6YHD

tRNA-guanine Transglycosylase (TGT) labeled with 5-fluorotryptophan in co-crystallized complex with 6-amino-4-(2-((2R,3S,4R,5R)-3,4-dihydroxy-5-methoxytetrahydrofuran-2-yl)ethyl)-2-(methylamino)-3,7-dihydro-8H-imidazo[4,5-g]quinazolin-8-one

• PDB DOI: https://doi.org/10.2210/pdb6YHD/pdb

• Classification: TRANSFERASE
• Organism(s): Zymomonas mobilis subsp. mobilis ZM4 = ATCC 31821
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2020-03-28 Released: 2020-04-08 
• Deposition Author(s): Nguyen, A., Heine, A., Klebe, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.25 Å
• R-Value Free: 0.144 
• R-Value Work: 0.121 
• R-Value Observed: 0.122 

Starting Model: experimental

Literature

Co-crystallization, nanoESI-MS and 19F NMR reveal dimer disturbing inhibitors and conformational changes at dimer contacts

Nguyen, A., Heine, A., Klebe, G.

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: 43.82 kDa 
• Atom Count: 3,493 
• Modelled Residue Count: 371 
• Deposited Residue Count: 388 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Queuine tRNA-ribosyltransferase	A	388	Zymomonas mobilis subsp. mobilis ZM4 = ATCC 31821	Mutation(s): 1  Gene Names: tgt, ZMO0363 EC: 2.4.2.29
UniProt
Find proteins for P28720 (Zymomonas mobilis subsp. mobilis (strain ATCC 31821 / ZM4 / CP4)) Explore P28720  Go to UniProtKB:  P28720

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1WK (Subject of Investigation/LOI)	B [auth A]	methyl 6-[6-amino-2-(methylamino)-8-oxo-7,8-dihydro-1H-imidazo[4,5-g]quinazolin-4-yl]-5,6-dideoxy-beta-D-ribo-hexofuranoside C17 H22 N6 O5 VKQAJTKFJIETGO-QGMIFYJMSA-N
GOL	C [auth A], D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	F [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	E [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
FTR	A	L-PEPTIDE LINKING	C11 H11 F N2 O2		TRP

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.25 Å
• R-Value Free: 0.144 
• R-Value Work: 0.121 
• R-Value Observed: 0.122 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 90.579	α = 90
b = 65.369	β = 96.129
c = 70.564	γ = 90

Software Package:

Software Name	Purpose
Coot	model building
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-04-08 
Deposition Author(s): Nguyen, A., Heine, A., Klebe, G.

Revision History  

• Version 1.0: 2020-04-08
  Type: Initial release
  
• Version 1.1: 2024-01-24
  Changes: Data collection, Database references, Derived calculations, Refinement description