Evidence map›Paper›PMID 12941896›Full record

ArticleJournal of virology2003

Assembly of the herpes simplex virus capsid: identification of soluble scaffold-portal complexes and their role in formation of portal-containing capsids.

William W Newcomb, Darrell R Thomsen, Fred L Homa, Jay C Brown

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

48 citing papers in PubMed, 93 citations in OpenAlex.

  1. Oncolytic human herpesvirus for cancer therapy.Molecular biology reports · 2026
    Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Intranuclear HSV-1 DNA ejection induces major mechanical transformations suggesting mechanoprotection of nucleus integrity.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. Article
  11. Review
  12. Article
  13. Stunning symmetries involved in the self-assembly of the HSV-1 capsid.The journal of the Korean Physical Society · 2021
    Review
  14. Article
  15. Article
  16. Review
  17. Review
  18. EHV-1: A Constant Threat to the Horse Industry.Frontiers in microbiology · 2019
    Review
  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

4 authors at 1 institution in 1 country.

William W NewcombDepartment of Microbiology and Cancer Center, University of Virginia Health System, 1300 Jefferson Park Avenue, Charlottesville, VA 22908, USA.
Darrell R Thomsen
Fred L Homa
Jay C Brown
University of Virginia Health System · US

Funding

ASSEMBLY OF THE HERPES SIMPLEX VIRUS CAPSIDR01AI041644 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI BROWN, JAY CLARK · 1997 to 2012
$2.8M
Herpes Simplex Virus Capsid Assembly and DNA PackagingR01AI060836 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HOMA, FREDERICK L · 2006 to 2010
$1.6M
Assembly of the Herpes Simplex Virus CapsidR56AI041644 · NIAID · UNIVERSITY OF VIRGINIA · PI BROWN, JAY C. · 2007 to 2007
$354k
NIAID NIH HHS AI 41644NIAID NIH HHS R01 AI041644NIAID NIH HHS R01 AI060836NIAID NIH HHS R56 AI041644
6 · The paper itself

Abstract

The herpes simplex virus type 1 (HSV-1) portal complex is a ring-shaped structure located at a single vertex in the viral capsid. Composed of 12 U(L)6 protein molecules, the portal functions as a channel through which DNA passes as it enters the capsid. The studies described here were undertaken to clarify how the portal becomes incorporated as the capsid is assembled. We tested the idea that an intact portal may be donated to the growing capsid by way of a complex with the major scaffolding protein, U(L)26.5. Soluble U(L)26.5-portal complexes were found to assemble when purified portals were mixed in vitro with U(L)26.5. The complexes, called scaffold-portal particles, were stable during purification by agarose gel electrophoresis or sucrose density gradient ultracentrifugation. Examination of the scaffold-portal particles by electron microscopy showed that they resemble the 50- to 60-nm-diameter "scaffold particles" formed from purified U(L)26.5. They differed, however, in that intact portals were observed on the surface. Analysis of the protein composition by sodium dodecyl sulfate-polyacrylamide gel electrophoresis demonstrated that portals and U(L)26.5 combine in various proportions, with the highest observed U(L)6 content corresponding to two or three portals per scaffold particle. Association between the portal and U(L)26.5 was antagonized by WAY-150138, a small-molecule inhibitor of HSV-1 replication. Soluble scaffold-portal particles were found to function in an in vitro capsid assembly system that also contained the major capsid (VP5) and triplex (VP19C and VP23) proteins. Capsids that formed in this system had the structure and protein composition expected of mature HSV-1 capsids, including U(L)6, at a level corresponding to approximately 1 portal complex per capsid. The results support the view that U(L)6 becomes incorporated into nascent HSV-1 capsids by way of a complex with U(L)26.5 and suggest further that U(L)6 may be introduced into the growing capsid as an intact portal.

Indexed as

Virus AssemblyAnimalsCapsidCapsid ProteinsFemaleHerpesvirus 1, HumanMiceMice, Inbred BALB CMicroscopy, ElectronThioureaViral ProteinsCapsid ProteinsDNA cleavage and packaging proteins, Herpesvirusscaffold protein, Herpes simplex virus-1ThioureaViral ProteinsWAY-150138

Identifiers

PMID12941896
PMCPMC224603
OpenAlexW2160245006

What OpenQuestion holds

Textmetadata
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.