[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

TitleCryo-ET reveals the architecture of the polar tube invasion apparatus from microsporidian parasites.
Journal, issue, pagesbioRxiv, Year 2024
Publish dateJul 13, 2024
AuthorsMahrukh Usmani / Nicolas Coudray / Margot Riggi / Rishwanth Raghu / Harshita Ramchandani / Daija Bobe / Mykhailo Kopylov / Ellen D Zhong / Janet H Iwasa / Damian C Ekiert / Gira Bhabha
PubMed AbstractMicrosporidia are divergent fungal pathogens that employ a harpoon-like apparatus called the polar tube (PT) to invade host cells. The PT architecture and its association with neighboring organelles ...Microsporidia are divergent fungal pathogens that employ a harpoon-like apparatus called the polar tube (PT) to invade host cells. The PT architecture and its association with neighboring organelles remain poorly understood. Here, we use cryo-electron tomography to investigate the structural cell biology of the PT in dormant spores from the human-infecting microsporidian species, . Segmentation and subtomogram averaging of the PT reveal at least four layers: two protein-based layers surrounded by a membrane, and filled with a dense core. Regularly spaced protein filaments form the structural skeleton of the PT. Combining cryo-electron tomography with cellular modeling, we propose a model for the 3-dimensional organization of the polaroplast, an organelle that is continuous with the membrane layer that envelops the PT. Our results reveal the ultrastructure of the microsporidian invasion apparatus , laying the foundation for understanding infection mechanisms.
External linksbioRxiv / PubMed:39026755 / PubMed Central
MethodsEM (subtomogram averaging)
Resolution20.0 - 70.0 Å
Structure data

EMDB-45671: Subtomogram average of the Polar Tube Outer Filament layer from Encephalitozoon intestinalis microsporidian spores
Method: EM (subtomogram averaging) / Resolution: 36.0 Å

EMDB-45672: Subtomogram average of the Polar Tube Inner Filament layer from Encephalitozoon intestinalis microsporidian spores
Method: EM (subtomogram averaging) / Resolution: 20.0 Å

EMDB-45673: Subtomogram average of the Polar Tube Outer Filament Layer and Inner Filament layer from Encephalitozoon intestinalis microsporidian spores
Method: EM (subtomogram averaging) / Resolution: 44.0 Å

EMDB-45674: Subtomogram average of a whole Polar Tube cross-section from Encephalitozoon intestinalis microsporidian spores
Method: EM (subtomogram averaging) / Resolution: 70.0 Å

Source
  • Encephalitozoon intestinalis (fungus)

+
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