Evidence map›Paper›PMID 19342661›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2009

N-glycosylation enhances presentation of a MHC class I-restricted epitope from tyrosinase.

Marina Ostankovitch, Michelle Altrich-Vanlith, Valentina Robila, Victor H Engelhard

Open access · bronzeAbstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

18 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. The immunology of vitiligo.Nature reviews. Immunology · 2026
    Review
  3. Review
  4. Review
  5. The Role of Glycosylation in Inflammatory Diseases.Advances in experimental medicine and biology · 2021
    Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. An antigenic peptide produced by reverse splicing and double asparagine deamidation.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
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

4 authors at 2 institutions in 1 country.

Marina OstankovitchDepartment of Microbiology, Carter Immunology Center, University of Virginia, Charlottesville, VA 22908, USA.
Michelle Altrich-Vanlith
Valentina Robila
Victor H Engelhard
University of Virginia · USCarter Center · US

Funding

Antigenic Determinants on HLA-B7 and -A2R01CA134060 · NCI · UNIVERSITY OF VIRGINIA · PI ENGELHARD, VICTOR H · 2008 to 2012
$2.4M
ANTIGENIC DETERMINANTS ON HLA-B7 AND -A2R01AI020963 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI ENGELHARD, VICTOR H · 1985 to 2006
$1.8M
ANTIGENIC DETERMINENTS ON HLA-B7 AND HLA-A2R37AI020963 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI ENGELHARD, VICTOR H. · 1994 to 2001
$653k
NCI NIH HHS R01 CA134060NIAID NIH HHS AI20963NIAID NIH HHS AI33134NIAID NIH HHS R01 AI020963NIAID NIH HHS R37 AI020963
6 · The paper itself

Abstract

We recently demonstrated that the mechanism of processing of an HLA-A*0201-restricted peptide epitope, Tyr(369)(D), derived from the membrane protein tyrosinase, involves retrotranslocation of glycosylated molecules from the endoplasmic reticulum to the cytosol, removal of an N-linked carbohydrate from Asn(371) by peptide N-glycanase, proteolysis by the proteasome and other proteases, and retransport of the resulting peptides into the endoplasmic reticulum for association with HLA-A*0201. Carbohydrate removal results in deamidation of Asn(371) to aspartic acid. The asparagine-containing homolog of this peptide, Tyr(369)(N), is not presented by tyrosinase-expressing cells, and this has been presumed to be due to quantitative glycosylation of Asn(371). Although examining cytosolic intermediates that accumulated in human melanoma cells treated with proteasome inhibitors, we were surprised to find both molecules that had been deglycosylated by peptide N-glycanase and a large number of molecules that had not been previously glycosylated. The failure of Tyr(369)(N) to be processed and presented from these latter molecules may be partially due to a process of deamidation independent of glycosylation. However, we also established that proteasomes degrade tyrosinase molecules that are still glycosylated, giving rise to a set of discrete intermediates that are not observed when unglycosylated molecules are degraded. We propose that Tyr(369)(N) fails to be presented because unglycosylated tyrosinase is degraded rapidly and relatively nonselectively. In contrast, glycosylation alters the selectivity of tyrosinase processing by the proteasome, enhancing the production or survival of Tyr(369)(D).

Indexed as

Antigen PresentationCell LineEpitopesGene Expression Regulation, NeoplasticGlycosylationHistocompatibility Antigens Class IHumansMelanomaMonophenol MonooxygenaseMutationProteasome Endopeptidase ComplexSubstrate SpecificityTransgenesEpitopesHistocompatibility Antigens Class IMonophenol MonooxygenaseProteasome Endopeptidase Complex

Identifiers

PMID19342661
PMCPMC2859980
OpenAlexW1781392077

What OpenQuestion holds

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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.