4MFA

Structure of human DNA polymerase beta complexed with nicked DNA containing a mismatched template O6MG and incoming TTP

• PDB DOI: https://doi.org/10.2210/pdb4MFA/pdb
• NAKB: 4MFA

• Classification: TRANSFERASE/DNA
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-08-27 Released: 2014-08-27 
• Deposition Author(s): Koag, M.C., Min, K., Monzingo, A.F., Lee, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.27 Å
• R-Value Free: 0.283 
• R-Value Work: 0.212 
• R-Value Observed: 0.215 

Literature

Structures of human DNA polymerase beta inserting bases opposite templating O6MG

Koag, M.C., Min, K., Monzingo, A.F., Lee, S.

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: 47.05 kDa 
• Atom Count: 3,284 
• Modelled Residue Count: 353 
• Deposited Residue Count: 357 
• Unique protein chains: 1
• Unique nucleic acid chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA polymerase beta	A	325	Homo sapiens	Mutation(s): 0  Gene Names: POLB EC: 2.7.7.7 (PDB Primary Data), 4.2.99 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P06746 (Homo sapiens) Explore P06746  Go to UniProtKB:  P06746
PHAROS:  P06746 GTEx:  ENSG00000070501

Entity ID: 2
Molecule	Chains	Length	Organism	Image
template	B [auth T]	16	N/A

Entity ID: 3
Molecule	Chains	Length	Organism	Image
up primer	C [auth P]	11	N/A

Entity ID: 4
Molecule	Chains	Length	Organism	Image
dn primer	D	5	N/A

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	H [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
MG	F [auth A], I [auth P]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N
NA	E [auth A], G [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.27 Å
• R-Value Free: 0.283 
• R-Value Work: 0.212 
• R-Value Observed: 0.215 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.971	α = 90
b = 79.662	β = 106.68
c = 55.001	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
StructureStudio	data collection
DENZO	data reduction
HKL-2000	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-08-27 
Deposition Author(s): Koag, M.C., Min, K., Monzingo, A.F., Lee, S.

Revision History  

• Version 1.0: 2014-08-27
  Type: Initial release
  
• Version 1.1: 2024-02-28
  Changes: Data collection, Database references, Derived calculations