Evidence map›Paper›PMID 23973327›Full record

ArticleMolecular cell2013

Chaperone Nap1 shields histone surfaces used in a nucleosome and can put H2A-H2B in an unconventional tetrameric form.

Sheena D'Arcy, Kyle W Martin, Tanya Panchenko, Xu Chen, Serge Bergeron, Laurie A Stargell, Ben E Black, Karolin Luger

Open access · bronzeAbstract read
In one paragraph

Article in Molecular cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

51 citing papers in PubMed, 85 citations in OpenAlex.

  1. Article
  2. Histone Variant H2A.Z Enhances Histone and Nucleosome Dynamics.Molecular & cellular proteomics : MCP · 2026
    Article
  3. Article
  4. State-of-the-Art and Future Directions in Structural Proteomics.Molecular & cellular proteomics : MCP · 2025
    Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Profile of Karolin Luger.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  11. Review
  12. NAP1-Related Protein 1 (NRP1) has multiple interaction modes for chaperoning histones H2A-H2B.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

8 authors at 3 institutions in 1 country.

Sheena D'ArcyHoward Hughes Medical Institute, Colorado State University, Fort Collins, CO 80523, USA. Electronic address: sheena.darcy@colostate.edu.
Kyle W Martin
Tanya Panchenko
Xu Chen
Serge Bergeron
Laurie A Stargell
Ben E Black
Karolin Luger
Colorado State University · USHoward Hughes Medical Institute · USUniversity of Pennsylvania · US

Funding

project 3P01GM088409 · NIGMS · COLORADO STATE UNIVERSITY · PI NYBORG, JENNIFER K. · 2010 to 2014
$7.3M
STRUCTURAL BIOLOGY TRAINING PROGRAMT32GM008275 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI WAND, A. JOSHUA · 1988 to 2018
$6.0M
Structure and Function of Nucleosome Assembly Protein 1R01GM067777 · NIGMS · UNIVERSITY OF COLORADO · PI LUGER, KAROLIN · 2003 to 2015
$3.7M
Centromere Identity and FunctionR01GM082989 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI BLACK, BEN E. · 2008 to 2018
$3.6M
Howard Hughes Medical InstituteNIGMS NIH HHS GM067777NIGMS NIH HHS GM08275NIGMS NIH HHS GM082989NIGMS NIH HHS P01 GM088409NIGMS NIH HHS P01- GM088409NIGMS NIH HHS R01 GM067777NIGMS NIH HHS R01 GM082989NIGMS NIH HHS T32 GM008275
6 · The paper itself

Abstract

The histone H2A-H2B heterodimer is an integral component of the nucleosome. The cellular localization and deposition of H2A-H2B into chromatin is regulated by numerous factors, including histone chaperones such as nucleosome assembly protein 1 (Nap1). We use hydrogen-deuterium exchange coupled to mass spectrometry to characterize H2A-H2B and Nap1. Unexpectedly, we find that at low ionic strength, the α helices in H2A-H2B are frequently sampling partially disordered conformations and that binding to Nap1 reduces this conformational sampling. We identify the interaction surface between H2A-H2B and Nap1 and confirm its relevance both in vitro and in vivo. We show that two copies of H2A-H2B bound to a Nap1 homodimer form a tetramer with contacts between H2B chains similar to those in the four-helix bundle structural motif. The organization of the complex reveals that Nap1 competes with histone-DNA and interhistone interactions observed in the nucleosome, thereby regulating the availability of histones for chromatin assembly.

Indexed as

Binding SitesChromatin Assembly and DisassemblyDeuterium Exchange MeasurementDNA, FungalHistone ChaperonesHistonesNucleosome Assembly Protein 1NucleosomesOsmolar ConcentrationProtein ConformationProtein FoldingProtein MultimerizationProtein StabilitySaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSolutionsDNA, FungalHistone ChaperonesHistonesNAP1 protein, S cerevisiaeNucleosome Assembly Protein 1NucleosomesSaccharomyces cerevisiae ProteinsSolutions

Identifiers

PMID23973327
PMCPMC3878309
OpenAlexW1976993726

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.