Cited by 82Cellular transport and secretionAutophagy in Disease and TherapyCalcium signaling and nucleotide metabolism

The novel endosomal membrane protein Ema interacts with the class C Vps–HOPS complex to promote endosomal maturation

Open access
Kim, Sungsu, Wairkar, Yogesh P., Daniels, Richard W., DiAntonio, Aaron·2010·Journal of Cell Biology

Abstract

Endosomal maturation is critical for accurate and efficient cargo transport through endosomal compartments. Here we identify a mutation of the novel Drosophila gene, ema (endosomal maturation defective) in a screen for abnormal synaptic overgrowth and defective protein trafficking. Ema is an endosomal membrane protein required for trafficking of fluid-phase and receptor-mediated endocytic cargos. In the ema mutant, enlarged endosomal compartments accumulate as endosomal maturation fails, with early and late endosomes unable to progress into mature degradative late endosomes and lysosomes. Defective endosomal down-regulation of BMP signaling is responsible for the abnormal synaptic overgrowth. Ema binds to and genetically interacts with Vps16A, a component of the class C Vps–HOPS complex that promotes endosomal maturation. The human orthologue of ema, Clec16A, is a candidate susceptibility locus for autoimmune disorders, and its expression rescues the Drosophila mutant demonstrating conserved function. Characterizing this novel gene family identifies a new component of the endosomal pathway and provides insights into class C Vps–HOPS complex function.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1083/jcb.200911126

Cites

69 of 69 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The Drosophila CLEC16A homolog ema is required for efficient recruitment of the Golgi complex protein Lava lamp (Lva) to autophagic structures in fat body cells.

    “The Drosophila CLEC16A homolog ema is required for efficient recruitment of the Golgi complex protein Lava lamp (Lva) to autophagic structures in fat body cells”

    From Clec16a is Critical for Autolysosome Function and Purkinje Cell Survival (2016) · cites this paper as [47]

    The Results section, “Ema orthologues are functionally conserved” (page unavailable), identifies human CLEC16A as an orthologue of Drosophila ema. The paper also lists a Lava lamp antibody in Materials and methods, but the retrieved Results passages concern endosomal maturation in garland cells, not Lva recruitment to autophagic structures in fat body cells. The claim’s central recruitment finding is therefore unsupported by our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The phenotype of flies mutant in ema can be complemented by expression of human or mouse CLEC16A.

    “the phenotype of flies mutant in ema can be complemented by expression of human or mouse CLEC16A”

    From Clec16a is Critical for Autolysosome Function and Purkinje Cell Survival (2016) · cites this paper as [47]

    The Results section, “Ema orthologues are functionally conserved” (page unavailable), reports that expression of human CLEC16A rescues lethality and other phenotypes in ema-mutant flies. The paper does not report a rescue experiment using mouse CLEC16A, so the mouse portion of the claim is unsupported. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • ema is required for proper endosomal maturation in Garland cells.

    “and for proper endosomal maturation in Garland cells947.”
  • The function of CLEC16A is highly conserved.

    “indicating that the function of this protein is highly conserved47.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kim, S., Wairkar, Y. P., Daniels, R. W., & DiAntonio, A.
Affiliations
  • Department of Developmental Biology, Washington University in St. Louis, St. Louis, MO 63110
  • Washington University in St. Louis (US)
Corresponding author
DiAntonio, Aaron
Venue
Journal of Cell Biology
Published
2010-03-01
Volume
188
Issue
5
Pages
717-734
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2014895591
Cited by
82
References
69
Citations by year
2026: 2 · 2025: 5 · 2024: 5 · 2023: 2 · 2022: 5 · 2021: 5 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 6 · 2016: 5 · 2015: 9 · 2014: 5 · 2013: 13 · 2012: 7
FWCI
3.64
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion, cc-by-nc-sa)
Funders
  • National Institutes of Health
  • National Institute on Drug Abuse (DA020812, R01DA020812)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
endosomal maturation, EMA, CLEC16A, BMP signaling, lysosomal biogenesis, Drosophila, protein trafficking
MeSH terms
Animals, Drosophila melanogaster, Humans, Intracellular Membranes, Molecular Sequence Data, Monosaccharide Transport Proteins, Neuromuscular Junction, Plant Proteins, Endosomes, Recombinant Fusion Proteins, Synapses, Bone Morphogenetic Proteins, Two-Hybrid System Techniques, Drosophila Proteins, Vesicular Transport Proteins, Lectins, C-Type, Multiprotein Complexes

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review