Evidence map›Paper›PMID 21744797›Full record

ArticleBiochemistry2011

Analysis of chloroquine resistance transporter (CRT) isoforms and orthologues in S. cerevisiae yeast.

Nicholas K Baro, Chaya Pooput, Paul D Roepe

Abstract readComparative Study
In one paragraph

Article in Biochemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.5field-weighted citation impact, top 8% 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

23 citing papers in PubMed, 33 citations in OpenAlex.

  1. Biochemistry · 2026
    Article
  2. Article
  3. The collective creativity of Drs. Baro, Pooput, and Callaghan.Antimicrobial agents and chemotherapy · 2026
    Article
  4. Structures ofBiochemistry · 2023
    Article
  5. Article
  6. Molecular Mechanisms of Drug Resistance inAnnual review of microbiology · 2020
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Degrees of chloroquine resistance in Plasmodium - is the redox system involved?International journal for parasitology. Drugs and drug resistance · 2012
    Article
  20. 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 at 1 institution in 1 country.

Nicholas K BaroDepartment of Chemistry, and Center for Infectious Diseases, Georgetown University, 37th and O Streets, NW Washington, DC 20057, USA.
Chaya Pooput
Paul D Roepe
Georgetown University · US

Funding

The Function of Antimalarial Drug Resistance ProteinsR01AI056312 · NIAID · GEORGETOWN UNIVERSITY · PI PAUL D. ROEPE · 2003 to 2026
$7.5M
Inhibition of Malaria Chloroquine Resistance TransportersR56AI090832 · NIAID · SCRIPPS RESEARCH INSTITUTE, THE · PI CHANG, GEOFFREY A, FINN, M.G. · 2010 to 2010
$1.0M
NIAID NIH HHS AI056312NIAID NIH HHS AI090832NIAID NIH HHS R01 AI056312NIAID NIH HHS R56 AI090832
6 · The paper itself

Abstract

Previous work from our laboratory optimized MeOH-inducible expression of the P. falciparum malarial parasite transporter PfCRT in P. pastoris yeast. These strains are useful for many experiments but do not allow for inducible protein expression under ambient growth conditions. We have therefore optimized galactose-inducible expression of PfCRT in S. cerevisiae yeast. We find that expression of PfCRT confers CQ hypersensitivity to growing yeast and that this is due to plasma membrane localization of the transporter. We use quantitative analyses of growth rates to compare hypersensitivity for yeast expressing various PfCRT isoforms. We also report successful high level inducible expression of the P. vivax orthologue, PvCRT, and compare CQ hypersensitivity for PvCRT vs PfCRT expressing yeast. We test the hypothesis that hypersensitivity is due to increased transport of CQ into yeast expressing the transporters via direct (3)H-CQ transport experiments and analyze the effect that membrane potential has on transport. The data suggest important new tools for rapid functional screening of PfCRT and PvCRT isoforms and provide further evidence for a model wherein membrane potential promotes charged CQ transport by PfCRT. Data also support our previous conclusion that wild type PfCRT is capable of CQ transport and provide a basis for understanding the lack of correspondence between PvCRT mutations and resistance to CQ in the important malarial parasite P. vivax.

Indexed as

Gene Expression Regulation, FungalAnimalsAntimalarialsCell MembraneChloroquineGalactoseMembrane PotentialsMembrane Transport ProteinsPlasmodium falciparumPlasmodium vivaxProtein IsoformsProtozoan ProteinsSaccharomyces cerevisiaeAntimalarialsChloroquineGalactoseMembrane Transport ProteinsPfCRT protein, Plasmodium falciparumProtein IsoformsProtozoan Proteins

Identifiers

PMID21744797
PMCPMC3155940
OpenAlexW2030165969

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.