Proteomics

Dataset Information

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Combining high resolution and exact calibration to boost statistical power: A well-calibrated score function for high-resolution MS2


ABSTRACT: This project reanalzyes data from 4 other projects. Information about the samples can be found in the following four publications. The four samples used in this study include a ocean metaproteome sample, a human sample, a E. coli sample, and a Plamodium falciparum sample. B. N. Pease, E. L. Huttlin, M. P. Jedrychowski, E. Talevich, J. Harmon, T. Dillman, N. Kannan, C. Doerig, R. Chakrabarti, S. P. Gygi, and D. Chakrabarti. Global analysis of protein expression and phosphorylation of three stages of Plasmodium falciparum intraerythrocytic development. Journal of Proteome Research, 12:4028–4045, 2013. Damon H. May, Emma Timmins-Schiffman, Molly P. Mikan, H. Rodger Harvey, Elhanan Borenstein, Brook L. Nunn, and William S. Noble. An alignment-free metapeptide strategy for metaproteomic characterization of microbiome samples using shotgun metagenomic sequencing. Journal of Proteome Research, 15(8):2697–2705, 2016. PMID: 27396978. M. Kim, S. M. Pinto, D. Getnet, R. S. Nirujogi, S. S. Manda, R. Chaerkady, A. K. Madugundu, D. S. Kelkar, R. Isserlin, S. Jain, et al. A draft map of the human proteome. Nature, 509(7502):575–581, 2014. Hansjrg G ̋tzke, Claudio Muheim, A.F. Maarten Altelaar, Albert J.R. Heck, Gianluca Maddalo, and Daniel O. Daley. Identification of putative substrates for the periplasmic chaperone yfgm in Escherichia coli using quantitative proteomics. Molecular & Cellular Proteomics, 14(1):216–226, 2015.

INSTRUMENT(S): LTQ Orbitrap Velos, Q Exactive

ORGANISM(S): Homo Sapiens (human) Escherichia Coli Plasmodium Falciparum (isolate 3d7)

SUBMITTER: Andy Lin  

LAB HEAD: William Stafford Noble

PROVIDER: PXD009265 | Pride | 2018-09-19

REPOSITORIES: Pride

Dataset's files

Source:
Action DRS
2016_Jan_12_QE2_51.mzML Mzml
2016_Jan_12_QE2_51.mzXML Mzxml
Adult_Adrenalgland_Gel_Elite_49_f01.mzML Mzml
Adult_Adrenalgland_Gel_Elite_49_f01.raw Raw
OR6_19022013_GM_SU_Ecoli_Mix1_DyfgM_fr21.mzML Mzml
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Publications

Combining High-Resolution and Exact Calibration To Boost Statistical Power: A Well-Calibrated Score Function for High-Resolution MS2 Data.

Lin Andy A   Howbert J Jeffry JJ   Noble William Stafford WS  

Journal of proteome research 20181018 11


To achieve accurate assignment of peptide sequences to observed fragmentation spectra, a shotgun proteomics database search tool must make good use of the very high-resolution information produced by state-of-the-art mass spectrometers. However, making use of this information while also ensuring that the search engine's scores are well calibrated, that is, that the score assigned to one spectrum can be meaningfully compared to the score assigned to a different spectrum, has proven to be challeng  ...[more]

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