5CH9 | pdb_00005ch9

Gkap mutant B12

• PDB DOI: https://doi.org/10.2210/pdb5CH9/pdb

• Classification: HYDROLASE
• Organism(s): Geobacillus kaustophilus HTA426
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-07-10 Released: 2015-09-09 
• Deposition Author(s): Chen, L.-Q.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.213 (Depositor), 0.223 (DCC) 
• R-Value Work: 
  0.183 (Depositor), 0.195 (DCC) 
• R-Value Observed: 
  0.185 (Depositor) 

Literature

Active site loop architecture enhance the promiscuous PTE activity in lactonase from Geobacillus kaustophilus HTA426

Chen, L.-Q.

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)

Macromolecule Content 

• Total Structure Weight: 81.05 kDa 
• Atom Count: 5,353 
• Modeled Residue Count: 656 
• Deposited Residue Count: 724 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phosphotriesterase	A, B	362	Geobacillus kaustophilus HTA426	Mutation(s): 0  Gene Names: GK1506 EC: 3.5
UniProt
Find proteins for Q5KZU5 (Geobacillus kaustophilus (strain HTA426)) Explore Q5KZU5  Go to UniProtKB:  Q5KZU5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CO	C [auth A], D [auth A], E [auth B], F [auth B]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
KCX	A, B	L-PEPTIDE LINKING	C7 H14 N2 O4		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.213 (Depositor), 0.223 (DCC) 
• R-Value Work:  0.183 (Depositor), 0.195 (DCC) 
• R-Value Observed: 0.185 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.822	α = 90
b = 79.643	β = 99.86
c = 90.066	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-09-09 
Deposition Author(s): Chen, L.-Q.

Revision History  

• Version 1.0: 2015-09-09
  Type: Initial release
  
• Version 1.1: 2019-11-20
  Changes: Advisory, Derived calculations
• Version 1.2: 2025-04-09
  Changes: Data collection, Database references, Derived calculations, Structure summary