9TIP | pdb_00009tip

Phage 812 baseplate in the pre-contraction state - upper arm (segment CDEF)

• PDB DOI: https://doi.org/10.2210/pdb9TIP/pdb
• EM Map EMD-55964: 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: 5.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Conformational changes of baseplate regulating tail contraction of Staphylococcus phage 812

Binovsky, J., Plevka, P.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 15-mer - A8B3C3D1 

Local Symmetry: Cyclic - C3  (Explore in 3D)
Local Stoichiometry: Homo 3-mer - B3 Local Symmetry: Cyclic - C3  (Explore in 3D)
Local Stoichiometry: Homo 3-mer - C3 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 639.85 kDa 
• Atom Count: 15,113 
• Modeled Residue Count: 1,915 
• Deposited Residue Count: 5,697 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF63	A	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: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF64	B, C, D, E, F, G, H, I	173	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7Q3 (Staphylococcus phage K) Explore Q6Y7Q3  Go to UniProtKB:  Q6Y7Q3

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF68	J, K, L	458	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for Q6Y7P9 (Staphylococcus phage K) Explore Q6Y7P9  Go to UniProtKB:  Q6Y7P9

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
CBM-cenC domain-containing protein	M, N, O	640	Staphylococcus phage 812K1/420	Mutation(s): 0
UniProt
Find proteins for A0A0U1UXW5 (Staphylococcus phage 812) Explore A0A0U1UXW5  Go to UniProtKB:  A0A0U1UXW5

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 5.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	5
MODEL REFINEMENT	PHENIX	1.21

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	Czech Republic	LX22NP05103

Revision History  

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