Evidence map›Paper›PMID 27159024›Full record

ArticleACS chemical biology2016

Structure-Function Analyses of a Staphylococcus epidermidis Autoinducing Peptide Reveals Motifs Critical for AgrC-type Receptor Modulation.

Tian Yang, Yftah Tal-Gan, Alexandra E Paharik, Alexander R Horswill, Helen E Blackwell

Open access · greenAbstract read
In one paragraph

Article in ACS chemical biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

40 citing papers in PubMed, 54 citations in OpenAlex.

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  12. Chemical and biomolecular insights into theIsrael journal of chemistry · 2023
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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 at 3 institutions in 1 country.

Tian YangDepartment of Chemistry, University of Wisconsin-Madison , 1101 University Ave., Madison, Wisconsin 53706, United States.
Yftah Tal-GanDepartment of Chemistry, University of Nevada, Reno , 1664 N. Virginia St., Reno, Nevada 89557, United States.
Alexandra E PaharikDepartment of Microbiology, University of Iowa Carver College of Medicine , 431 Newton Rd., Iowa City, Iowa 52242, United States.
Alexander R HorswillDepartment of Microbiology, University of Iowa Carver College of Medicine , 431 Newton Rd., Iowa City, Iowa 52242, United States.
Helen E BlackwellDepartment of Chemistry, University of Wisconsin-Madison , 1101 University Ave., Madison, Wisconsin 53706, United States.
University of Iowa · USUniversity of Wisconsin–Madison · USUniversity of Nevada, Reno · US

Funding

Vector Core-Core 2P30DK054759 · NIDDK · UNIVERSITY OF IOWA · PI Alejandro Antonio Pezzulo · 1998 to 2026
$30.5M
BIOTECHNOLOGY TRAINING PROGRAMT32GM008349 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI FOX, BRIAN G · 1989 to 2019
$22.5M
Synthetic Ligands for Modulating Bacterial CommunicationR01GM109403 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI BLACKWELL, HELEN E. · 2014 to 2017
$1.2M
QExactive (Orbitrap) mass spectrometerS10OD020022 · OD · UNIVERSITY OF WISCONSIN-MADISON · PI VESTLING, MARTHA M · 2015 to 2015
$483k
Quorum Sensing Dependent Interactions with Biofilms and Innate Immunity DefensesI01BX002711 · VA · VA EASTERN COLORADO HEALTH CARE SYSTEM · PI ALEXANDER R HORSWILL · 2015 to 2026
–
BLRD VA I01 BX002711NIDDK NIH HHS P30 DK054759NIGMS NIH HHS R01 GM109403NIGMS NIH HHS T32 GM008349NIH HHS S10 OD020022
6 · The paper itself

Abstract

Staphylococcus epidermidis is frequently implicated in human infections associated with indwelling medical devices due to its ubiquity in the skin flora and formation of robust biofilms. The accessory gene regulator (agr) quorum sensing (QS) system plays a prominent role in the establishment of biofilms and infection by this bacterium. Agr activation is mediated by the binding of a peptide signal (or autoinducing peptide, AIP) to its cognate AgrC receptor. Many questions remain about the role of QS in S. epidermidis infections, as well as in mixed-microbial populations on a host, and chemical modulators of its agr system could provide novel insights into this signaling network. The AIP ligand provides an initial scaffold for the development of such probes; however, the structure-activity relationships (SARs) for activation of S. epidermidis AgrC receptors by AIPs are largely unknown. Herein, we report the first SAR analyses of an S. epidermidis AIP by performing systematic alanine and d-amino acid scans of the S. epidermidis AIP-I. On the basis of these results, we designed and identified potent, pan-group inhibitors of the AgrC receptors in the three S. epidermidis agr groups, as well as a set of AIP-I analogs capable of selective AgrC inhibition in either specific S. epidermidis agr groups or in another common staphylococcal species, S. aureus. In addition, we uncovered a non-native peptide agonist of AgrC-I that can strongly inhibit S. epidermidis biofilm growth. Together, these synthetic analogs represent new and readily accessible probes for investigating the roles of QS in S. epidermidis colonization and infections.

Indexed as

Bacterial ProteinsPeptidesProtein KinasesStaphylococcus epidermidisStructure-Activity RelationshipAgrC protein, StaphylococcusBacterial ProteinsPeptidesProtein Kinases

Identifiers

PMID27159024
PMCPMC4946969
OpenAlexW2345891497

What OpenQuestion holds

Textmetadata
LicenceTDM
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.