4AF1 | pdb_00004af1

Archeal Release Factor aRF1

• PDB DOI: https://doi.org/10.2210/pdb4AF1/pdb

• Classification: HYDROLASE
• Organism(s): Halobacterium salinarum R1
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2012-01-16 Released: 2013-03-20 
• Deposition Author(s): Karlsen, J.L., Kjeldgaard, M.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.279 (Depositor) 
• R-Value Work: 
  0.254 (Depositor), 0.240 (DCC) 
• R-Value Observed: 
  0.255 (Depositor) 

Starting Model: experimental

Literature

Archeal Release Factor Arf1 Contains a Metal Binding Domain

Karlsen, J.L., Kjeldgaard, M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content 

• Total Structure Weight: 46.76 kDa 
• Atom Count: 3,405 
• Modeled Residue Count: 410 
• Deposited Residue Count: 416 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PEPTIDE CHAIN RELEASE FACTOR SUBUNIT 1	A	416	Halobacterium salinarum R1	Mutation(s): 0  EC: 3.6.5.3
UniProt
Find proteins for B0R748 (Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1)) Explore B0R748  Go to UniProtKB:  B0R748

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.279 (Depositor) 
• R-Value Work:  0.254 (Depositor), 0.240 (DCC) 
• R-Value Observed: 0.255 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 131.02	α = 90
b = 31.99	β = 113.47
c = 111.15	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALEPACK	data scaling
UCLA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-03-20 
Deposition Author(s): Karlsen, J.L., Kjeldgaard, M.

Revision History  

• Version 1.0: 2013-03-20
  Type: Initial release
  
• Version 1.1: 2017-08-09
  Changes: Data collection
• Version 1.2: 2019-05-08
  Changes: Data collection, Experimental preparation
• Version 1.3: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description
• Version 1.4: 2024-10-23
  Changes: Structure summary