7LC7

Crystal structure of epoxyqueuosine reductase QueH in complex with GMP from Thermotoga maritima

• PDB DOI: https://doi.org/10.2210/pdb7LC7/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Thermotoga maritima MSB8
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-01-09 Released: 2022-01-12 
• Deposition Author(s): Li, Q., Bruner, S.D.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.58 Å
• R-Value Free: 0.243 
• R-Value Work: 0.200 
• R-Value Observed: 0.202 

Literature

The epoxyqueuosine reductase QueH in the biosynthesis of tRNA queuosine is a unique metalloenzyme

Li, Q., Bruner, S.D.

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)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 23.36 kDa 
• Atom Count: 1,588 
• Modelled Residue Count: 178 
• Deposited Residue Count: 192 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Epoxyqueuosine reductase QueH	A	192	Thermotoga maritima MSB8	Mutation(s): 0  Gene Names: queH, TM_0731 EC: 1.17.99.6
UniProt
Find proteins for Q9WZJ0 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9WZJ0  Go to UniProtKB:  Q9WZJ0

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
5GP (Subject of Investigation/LOI)	C [auth A]	GUANOSINE-5'-MONOPHOSPHATE C10 H14 N5 O8 P RQFCJASXJCIDSX-UUOKFMHZSA-N
SF4 (Subject of Investigation/LOI)	B [auth A]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-UHFFFAOYSA-N
FE (Subject of Investigation/LOI)	D [auth A]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N
CL (Subject of Investigation/LOI)	E [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.58 Å
• R-Value Free: 0.243 
• R-Value Work: 0.200 
• R-Value Observed: 0.202 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 53.335	α = 90
b = 104.783	β = 90
c = 73.741	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-01-12 
Deposition Author(s): Li, Q., Bruner, S.D.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01 GM70641

Revision History  

• Version 1.0: 2022-01-12
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Refinement description