulting quantitative protein patterns enabled us to clearly define the subset of virulence proteins that is regulated upon plasma exposure...

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..These make explicit what data might be most usefully captured about proteomics experiments and provide complementary routes toward the implementation of a proteome repository...

..Finally the Molecular Interaction group discussed the development of a molecular interaction scoring system with accompanying gold standard data test sets...

..melanogaster gene models. This library of proteotypic peptides should enable fast, targeted and quantitative proteomic studies to elucidate the systems biology of this model organism...