Evidence map›Paper›PMID 22822203›Full record

ArticleThe Plant cell2012

Cyclic peptides arising by evolutionary parallelism via asparaginyl-endopeptidase-mediated biosynthesis.

Joshua S Mylne, Lai Yue Chan, Aurelie H Chanson, Norelle L Daly, Hanno Schaefer, Timothy L Bailey, Philip Nguyencong, Laura Cascales, David J Craik

Open access · bronzeAbstract read
In one paragraph

Article in The Plant cell, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
6.7field-weighted citation impact, top 2% of its field
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

61 citing papers in PubMed, 153 citations in OpenAlex.

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1 more citing papers are in PubMed but not listed here.

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

9 authors at 2 institutions in 2 countries.

Joshua S MylneInstitute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia.
Lai Yue Chan
Aurelie H Chanson
Norelle L Daly
Hanno Schaefer
Timothy L Bailey
Philip Nguyencong
Laura Cascales
David J Craik
University of Queensland · AUHarvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cyclic miniprotein Momordica cochinchinensis Trypsin Inhibitor II (MCoTI-II) (34 amino acids) is a potent trypsin inhibitor (TI) and a favored scaffold for drug design. We have cloned the corresponding genes and determined that each precursor protein contains a tandem series of cyclic TIs terminating with the more commonly known, and potentially ancestral, acyclic TI. Expression of the precursor protein in Arabidopsis thaliana showed that production of the cyclic TIs, but not the terminal acyclic TI, depends on asparaginyl endopeptidase (AEP) for maturation. The nature of their repetitive sequences and the almost identical structures of emerging TIs suggest these cyclic peptides evolved by internal gene amplification associated with recruitment of AEP for processing between domain repeats. This is the third example of similar AEP-mediated processing of a class of cyclic peptides from unrelated precursor proteins in phylogenetically distant plant families. This suggests that production of cyclic peptides in angiosperms has evolved in parallel using AEP as a constraining evolutionary channel. We believe this is evolutionary evidence that, in addition to its known roles in proteolysis, AEP is especially suited to performing protein cyclization.

Indexed as

Amino Acid SequenceArabidopsisAsparaginyl EndopeptidaseCyclotidesCysteine EndopeptidasesCystine-Knot MiniproteinsDNA, PlantEvolution, MolecularGene AmplificationModels, MolecularMolecular Sequence DataMomordicaPeptides, CyclicPhylogenyProtein ConformationProtein Structure, TertiaryAsparaginyl EndopeptidaseCyclotidesCysteine EndopeptidasesCystine-Knot MiniproteinsDNA, PlantPeptides, Cyclictrypsin inhibitor MCoTI-II

Identifiers

PMID22822203
PMCPMC3426113
OpenAlexW2145983591

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.