8UCX

Dihydrofolate Reductase Complexed with Folate

• PDB DOI: https://doi.org/10.2210/pdb8UCX/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-09-27 Released: 2023-10-11 
• Deposition Author(s): Fried, S.D.E., Boxer, S.G.
• Funding Organization(s): National Science Foundation (NSF, United States), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.57 Å
• R-Value Free: 0.217 
• R-Value Work: 0.186 
• R-Value Observed: 0.187 

Literature

Role of Electrostatics in Hydride Transfer by Dihydrofolate Reductase

Fried, S.D.E., Mukherjee, S., Mao, Y., Boxer, S.G.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 18.67 kDa 
• Atom Count: 1,516 
• Modelled Residue Count: 157 
• Deposited Residue Count: 159 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Dihydrofolate reductase	A	159	Escherichia coli	Mutation(s): 0  Gene Names: folA
UniProt
Find proteins for P0ABQ4 (Escherichia coli (strain K12)) Explore P0ABQ4  Go to UniProtKB:  P0ABQ4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FOL (Subject of Investigation/LOI)	B [auth A]	FOLIC ACID C19 H19 N7 O6 OVBPIULPVIDEAO-LBPRGKRZSA-N
MN	C [auth A], D [auth A], E [auth A]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
OCS	A	L-PEPTIDE LINKING	C3 H7 N O5 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.57 Å
• R-Value Free: 0.217 
• R-Value Work: 0.186 
• R-Value Observed: 0.187 
• Space Group: I 4

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.4	α = 90
b = 104.4	β = 90
c = 33.908	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
XDS	data reduction
PHENIX	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-10-11 
Deposition Author(s): Fried, S.D.E., Boxer, S.G.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, United States)	United States	MCB-1915727
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R35GM118044

Revision History  

• Version 1.0: 2023-10-11
  Type: Initial release
  
• Version 1.1: 2023-11-15
  Changes: Data collection