4HD1

Crystal structure of squalene synthase HpnC from Alicyclobacillus acidocaldarius

• PDB DOI: https://doi.org/10.2210/pdb4HD1/pdb

• Classification: TRANSFERASE
• Organism(s): Alicyclobacillus acidocaldarius subsp. acidocaldarius DSM 446
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-10-01 Released: 2012-10-24 
• Deposition Author(s): Chang, C., Bearden, J., Li, H., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.247 
• R-Value Work: 0.198 
• R-Value Observed: 0.200 

Literature

Crystal structure of squalene synthase HpnC from Alicyclobacillus acidocaldarius

Chang, C., Bearden, J., Li, H., Joachimiak, A.

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: 33.32 kDa 
• Atom Count: 2,175 
• Modelled Residue Count: 263 
• Deposited Residue Count: 294 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Squalene synthase HpnC	A	294	Alicyclobacillus acidocaldarius subsp. acidocaldarius DSM 446	Mutation(s): 0  Gene Names: Aaci_2442 EC: 2.5.1.32
UniProt
Find proteins for C8WSG3 (Alicyclobacillus acidocaldarius subsp. acidocaldarius (strain ATCC 27009 / DSM 446 / BCRC 14685 / JCM 5260 / KCTC 1825 / NBRC 15652 / NCIMB 11725 / NRRL B-14509 / 104-IA)) Explore C8WSG3  Go to UniProtKB:  C8WSG3

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.247 
• R-Value Work: 0.198 
• R-Value Observed: 0.200 
• Space Group: P 6₁ 2 2
• Diffraction Data: https://doi.org/10.18430/M34HD1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 124.803	α = 90
b = 124.803	β = 90
c = 95.042	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
MLPHARE	phasing
DM	phasing
SHELXDE	phasing
ARP/wARP	model building
RESOLVE	phasing
CNS	phasing
Coot	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-10-24 
Deposition Author(s): Chang, C., Bearden, J., Li, H., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2012-10-24
  Type: Initial release
  
• Version 1.1: 2017-11-15
  Changes: Refinement description
• Version 1.2: 2024-10-30
  Changes: Data collection, Database references, Derived calculations, Structure summary