8RBS image
Deposition Date 2023-12-04
Release Date 2023-12-20
Last Version Date 2024-04-24
Entry Detail
PDB ID:
8RBS
Keywords:
VIRUS
Title:
Emiliania huxleyi virus 201 (EhV-201) asymmetrical unit of capsid proteins predicted by AlphaFold2 fitted into the cryo-EM density of EhV-201 virion composite map.
Biological Source:
Source Organism:
Emiliania huxleyi virus 201 (Taxon ID: 181210)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
18.00 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SUBTOMOGRAM AVERAGING
8RBS validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Major capsid protein
Gene (Uniprot):EPVG_00083
Chain IDs:A (auth: A1), B (auth: A2), C (auth: A3), D (auth: A4), E (auth: A5), F (auth: A6), G (auth: A7), H (auth: A8), I (auth: A9), J (auth: B1), K (auth: B2), L (auth: B3), M (auth: B4), N (auth: B5), O (auth: B6), P (auth: B7), Q (auth: B8), R (auth: B9), S (auth: C1), T (auth: C2), U (auth: C3), V (auth: C4), W (auth: C5), X (auth: C6), Y (auth: C7), Z (auth: C8), AA (auth: C9), BA (auth: D1), CA (auth: D2), DA (auth: D3), EA (auth: D4), FA (auth: D5), GA (auth: D6), HA (auth: D7), IA (auth: D8), JA (auth: D9), KA (auth: E1), LA (auth: E2), MA (auth: E3), NA (auth: E4), OA (auth: E5), PA (auth: E6), QA (auth: E7), RA (auth: E8), SA (auth: E9), TA (auth: F1), UA (auth: F2), VA (auth: F3), WA (auth: F4), XA (auth: F5), YA (auth: F6), ZA (auth: F7), AB (auth: F8), BB (auth: F9), CB (auth: G1), DB (auth: G2), EB (auth: G3), FB (auth: G4), GB (auth: G5), HB (auth: G6), IB (auth: G7), JB (auth: G8), KB (auth: G9), LB (auth: H1), MB (auth: H2), NB (auth: H3), OB (auth: H4), PB (auth: H5), QB (auth: H6), RB (auth: H7), SB (auth: H8), TB (auth: H9), UB (auth: I1), VB (auth: I2), WB (auth: I3), XB (auth: I4), YB (auth: I5), ZB (auth: I6), AC (auth: I7), BC (auth: I8), CC (auth: I9), DC (auth: J1), EC (auth: J2), FC (auth: J3)
Chain Length:496
Number of Molecules:84
Biological Source:Emiliania huxleyi virus 201
UniProt ID:G9E4T6 Pfam ID:PF16903, PF04451
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Penton protein
Gene (Uniprot):EhV201
Chain IDs:GC (auth: K)
Chain Length:663
Number of Molecules:1
Biological Source:Emiliania huxleyi virus 201
UniProt ID:Q4A2T2
Ligand Molecules
NA
Primary Citation
Structure and replication cycle of a virus infecting climate-modulating alga Emiliania huxleyi.
Sci Adv 10 eadk1954 eadk1954 (2024)
PMID: 38598627 DOI: 10.1126/sciadv.adk1954

Abstact

The globally distributed marine alga Emiliania huxleyi has cooling effect on the Earth's climate. The population density of E. huxleyi is restricted by Nucleocytoviricota viruses, including E. huxleyi virus 201 (EhV-201). Despite the impact of E. huxleyi viruses on the climate, there is limited information about their structure and replication. Here, we show that the dsDNA genome inside the EhV-201 virion is protected by an inner membrane, capsid, and outer membrane. EhV-201 virions infect E. huxleyi by using fivefold vertices to bind to and fuse the virus' inner membrane with the cell plasma membrane. Progeny virions assemble in the cytoplasm at the surface of endoplasmic reticulum-derived membrane segments. Genome packaging initiates synchronously with the capsid assembly and completes through an aperture in the forming capsid. The genome-filled capsids acquire an outer membrane by budding into intracellular vesicles. EhV-201 infection induces a loss of surface protective layers from E. huxleyi cells, which enables the continuous release of virions by exocytosis.

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Primary Citation of related structures
8RBS