Evidence map›Paper›PMID 28612124›Full record

ArticleEuropean biophysics journal : EBJ2018

Distribution of dipeptides in different protein structural classes: an effort to find new similarities.

Mahin Ghadimi, Emran Heshmati, Khosrow Khalifeh

Abstract read
PubMed Publisher
In one paragraph

Article in European biophysics journal : EBJ, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Review
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

3 authors.

Mahin GhadimiDepartment of Biology, Faculty of Science, University of Zanjan, University Blvd, Zanjan, Islamic Republic of Iran.
Emran HeshmatiDepartment of Biology, Faculty of Science, University of Zanjan, University Blvd, Zanjan, Islamic Republic of Iran. heshmati@znu.ac.ir.
Khosrow KhalifehDepartment of Biology, Faculty of Science, University of Zanjan, University Blvd, Zanjan, Islamic Republic of Iran. khalifeh@znu.ac.ir.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Finding any regularity in the sequences of proteins and determining their correlation with structural features are of great interest for an understanding of molecular biology. We statistically analyzed the relative frequencies of all 400 possible dipeptides in a data set containing randomly selected proteins of different defined structural classes including all-alpha, all-beta, alpha + beta and alpha/beta families. We found that the distribution of dipeptides is not the same for different structural classes, and some of them are significantly far from a random distribution. A tendency of a given amino acid to localize in the first or second position of a dipeptide depending on the structural class of protein was also found. Interestingly, some amino acids may be substituted for each other in the first or second positions of specific dipeptides in each structural class. This finding apparently contrasts with the routine expectation from the viewpoint of amino acid properties, as classically understood.

Indexed as

Computational BiologyAmino Acid SequenceDipeptidesProteinsDipeptidesProteinsDipeptideProteinRandom distributionRegularityStructural class

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.