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Journal ArticleDOI

Identification of cross-linked peptides from complex samples

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TLDR
pLink as mentioned in this paper is a software for data analysis of cross-linked proteins coupled with mass-spectrometry analysis, which is compatible with multiple homo- or hetero-bifunctional cross-linkers.
Abstract
pLink, software for data analysis of cross-linked proteins coupled with mass spectrometry, estimates false discovery rate and enables analysis of protein complexes without extensive purification. We have developed pLink, software for data analysis of cross-linked proteins coupled with mass-spectrometry analysis. pLink reliably estimates false discovery rate in cross-link identification and is compatible with multiple homo- or hetero-bifunctional cross-linkers. We validated the program with proteins of known structures, and we further tested it on protein complexes, crude immunoprecipitates and whole-cell lysates. We show that it is a robust tool for protein-structure and protein-protein–interaction studies.

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Journal ArticleDOI

Protein Analysis by Shotgun/Bottom-up Proteomics

TL;DR: The progress of proteomics has been driven by the development of new technologies for peptide/protein separation, mass spectrometry analysis, isotope labeling for quantification, and bioinformatics data analysis.
Journal ArticleDOI

Proteome-wide profiling of protein assemblies by cross-linking mass spectrometry

TL;DR: An integrated workflow that robustly identifies cross-links from endogenous protein complexes in human cellular lysates is described, based on the application of mass spectrometry (MS)-cleavable cross-linkers, sequential collision-induced dissociation (CID)–tandem MS (MS/MS) and electron-transfer Dissociation (ETD)-MS/ MS acquisitions, and a dedicated search engine, XlinkX.
References
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Journal ArticleDOI

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TL;DR: In this paper, the authors describe methods for the isolation, complementation and mapping of mutants of Caenorhabditis elegans, a small free-living nematode worm.
Journal Article

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Daniel S. Brenner, +1 more
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Journal ArticleDOI

A large nucleolar U3 ribonucleoprotein required for 18S ribosomal RNA biogenesis

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Journal ArticleDOI

90S Pre-Ribosomes Include the 35S Pre-rRNA, the U3 snoRNP, and 40S Subunit Processing Factors but Predominantly Lack 60S Synthesis Factors

TL;DR: It is concluded that the 40S synthesis machinery predominately associates with the 35S pre-rRNA factors, whereas factors required for 60S subunit synthesis largely bind later, showing an unexpected dichotomy in binding.
Journal ArticleDOI

Identification of cross-linked peptides from large sequence databases

TL;DR: It is shown that xQuest can identify cross-linked peptides from a total Escherichia coli lysate with an unrestricted database search and reduces the search space by an upstream candidate-peptide search before the recombination step.
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