4FTB | pdb_00004ftb

Crystal structure of the authentic Flock House virus particle

• PDB DOI: https://doi.org/10.2210/pdb4FTB/pdb
• Entry: 4FTB supersedes: 2Z2Q
• NAKB: 4FTB

• Classification: VIRUS
• Organism(s): Flock House virus
• Expression System: Drosophila melanogaster
• Mutation(s): No 


• Deposited: 2012-06-27 Released: 2012-08-01 
• Deposition Author(s): Speir, J.A., Chen, Z., Reddy, V.S., Johnson, J.E.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 
  0.248 (DCC) 
• R-Value Work: 
  0.240 (Depositor), 0.243 (DCC) 

Starting Model: experimental

Literature

Structural study of virus assembly intermediates reveals maturation event sequence and a staging position for externalized lytic peptides

Speir, J.A., Chen, Z., Reddy, V.S., Johnson, J.E.

To be published.

Biological Assembly 1  

Global Symmetry: Icosahedral - I  (Explore in 3D)
Global Stoichiometry: Hetero 360-mer - A180B180 

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

Macromolecule Content 

• Total Structure Weight: 136.78 kDa 
• Atom Count: 8,321 
• Modeled Residue Count: 1,016 
• Deposited Residue Count: 1,236 
• Unique protein chains: 2
• Unique nucleic acid chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein beta	A, C [auth B], E [auth C]	363	Flock House virus	Mutation(s): 0  Gene Names: alpha, coat protein alpha EC: 3.4.23.44
UniProt
Find proteins for P12870 (Flock house virus) Explore P12870  Go to UniProtKB:  P12870

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein gamma	B [auth D], D [auth E], F	44	Flock House virus	Mutation(s): 0  Gene Names: alpha, coat protein alpha EC: 3.4.23.44
UniProt
Find proteins for P12870 (Flock house virus) Explore P12870  Go to UniProtKB:  P12870

Entity ID: 3
Molecule	Chains	Length	Organism	Image
Flock House virus genomic RNA	G [auth R]	15	Flock House virus

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE	K [auth A], N [auth B], O [auth C]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
CA	H [auth A], I [auth A], J [auth A], L [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
CL	M [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free:  0.248 (DCC) 
• R-Value Work:  0.240 (Depositor), 0.243 (DCC) 

Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 327.66	α = 90
b = 327.66	β = 90
c = 774.49	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
GLRF	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-08-01 
Deposition Author(s): Speir, J.A., Chen, Z., Reddy, V.S., Johnson, J.E.
• This entry supersedes: 2Z2Q

Revision History  

• Version 1.0: 2012-08-01
  Type: Initial release
  
• Version 1.1: 2024-04-03
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2024-11-27
  Changes: Structure summary