[English] 日本語
Yorodumi Papers
- Database of articles cited by EMDB/PDB/SASBDB data -

+
Search query

Keywords
Structure methods
Author
Journal
IF

-
Structure paper

TitleStructural basis of Q-dependent antitermination.
Journal, issue, pagesProc Natl Acad Sci U S A, Vol. 116, Issue 37, Page 18384-18390, Year 2019
Publish dateSep 10, 2019
AuthorsZhou Yin / Jason T Kaelber / Richard H Ebright /
PubMed AbstractLambdoid bacteriophage Q protein mediates the switch from middle to late bacteriophage gene expression by enabling RNA polymerase (RNAP) to read through transcription terminators preceding ...Lambdoid bacteriophage Q protein mediates the switch from middle to late bacteriophage gene expression by enabling RNA polymerase (RNAP) to read through transcription terminators preceding bacteriophage late genes. Q loads onto RNAP engaged in promoter-proximal pausing at a Q binding element (QBE) and adjacent sigma-dependent pause element (SDPE) to yield a Q-loading complex, and Q subsequently translocates with RNAP as a pausing-deficient, termination-deficient Q-loaded complex. Here, we report high-resolution structures of 4 states on the pathway of antitermination by Q from bacteriophage 21 (Q21): Q21, the Q21-QBE complex, the Q21-loading complex, and the Q21-loaded complex. The results show that Q21 forms a torus, a "nozzle," that narrows and extends the RNAP RNA-exit channel, extruding topologically linked single-stranded RNA and preventing the formation of pause and terminator hairpins.
External linksProc Natl Acad Sci U S A / PubMed:31455742 / PubMed Central
MethodsEM (single particle) / X-ray diffraction
Resolution1.942 - 3.8 Å
Structure data

20233

6p18

EMDB-20233, PDB-6p18:
Q21 transcription antitermination complex: loading complex
Method: EM (single particle) / Resolution: 3.5 Å

20234

6p19

EMDB-20234, PDB-6p19:
Q21 transcription antitermination complex: loaded complex
Method: EM (single particle) / Resolution: 3.8 Å

PDB-6p1a:
Transcription antitermination factor Q21 in complex with Q21-binding-element DNA
Method: X-RAY DIFFRACTION / Resolution: 2.837 Å

PDB-6p1b:
Transcription antitermination factor Q21
Method: X-RAY DIFFRACTION / Resolution: 1.942 Å

PDB-6p1c:
Transcription antitermination factor Q21, SeMet-derivative
Method: X-RAY DIFFRACTION / Resolution: 2.005 Å

Chemicals

ChemComp-ZN:
Unknown entry

ChemComp-MG:
Unknown entry

ChemComp-EDO:
1,2-ETHANEDIOL

ChemComp-CL:
Unknown entry

ChemComp-HOH:
WATER

Source
  • escherichia coli (E. coli)
  • phage 21 (virus)
  • escherichia coli (strain k12) (bacteria)
KeywordsGENE REGULATION / RNA polymerase / DNA Binding / transcription / Q-dependent antitermination / Q antiterminator factor / Q antitermination factor

+
About Yorodumi Papers

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi Papers

Database of articles cited by EMDB/PDB/SASBDB data

  • Database of articles cited by EMDB, PDB, and SASBDB entries
  • Using PubMed data

Related info.:EMDB / PDB / SASBDB / Yorodumi / EMN Papers / Changes in new EM Navigator and Yorodumi

Read more