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Other literature type . 2019
Data sources: PubMed Central
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ZENODO; Journal of Proteome Research
Article . 2019 . Peer-reviewed
License: STM Policy #29
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2018 YPIC Challenge: A case study in characterizing an unknown protein sample

Authors: Lindsay K. Pino; Andy Lin; Wout Bittremieux;

2018 YPIC Challenge: A case study in characterizing an unknown protein sample

Abstract

For the 2018 YPIC Challenge, contestants were invited to try to decipher two unknown English questions encoded by a synthetic protein expressed in Escherichia coli. In addition to deciphering the sentence, contestants were asked to determine the three-dimensional structure and detect any post-translation modifications left by the host organism. We present our experimental and computational strategy to characterize this sample by identifying the unknown protein sequence and detecting the presence of post-translational modifications. The sample was acquired with dynamic exclusion disabled to increase the signal-to-noise ratio of the measured molecules, after which spectral clustering was used to generate high-quality consensus spectra. De novo spectrum identification was used to determine the synthetic protein sequence, and any post-translational modifications introduced by E. coli on the synthetic protein were analyzed via spectral networking. This workflow resulted in a de novo sequence coverage of 70%, on par with sequence database searching performance. Additionally, the spectral networking analysis indicated that no systematic modifications were introduced on the synthetic protein by E. coli. The strategy presented here can be directly used to analyze samples for which no protein sequence information is available or when the identity of the sample is unknown. All software and code to perform the bioinformatics analysis is available as open source, and self-contained Jupyter notebooks are provided to fully recreate the analysis. This document is the unedited Author's version of a Submitted Work that was subsequently accepted for publication in the Journal of Proteome Research, copyright © American Chemical Society after peer review. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-gV4SwwddkH9NagGMX6bP.

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Belgium
Subjects by Vocabulary

Microsoft Academic Graph classification: Computer science Computational biology Proteomics Protein sequencing Sequence (medicine) Sequence database Spectral clustering Identification (information) Workflow DECIPHER

Keywords

Proteomics, Biochemistry, Article, Sequence Analysis, Protein, Tandem Mass Spectrometry, Escherichia coli, Amino Acid Sequence, Biology, Computer. Automation, Computational Biology, Proteins, General Chemistry, Chemistry, Protein Biosynthesis, Human medicine, Peptides, Protein Processing, Post-Translational, Software

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    5
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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download
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
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