9TIR | pdb_00009tir

Phage 812 baseplate in the post-contraction state (C6)

• PDB DOI: https://doi.org/10.2210/pdb9TIR/pdb
• EM Map EMD-55967: EMDB EMDataResource

• Classification: VIRUS
• Organism(s): Staphylococcus phage 812K1/420
• Mutation(s): No 


• Deposited: 2025-12-05 Released: 2026-05-20 
• Deposition Author(s): Binovsky, J., Plevka, P.
• Funding Organization(s): European Research Council (ERC), Other government

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Conformational changes of baseplate linked to tail contraction of S. aureus phage phage 812

Binovsky, J., Plevka, P.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C6  (Explore in 3D)
Global Stoichiometry: Hetero 150-mer - A36B36C36D18E12F6G6 Pseudo Symmetry: Cyclic - C6  (Explore in 3D)
Pseudo Stoichiometry: Hetero 150-mer - A36B36C36D18E6F6G6H6 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 1,651.41 kDa 
• Atom Count: 98,678 
• Modeled Residue Count: 12,541 
• Deposited Residue Count: 14,795 
• Unique protein chains: 7

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF61	A	234	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7Q6 (Staphylococcus phage K) Explore Q6Y7Q6  Go to UniProtKB:  Q6Y7Q6

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF62	B, C	348	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7Q5 (Staphylococcus phage K) Explore Q6Y7Q5  Go to UniProtKB:  Q6Y7Q5

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF63	D	1,019	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7Q4 (Staphylococcus phage K) Explore Q6Y7Q4  Go to UniProtKB:  Q6Y7Q4

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF64	E, F, G, H, I, J	173	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7Q3 (Staphylococcus phage K) Explore Q6Y7Q3  Go to UniProtKB:  Q6Y7Q3

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF65	K, L, M, N, O, P	1,152	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7Q2 (Staphylococcus phage K) Explore Q6Y7Q2  Go to UniProtKB:  Q6Y7Q2

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF68	Q, R, S	458	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7P9 (Staphylococcus phage K) Explore Q6Y7P9  Go to UniProtKB:  Q6Y7P9

Entity ID: 7
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF49	T, U, V, W, X, Y	587	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7R8 (Staphylococcus phage K) Explore Q6Y7R8  Go to UniProtKB:  Q6Y7R8

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	5.0
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-05-20 
Deposition Author(s): Binovsky, J., Plevka, P.

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Funding Organization	Location	Grant Number
European Research Council (ERC)	European Union	101043452
Other government		LX22NP05103

Revision History  

• Version 1.0: 2026-05-20
  Type: Initial release