Evidence map›Paper›PMID 25150219›Full record

ArticleJournal of cell science2014

NPHP4 controls ciliary trafficking of membrane proteins and large soluble proteins at the transition zone.

Junya Awata, Saeko Takada, Clive Standley, Karl F Lechtreck, Karl D Bellvé, Gregory J Pazour, Kevin E Fogarty, George B Witman

Abstract read
In one paragraph

Article in Journal of cell science, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
7.7field-weighted citation impact, top 2% 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

73 citing papers in PubMed, 93 citations in OpenAlex.

  1. Comparative Proteomics of Plasma and Flagellar Membranes inInternational journal of molecular sciences · 2026
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  16. Appearing and disappearing acts of cilia.Journal of biosciences · 2023
    Review
  17. Review
  18. Review
  19. Article
  20. Article

13 more citing papers are in PubMed but not listed here.

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

8 authors at 3 institutions in 1 country.

Junya AwataDepartment of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Saeko TakadaDepartment of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA.
Clive StandleyBiomedical Imaging Group, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Karl F LechtreckDepartment of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA Department of Cellular Biology, University of Georgia, Athens, GA 30602, USA.
Karl D BellvéBiomedical Imaging Group, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Gregory J PazourProgram in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Kevin E FogartyBiomedical Imaging Group, University of Massachusetts Medical School, Worcester, MA 01605, USA.
George B WitmanDepartment of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA George.Witman@umassmed.edu.
University of Massachusetts Chan Medical School · USUniversity of Georgia · USUniversity of Minnesota · US

Funding

Vermont INBRE Administrative Supplement 2024 AWD 118P20GM103449 · NIGMS · UNIVERSITY OF VERMONT & ST AGRIC COLLEGE · PI CHRISTOPHER S FRANCKLYN · 2012 to 2026
$58.4M
Intraflagellar Transport Proteins in MiceR01GM060992 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI Gregory J Pazour · 2001 to 2026
$10.3M
Flagellar Motility and AssemlbyR37GM030626 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI WITMAN, GEORGE B · 2007 to 2016
$6.3M
MOLECULAR MECHANISM OF FLAGELLAR MOTILITYR01GM030626 · NIGMS · WORCESTER FOUNDATION FOR BIOMEDICAL RES · PI WITMAN, GEORGE B · 1985 to 2006
$3.0M
NIGMS NIH HHS GM030626NIGMS NIH HHS GM060992NIGMS NIH HHS P20 GM103449NIGMS NIH HHS R01 GM030626NIGMS NIH HHS R01 GM060992NIGMS NIH HHS R37 GM030626
6 · The paper itself

Abstract

The protein nephrocystin-4 (NPHP4) is widespread in ciliated organisms, and defects in NPHP4 cause nephronophthisis and blindness in humans. To learn more about the function of NPHP4, we have studied it in Chlamydomonas reinhardtii. NPHP4 is stably incorporated into the distal part of the flagellar transition zone, close to the membrane and distal to CEP290, another transition zone protein. Therefore, these two proteins, which are incorporated into the transition zone independently of each other, define different domains of the transition zone. An nphp4-null mutant forms flagella with nearly normal length, ultrastructure and intraflagellar transport. When fractions from isolated wild-type and nphp4 flagella were compared, few differences were observed between the axonemes, but the amounts of certain membrane proteins were greatly reduced in the mutant flagella, and cellular housekeeping proteins >50 kDa were no longer excluded from mutant flagella. Therefore, NPHP4 functions at the transition zone as an essential part of a barrier that regulates both membrane and soluble protein composition of flagella. The phenotypic consequences of NPHP4 mutations in humans likely follow from protein mislocalization due to defects in the transition zone barrier.

Indexed as

Cell MovementChlamydomonas reinhardtiiCiliaFlagellaMembrane ProteinsProtein TransportMembrane ProteinsCEP290ChlamydomonasCiliaFlagellaNephrocystin-4Transition zone

Identifiers

PMID25150219
PMCPMC4215714
OpenAlexW2126339304

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.