8XAQ

The thermostable and acid-tolerant DNA-binding protein

• PDB DOI: https://doi.org/10.2210/pdb8XAQ/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Sulfolobus acidocaldarius DSM 639
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2023-12-05 Released: 2024-12-11 
• Deposition Author(s): Chen, C.Y., Huang, C.H.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 
  0.254 (Depositor), 0.252 (DCC) 
• R-Value Work: 
  0.220 (Depositor), 0.222 (DCC) 
• R-Value Observed: 
  0.222 (Depositor) 

Starting Model: experimental

Literature

Crystal structures of the thermostable and acid-tolerant DNA-binding proteins, Sac10b1, Sac10b2 and Sac10b1-F59A from Sulfolobus acidocaldarius

Chen, C.Y., Huang, C.H.

To be published.

Biological Assembly 1  

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

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

Biological Assembly Evidence: assay for oligomerization

Macromolecule Content

• Total Structure Weight: 20.89 kDa 
• Atom Count: 1,571 
• Modelled Residue Count: 182 
• Deposited Residue Count: 194 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA/RNA-binding protein Alba	A, B	97	Sulfolobus acidocaldarius DSM 639	Mutation(s): 1  Gene Names: albA
UniProt
Find proteins for Q4J973 (Sulfolobus acidocaldarius (strain ATCC 33909 / DSM 639 / JCM 8929 / NBRC 15157 / NCIMB 11770)) Explore Q4J973  Go to UniProtKB:  Q4J973

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free:  0.254 (Depositor), 0.252 (DCC) 
• R-Value Work:  0.220 (Depositor), 0.222 (DCC) 
• R-Value Observed: 0.222 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.074	α = 90
b = 38.895	β = 131.66
c = 69.12	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-12-11 
Deposition Author(s): Chen, C.Y., Huang, C.H.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	U22A20551

Revision History  

• Version 1.0: 2024-12-11
  Type: Initial release