4DSI

Crystal structure of fragment DNA polymerase I from Bacillus stearothermophilus with duplex DNA, Se-dGTP and Calcium

• PDB DOI: https://doi.org/10.2210/pdb4DSI/pdb
• NAKB: 4DSI

• Classification: TRANSFERASE/DNA
• Organism(s): Geobacillus stearothermophilus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2012-02-19 Released: 2013-03-27 
• Deposition Author(s): Gan, J.H., Abdur, R., Liu, H.H., Sheng, J., Caton-Willians, J., Soares, A.S., Huang, Z.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.234 
• R-Value Work: 0.191 
• R-Value Observed: 0.193 

Starting Model: experimental

Literature

Biochemical and structural insights into the fidelity of bacillus stearothermophilus DNA polymerase

Gan, J.H., Abdur, R., Liu, H.H., Sheng, J., Caton-Willians, J., Soares, A.S., Huang, Z.

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: 73.76 kDa 
• Atom Count: 5,343 
• Modelled Residue Count: 599 
• Deposited Residue Count: 602 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA polymerase	A	581	Geobacillus stearothermophilus	Mutation(s): 2  Gene Names: DPO1 EC: 2.7.7.7
UniProt
Find proteins for E1C9K5 (Geobacillus stearothermophilus) Explore E1C9K5  Go to UniProtKB:  E1C9K5

Entity ID: 2
Molecule	Chains	Length	Organism	Image
DNA	B	12	N/A

Entity ID: 3
Molecule	Chains	Length	Organism	Image
Se-dGTP	C	9	N/A

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DGP	L [auth C]	2'-DEOXYGUANOSINE-5'-MONOPHOSPHATE C10 H14 N5 O7 P LTFMZDNNPPEQNG-KVQBGUIXSA-N
SO4	I [auth A], J [auth A], K [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	D [auth A], E [auth A], F [auth A], G [auth A], H [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CA	M [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.234 
• R-Value Work: 0.191 
• R-Value Observed: 0.193 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 88.573	α = 90
b = 93.387	β = 90
c = 105.928	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-03-27 
Deposition Author(s): Gan, J.H., Abdur, R., Liu, H.H., Sheng, J., Caton-Willians, J., Soares, A.S., Huang, Z.

Revision History  

• Version 1.0: 2013-03-27
  Type: Initial release
  
• Version 1.1: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 2.0: 2024-05-29
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary