Evidence map›Paper›PMID 19828632›Full record

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

The specificity of trimming of MHC class I-presented peptides in the endoplasmic reticulum.

Arron Hearn, Ian A York, Kenneth L Rock

Open access · greenAbstract 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 64 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

64 citing papers in PubMed, 1 synthesis or guideline pooled it, 102 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Review
  5. Controlling intracellular processing to enhance spherical nucleic acid immune stimulation.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  10. The identification of two M20B family peptidases required for full virulence inFrontiers in cellular and infection microbiology · 2023
    Article
  11. Review
  12. Article
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  14. Article
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4 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

3 authors at 2 institutions in 1 country.

Arron HearnDepartment of Pathology, University of Massachusetts Medical School, Worcester, MA 01655, USA.
Ian A York
Kenneth L Rock
University of Massachusetts Chan Medical School · USMichigan State University · US

Funding

PILOT AND FEASIBILITY PROGRAMP30DK032520 · NIDDK · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI CZECH, MICHAEL P · 1986 to 2010
$14.6M
IMMUNOBIOLOGY OF CTL RESPONSES TO EXOGENOUS ANTIGENSR01AI043543 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI ROCK, KENNETH L · 1999 to 2013
$5.1M
IMMUNOLOGY OF MHC RESTRICTION OF T CELLSR01AI020248 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI ROCK, KENNETH L · 1985 to 2013
$2.0M
NIAID NIH HHS R01 AI020248NIAID NIH HHS R01 AI043543NIDDK NIH HHS P30 DK032520
6 · The paper itself

Abstract

Aminopeptidases in the endoplasmic reticulum (ER) can cleave antigenic peptides and in so doing either create or destroy MHC class I-presented epitopes. However, the specificity of this trimming process overall and of the major ER aminopeptidase ERAP1 in particular is not well understood. This issue is important because peptide trimming influences the magnitude and specificity of CD8 T cell responses. By systematically varying the N-terminal flanking sequences of peptides in a cell-free biochemical system and in intact cells, we elucidated the specificity of ERAP1 and of ER trimming overall. ERAP1 can cleave after many amino acids on the N terminus of epitope precursors but does so at markedly different rates. The specificity seen with purified ERAP1 is similar to that observed for trimming and presentation of epitopes in the ER of intact cells. We define N-terminal sequences that are favorable or unfavorable for Ag presentation in ways that are independent from the epitopes core sequence. When databases of known presented peptides were analyzed, the residues that were preferred for the trimming of model peptide precursors were found to be overrepresented in N-terminal flanking sequences of epitopes generally. These data define key determinants in the specificity of Ag processing.

Indexed as

Adenovirus E3 ProteinsAminopeptidasesAnimalsAntigen PresentationChlorocebus aethiopsCOS CellsEndoplasmic ReticulumHeLa CellsHistocompatibility Antigens Class IHumansImmunodominant EpitopesMinor Histocompatibility AntigensPeptide FragmentsProtein PrecursorsAdenovirus E3 ProteinsAminopeptidasesE3 glycoprotein 19k, Adenovirus type 7ERAP1 protein, humanHistocompatibility Antigens Class IImmunodominant EpitopesMinor Histocompatibility AntigensPeptide FragmentsProtein Precursors

Identifiers

PMID19828632
PMCPMC2855122
OpenAlexW1848498255

What OpenQuestion holds

Textmetadata
LicenceTDM
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.