Evidence map›Paper›PMID 11266471›Full record

ArticleThe Journal of cell biology2001

Distinct protein sorting and localization to premelanosomes, melanosomes, and lysosomes in pigmented melanocytic cells.

G Raposo, D Tenza, D M Murphy, J F Berson, M S Marks

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 224 papers.

0numbers the graph read from it
0cells of the map it votes in
224citing 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

224 citing papers in PubMed, 452 citations in OpenAlex.

  1. SLC16A6 is a tyrosine transporter for the melanosome.bioRxiv : the preprint server for biology · 2026
    Article
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  3. Melanomas (amelanotic type) in albino rats.Journal of toxicologic pathology · 2026
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164 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

G RaposoCurie Institute, Research Section, Paris, 7505 France.
D Tenza
D M Murphy
J F Berson
M S Marks
University of Pennsylvania · US

Funding

IMMUNOBIOLOGY OF NORMAL AND NEOPLASTIC LYMPHOCYTEST32CA009140 · NCI · UNIVERSITY OF PENNSYLVANIA · PI Malay Haldar, WARREN S PEAR · 1985 to 2026
$16.1M
MELANOSOME PROTEIN SORTING, FOLDING &ANTIGEN PROCESSINGR01EY012207 · NEI · UNIVERSITY OF PENNSYLVANIA · PI MARKS, MICHAEL S · 1998 to 2002
$718k
NCI NIH HHS T32 CA009140NCI NIH HHS T32 CA-09140NEI NIH HHS R01 EY-12207
6 · The paper itself

Abstract

Melanosomes and premelanosomes are lysosome-related organelles with a unique structure and cohort of resident proteins. We have positioned these organelles relative to endosomes and lysosomes in pigmented melanoma cells and melanocytes. Melanosome resident proteins Pmel17 and TRP1 localized to separate vesicular structures that were distinct from those enriched in lysosomal proteins. In immunogold-labeled ultrathin cryosections, Pmel17 was most enriched along the intralumenal striations of premelanosomes. Increased pigmentation was accompanied by a decrease in Pmel17 and by an increase in TRP1 in the limiting membrane. Both proteins were largely excluded from lysosomal compartments enriched in LAMP1 and cathepsin D. By kinetic analysis of fluid phase uptake and immunogold labeling, premelanosomal proteins segregated from endocytic markers within an unusual endosomal compartment. This compartment contained Pmel17, was accessed by BSA-gold after 15 min, was acidic, and displayed a cytoplasmic planar coat that contained clathrin. Our results indicate that premelanosomes and melanosomes represent a distinct lineage of organelles, separable from conventional endosomes and lysosomes within pigmented cells. Furthermore, they implicate an unusual clathrin-coated endosomal compartment as a site from which proteins destined for premelanosomes and lysosomes are sorted.

Indexed as

Clathrin-Coated VesiclesEndocytosisEndosomesgp100 Melanoma AntigenLysosomal Storage DiseasesLysosomesMelanocytesMelanosomesMembrane GlycoproteinsModels, BiologicalNeoplasm ProteinsOrganellesProteinsProtein Sorting SignalsProtein Transportgp100 Melanoma AntigenMembrane GlycoproteinsNeoplasm ProteinsProteinsProtein Sorting Signals

Identifiers

PMID11266471
PMCPMC2195785
OpenAlexW2106782182

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.