[English] 日本語
EMN Papers
- Database of articles cited by 3DEM data entries -

+
Search query

Keywords
Author
Journal
IF

-
Structure paper

TitleThe structure of a 15-stranded actin-like filament from Clostridium botulinum.
Journal, issue, pagesNat Commun, Vol. 10, Issue 1, Page 2856-2856, Year 2019
Publish dateJun 28, 2019
AuthorsFujiet Koh / Akihiro Narita / Lin Jie Lee / Kotaro Tanaka / Yong Zi Tan / Venkata P Dandey / David Popp / Robert C Robinson /
PubMed AbstractMicrofilaments (actin) and microtubules represent the extremes in eukaryotic cytoskeleton cross-sectional dimensions, raising the question of whether filament architectures are limited by protein ...Microfilaments (actin) and microtubules represent the extremes in eukaryotic cytoskeleton cross-sectional dimensions, raising the question of whether filament architectures are limited by protein fold. Here, we report the cryoelectron microscopy structure of a complex filament formed from 15 protofilaments of an actin-like protein. This actin-like ParM is encoded on the large pCBH Clostridium botulinum plasmid. In cross-section, the ~26 nm diameter filament comprises a central helical protofilament surrounded by intermediate and outer layers of six and eight twisted protofilaments, respectively. Alternating polarity of the layers allows for similar lateral contacts between each layer. This filament design is stiffer than the actin filament, and has likely been selected for during evolution to move large cargos. The comparable sizes of microtubule and pCBH ParM filaments indicate that larger filament architectures are not limited by the protomer fold. Instead, function appears to have been the evolutionary driving force to produce broad, complex filaments.
External linksPubMed:31253774 / Publisher's page
KeywordsSTRUCTURAL PROTEIN / Actin ParM / PROTEIN FIBRIL / ParM / filaments / cytoskeleton
MethodsX-ray diffraction / EM (helical sym.)
Resolution3.253 - 4.7 A
Structure data

PDB-6ixw:
pCBH ParM non-polymerisable quadruple mutant

PDB-6izr:
Whole structure of a 15-stranded ParM filament from Clostridium botulinum

PDB-6izv:
Averaged strand structure of a 15-stranded ParM filament from Clostridium botulinum

EMDB-9757:
Whole structure of a 15-stranded ParM filament from Clostridium botulinum

EMDB-9758:
Averaged strand structure of a 15-stranded ParM filament from Clostridium botulinum

Chemicals

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATEAdenosine diphosphate

ChemComp-MG:
MAGNESIUM IONMagnesium

Source
  • Clostridium botulinum Prevot_594 (bacteria)
  • Clostridium botulinum F str. 230613 (bacteria)

+
About EMN Papers

-
News

-
Jul 5, 2019. Downlodablable text data

Downlodablable text data

  • Some data of EM Navigator services can be downloaded as text file. Software such as Excel can load the data files.
    PageデータFormat
    EMN Searchsearch resultCSV, TSV, or JSON
    EMN statisticsdata tableCSV or TSV

Related info.: EMN Search / EMN Statistics

-
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. (see PDBe EMDB page)
  • 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 at PDBe / Contact to PDBj

+
Feb 20, 2018. PDBj/BINDS workshop in Osaka University

PDBj/BINDS workshop in Osaka University

    +
    Oct 4, 2017. Three pioneers of this field were awarded Nobel Prize in Chemistry 2017

    Three pioneers of this field were awarded Nobel Prize in Chemistry 2017

    • Jacques Dubochet (University of Lausanne, Switzerland) is a pioneer of ice-embedding method of EM specimen (as known as cryo-EM), Most of 3DEM structures in EMDB and PDB are obtained using his method.
    • Joachim Frank (Columbia University, New York, USA) is a pioneer of single particle reconstruction, which is the most used reconstruction method for 3DEM structures in EMDB and EM entries in PDB. And also, he is a develper of Spider, which is one of the most famous software in this field, and is used for some EM Navigor data (e.g. map projection/slice images).
    • Richard Henderson (MRC Laboratory of Molecular Biology, Cambridge, UK) was determined the first biomolecule structure by EM. The first EM entry in PDB, PDB-1brd is determinedby him.

    External links: The 2017 Nobel Prize in Chemistry - Press Release

    +
    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. See below links for details.
    • 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

    Read more

    -
    EMN Papers

    Database of articles cited by 3DEM data entries

    • Database of articles cited by 3DEM data entries in EMDB and PDB
    • Using PubMed data

    Related info.: EMDB / PDB / Q: What is the data source of EM Navigator? / EM Navigator / Yorodumi Papers / Changes in new EM Navigator and Yorodumi

    Read more