Evidence map›Paper›PMID 24927598›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

An iron-regulated and glycosylation-dependent proteasomal degradation pathway for the plasma membrane metal transporter ZIP14.

Ningning Zhao, An-Sheng Zhang, Christal Worthen, Mitchell D Knutson, Caroline A Enns

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
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

36 citing papers in PubMed, 63 citations in OpenAlex.

  1. Trial
  2. Overlaps in mammalian iron and manganese homeostasis: recent advances.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Review
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  13. Members of the KCTD family are major regulators of cAMP signaling.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  14. Article
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  20. ZIP14 is degraded in response to manganese exposure.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2019
    Article
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 2 institutions in 1 country.

Ningning ZhaoDepartment of Cell and Developmental Biology, Oregon Health and Science University, Portland, OR 97239; and.
An-Sheng ZhangDepartment of Cell and Developmental Biology, Oregon Health and Science University, Portland, OR 97239; and.
Christal WorthenDepartment of Cell and Developmental Biology, Oregon Health and Science University, Portland, OR 97239; and.
Mitchell D KnutsonFood Science and Human Nutrition Department, University of Florida, Gainesville, FL 32611.
Caroline A EnnsDepartment of Cell and Developmental Biology, Oregon Health and Science University, Portland, OR 97239; and ennsca@ohsu.edu.
Oregon Health & Science University · USUniversity of Florida · US

Funding

ZIP Proteins and Iron MetabolismR01DK080706 · NIDDK · UNIVERSITY OF FLORIDA · PI KNUTSON, MITCHELL D · 2008 to 2022
$4.7M
Function of the hemochromatosis proteinR37DK054488 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI ENNS, CAROLINE · 2010 to 2019
$4.0M
Regulation and function of transferrin receptor 2R01DK072166 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI ENNS, CAROLINE · 2005 to 2017
$3.7M
Program in Molecular and Cellular BiosciencesT32GM071338 · NIGMS · OREGON HEALTH & SCIENCE UNIVERSITY · PI MASLEN, CHERYL L · 2005 to 2020
$3.5M
FUNCTION OF THE HEMOCHROMATOSIS PROTEINR01DK054488 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI ENNS, CAROLINE · 2000 to 2009
$3.1M
Functional investigation of hemojuvelin in regulation of hepcidin expressionR01DK080765 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI ZHANG, AN-SHENG · 2008 to 2011
$913k
NIDDK NIH HHS DK054488NIDDK NIH HHS DK072166NIDDK NIH HHS DK080706NIDDK NIH HHS DK080765NIDDK NIH HHS R01 DK054488NIDDK NIH HHS R01 DK072166NIDDK NIH HHS R01 DK080706NIDDK NIH HHS R01 DK080765NIDDK NIH HHS R37 DK054488NIGMS NIH HHS GM071338-08NIGMS NIH HHS T32 GM071338
6 · The paper itself

Abstract

Protein degradation is instrumental in regulating cellular function. Plasma membrane proteins targeted for degradation are internalized and sorted to multivesicular bodies, which fuse with lysosomes, where they are degraded. ZIP14 is a newly identified iron transporter with multitransmembrane domains. In an attempt to dissect the molecular mechanisms by which iron regulates ZIP14 levels, we found that ZIP14 is endocytosed, extracted from membranes, deglycosylated, and degraded by proteasomes. This pathway did not depend on the retrograde trafficking to the endoplasmic reticulum and thus did not involve the well-defined endoplasmic reticulum-associated protein degradation pathway. Iron inhibited membrane extraction of internalized ZIP14, resulting in higher steady-state levels of ZIP14. Asparagine-linked (N-linked) glycosylation of ZIP14, particularly the glycosylation at N102, was required for efficient membrane extraction of ZIP14 and therefore is necessary for its iron sensitivity. These findings highlight the importance of proteasomes in the degradation of endocytosed plasma membrane proteins.

Indexed as

ProteolysisCation Transport ProteinsCell MembraneEndocytosisGlycosylationHep G2 CellsHumansIronProteasome Endopeptidase ComplexProtein Structure, TertiaryCation Transport ProteinsIronProteasome Endopeptidase ComplexSLC39A14 protein, humanhereditary hemochromatosisSLC39A14

Identifiers

PMID24927598
PMCPMC4078863
OpenAlexW2016059249

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.