Cited by 157Metabolism and Genetic DisordersDrug Transport and Resistance MechanismsPeroxisome Proliferator-Activated Receptors

A Saccharomyces cerevisiae homolog of the human adrenoleukodystrophy transporter is a heterodimer of two half ATP-binding cassette transporters.

Open access
Shani, N, Valle, D·1996·Proceedings of the National Academy of Sciences

Abstract

The adrenoleukodystrophy protein (ALDP) and the 70-kDa peroxisomal membrane protein (PMP70) are half ATP-binding cassette (ABC) transporters in the human peroxisome membrane. ALDP and PMP70 share sequence homology and both are implicated in genetic diseases. PXA1 and YKL741 are Saccharomyces cerevisiae genes that encode homologs of ALDP and PMP70. Pxa1p, a putative ortholog of ALDP, is involved in peroxisomal beta-oxidation of fatty acids while YKL741 is an open reading frame found by the yeast genome sequencing project. Here we designate YKL741 as PXA2 and show that its protein product, Pxa2p, like Pxa1p, is associated with peroxisomes but not required for their assembly. Yeast strains carrying gene disruption of PXA1, PXA2, or both have similar and, in the case of the latter, nonadditive phenotypes. We also find that the stability of Pxa1p, but not Pxa2p, is markedly reduced in the absence of the other. Finally, we find that Pxa1p and Pxa2p coimmuno-precipitate. These genetic and physical data suggest that Pxa1p and Pxa2p heterodimerize to form a complete peroxisomal ABC transporter involved in fatty acid beta-oxidation. This result predicts the presence of similar heterodimeric ABC transporters in the mammalian peroxisome membrane.

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 · 10.1073/pnas.93.21.11901

Cites

42 of 42 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?

  • In Saccharomyces cerevisiae, the two orthologs of ALDP, Pxa1p and Pxa2p, heterodimerize to form a functional ABC transporter.

    “In the yeast Saccharomyces cerevisiae the two orthologs of ALDP, Pxa1p, and Pxa2p, heterodimerize to form a functional ABC transporter [Shani and Valle, 1996].”

    From ABCD1 mutations and the X-linked adrenoleukodystrophy mutation database: Role in diagnosis and clinical correlations (2001) · cites this paper as Shani and Valle, 1996

    The paper’s opening text says Pxa1p and Pxa2p heterodimerize to form a yeast peroxisomal ABC transporter involved in fatty-acid β-oxidation. But the Discussion identifies Pxa1p as a putative ortholog of ALDP and suggests Pxa2p may instead be the yeast ortholog of PMP70. It does not support calling both proteins orthologs of ALDP. (LLM, conf=0.91)

    Experimental — accuracy not yet measured

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

Research works printed but not linked: 4

  1. [8]Lombard-Platet, G., Savary, S., Sarde, C.-O. & Mandel, J.-L. (1996) Proc. Natl. Acad. Sci. USA 93, 1265–1269.
  2. [9]Moser, H., Smith, K. & Moser, A. (1995) in The Metabolic and Molecular Bases of Inherited Disease, eds. Scriver, C., Beaudet, A., Sly, W. & Valle, D. (McGraw–Hill, New York), pp. 2325–2349.
  3. [16]Shani, N., Watkins, P. A. & Valle, D. (1995) Proc. Natl. Acad. Sci. USA 92, 6012–6016.
  4. [18]Èrdmann, R., Veenhuis, D., Mertens, D. & Kunau, W. H. (1989) Proc. Natl. Acad. Sci. USA 86, 5419–5423.

Cited by

Sorted by citations

Authors
Shani, N., & Valle, D.
Affiliations
Kennedy Krieger Institute (US)
Venue
Proceedings of the National Academy of Sciences
Published
1996-10-15
Volume
93
Issue
21
Pages
11901-11906
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2055737079
Cited by
157
References
42
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 3 · 2021: 1 · 2020: 5 · 2019: 3 · 2018: 2 · 2017: 1 · 2016: 3 · 2015: 6 · 2014: 2 · 2013: 6 · 2012: 3
FWCI
8.35
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (HD10981)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD-10981, P01HD010981)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
PMP70, peroxisomal membrane proteins, peroxisomal beta-oxidation, fatty acid beta-oxidation, protein stability, protein-protein interaction, Saccharomyces cerevisiae, peroxisome biogenesis
MeSH terms
ATP Binding Cassette Transporter, Subfamily D, Member 1, Adenosine Triphosphate, Fungal Proteins, Genes, Fungal, Humans, Membrane Proteins, Microbodies, Protein Binding, Saccharomyces cerevisiae, Transcription, Genetic, Open Reading Frames, ATP-Binding Cassette Transporters, Saccharomyces cerevisiae Proteins

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