Evidence map›Paper›PMID 31697912›Full record

ArticleArchives of biochemistry and biophysics2019

Transmembrane 163 (TMEM163) protein effluxes zinc.

Vanessa B Sanchez, Saima Ali, Adrian Escobar, Math P Cuajungco

Open access · hybridAbstract read
In one paragraph

Article in Archives of biochemistry and biophysics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
3.3field-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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
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  13. Functional Study ofCells · 2022
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  17. Emerging cellular themes in leukodystrophies.Frontiers in cell and developmental biology · 2022
    Review
  18. Article
  19. Review
  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

4 authors at 1 institution in 1 country.

Vanessa B SanchezDepartment of Biological Science, California State University, Fullerton, CA, 92831, USA.
Saima AliDepartment of Biological Science, California State University, Fullerton, CA, 92831, USA.
Adrian EscobarDepartment of Biological Science, California State University, Fullerton, CA, 92831, USA.
Math P CuajungcoDepartment of Biological Science, California State University, Fullerton, CA, 92831, USA; Center for Applied Biotechnology Studies, California State University, Fullerton, CA, 92831, USA. Electronic address: mcuajungco@fullerton.edu.
California State University, Fullerton · US

Funding

MARC PROGRAM FOR CALIFORNIA STATE UNIVERSITY, FULLERTONT34GM008612 · NIGMS · CALIFORNIA STATE UNIVERSITY FULLERTON · PI COHEN, AMYBETH · 1996 to 2021
$7.4M
DISSECTING THE ROLE OF TMEM163 PROTEIN IN CELLSR15NS101594 · NINDS · CALIFORNIA STATE UNIVERSITY FULLERTON · PI CUAJUNGCO, MATH P · 2017 to 2020
$777k
NIGMS NIH HHS T34 GM008612NINDS NIH HHS R15 NS101594
6 · The paper itself

Abstract

Recent investigations of rodent Tmem163 suggest that it binds to and transports zinc as a dimer, and that alanine mutagenesis of its two species-conserved aspartate (D123A/D127A) residues proposed to bind zinc, perturbs protein function. Direct corroboration, however, is lacking whether it is an influx or efflux transporter in cells. We hypothesized that human TMEM163 is a zinc effluxer based on its predicted protein characteristics. We used cultured human cell lines that either stably or transiently expressed TMEM163, and pre-loaded the cells with zinc to determine transport activity. We found that TMEM163-expressing cells exhibited significant reduction of intracellular zinc levels as evidenced by two zinc-specific fluorescent dyes and radionuclide zinc-65. The specificity of the fluorescence signal was confirmed upon treatment with TPEN, a high-affinity zinc chelator. Multiple sequence alignment and phylogenetic analyses showed that TMEM163 is related to distinct members of the cation diffusion facilitator (CDF) protein family. To further characterize the efflux function of TMEM163, we substituted alanine in two homologous aspartate residues (D124A/D128A) and performed site-directed mutagenesis of several conserved amino acid residues identified as non-synonymous single nucleotide polymorphism (S61R, S95C, S193P, and E286K). We found a significant reduction of zinc efflux upon cellular expression of D124A/D128A or E286K protein variant when compared with wild-type, suggesting that these particular amino acids are important for normal protein function. Taken together, our findings demonstrate that TMEM163 effluxes zinc, and it should now be designated ZNT11 as a new member of the mammalian CDF family of zinc efflux transporters.

Indexed as

Amino Acid SequenceAnimalsCation Transport ProteinsCell MembraneHEK293 CellsHeLa CellsHumansMembrane ProteinsMiceMutation, MissenseSequence AlignmentZincCation Transport ProteinsMembrane ProteinsTMEM163 protein, humanZincCation diffusion facilitatorSingle nucleotide polymorphismSV31Zinc transporterZnT protein

Identifiers

PMID31697912
PMCPMC6864316
OpenAlexW2987429112

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.