Evidence map›Paper›PMID 28747677›Full record

ArticleScientific reports2017

Comprehensive analysis of human protein N-termini enables assessment of various protein forms.

Jeonghun Yeom, Shinyeong Ju, YunJin Choi, Eunok Paek, Cheolju Lee

Abstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Jeonghun YeomCenter for Theragnosis, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
Shinyeong JuCenter for Theragnosis, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
YunJin ChoiDepartment of Computer Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
Eunok PaekDepartment of Computer Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea.ORCID 0000-0003-3655-9749
Cheolju LeeCenter for Theragnosis, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea. clee270@kist.re.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Various forms of protein (proteoforms) are generated by genetic variations, alternative splicing, alternative translation initiation, co- or post-translational modification and proteolysis. Different proteoforms are in part discovered by characterizing their N-terminal sequences. Here, we introduce an N-terminal-peptide-enrichment method, Nrich. Filter-aided negative selection formed the basis for the use of two N-blocking reagents and two endoproteases in this method. We identified 6,525 acetylated (or partially acetylated) and 6,570 free protein N-termini arising from 5,727 proteins in HEK293T human cells. The protein N-termini included translation initiation sites annotated in the UniProtKB database, putative alternative translational initiation sites, and N-terminal sites exposed after signal/transit/pro-peptide removal or unknown processing, revealing various proteoforms in cells. In addition, 46 novel protein N-termini were identified in 5' untranslated region (UTR) sequence with pseudo start codons. Our data showing the observation of N-terminal sequences of mature proteins constitutes a useful resource that may provide information for a better understanding of various proteoforms in cells.

Indexed as

Epithelial CellsHEK293 CellsHumansProtein IsoformsProtein Isoforms

Identifiers

PMID28747677
PMCPMC5529458

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.