Evidence map›Paper›PMID 32220325›Full record

ArticleCurrent biology : CB2020

Selecting for Altered Substrate Specificity Reveals the Evolutionary Flexibility of ATP-Binding Cassette Transporters.

Sriram Srikant, Rachelle Gaudet, Andrew W Murray

Open access · hybridAbstract read
In one paragraph

Article in Current biology : CB, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.4field-weighted citation impact, top 16% 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

15 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Determinants of metal import and specificity in a bacterial transporter.bioRxiv : the preprint server for biology · 2026
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  12. Prevalence ofMicroorganisms · 2022
    Article
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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

3 authors at 1 institution in 1 country.

Sriram SrikantDepartment of Molecular and Cellular Biology, Harvard University, 52 Oxford Street, Cambridge, MA 02138, USA.
Rachelle GaudetDepartment of Molecular and Cellular Biology, Harvard University, 52 Oxford Street, Cambridge, MA 02138, USA. Electronic address: gaudet@mcb.harvard.edu.
Andrew W MurrayDepartment of Molecular and Cellular Biology, Harvard University, 52 Oxford Street, Cambridge, MA 02138, USA. Electronic address: awm@mcb.harvard.edu.
Harvard University · US

Funding

FEEDBACK CONTROL OF THE CELL CYCLER01GM043987 · NIGMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MURRAY, ANDREW W · 1990 to 2023
$6.4M
Mechanism of Divalent Metal Transport by NRamp-Family TransportersR01GM120996 · NIGMS · HARVARD UNIVERSITY · PI GAUDET, RACHELLE · 2017 to 2024
$3.0M
Howard Hughes Medical InstituteNIGMS NIH HHS R01 GM043987NIGMS NIH HHS R01 GM120996
6 · The paper itself

Abstract

ATP-binding cassette (ABC) transporters are the largest family of ATP-hydrolyzing transporters, which import or export substrates across membranes, and have members in every sequenced genome. Structural studies and biochemistry highlight the contrast between the global structural similarity of homologous transporters and the enormous diversity of their substrates. How do ABC transporters evolve to carry such diverse molecules and what variations in their amino acid sequence alter their substrate selectivity? We mutagenized the transmembrane domains of a conserved fungal ABC transporter that exports a mating pheromone and selected for mutants that export a non-cognate pheromone. Mutations that alter export selectivity cover a region that is larger than expected for a localized substrate-binding site. Individual selected clones have multiple mutations, which have broadly additive contributions to specific transport activity. Our results suggest that multiple positions influence substrate selectivity, leading to alternative evolutionary paths toward selectivity for particular substrates and explaining the number and diversity of ABC transporters.

Indexed as

Evolution, MolecularAscomycotaATP-Binding Cassette TransportersFungal ProteinsGene Expression Regulation, FungalMutationProtein ConformationReproductionSubstrate SpecificityATP-Binding Cassette TransportersFungal ProteinsABC transporterautocrine selectionfungal matingpheromone transporterprotein evolutionrandom mutagenesisSaccharomyces cerevisiaesubstrate selectivityYarrowia lipolytica

Identifiers

PMID32220325
PMCPMC7243462
OpenAlexW3013572561

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.