8G4A

Human ARNT PAS-B complexed with KG-548 small molecule

• PDB DOI: https://doi.org/10.2210/pdb8G4A/pdb

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


• Deposited: 2023-02-08 Released: 2024-02-14 
• Deposition Author(s): Xu, X., Isiorho, E.A., Pimentel Marcelino, L., Gardner, K.H.
• Funding Organization(s): National Science Foundation (NSF, United States)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.97 Å
• R-Value Free: 0.229 
• R-Value Work: 0.204 
• R-Value Observed: 0.206 

Literature

Use of High Pressure NMR Spectroscopy to Rapidly Identify Proteins with Internal Ligand-Binding Voids

Xu, X., Gardner, K.H.

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)

Biological Assembly Evidence: NMR Distance Restraints

Macromolecule Content

• Total Structure Weight: 28.2 kDa 
• Atom Count: 1,787 
• Modelled Residue Count: 211 
• Deposited Residue Count: 238 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aryl hydrocarbon receptor nuclear translocator	A, B	119	Homo sapiens	Mutation(s): 0  Gene Names: ARNT, BHLHE2
UniProt & NIH Common Fund Data Resources
Find proteins for P27540 (Homo sapiens) Explore P27540  Go to UniProtKB:  P27540
PHAROS:  P27540 GTEx:  ENSG00000143437

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
YL8 (Subject of Investigation/LOI)	C [auth A]	5-[3,5-bis(trifluoromethyl)phenyl]-2H-tetrazole C9 H4 F6 N4 KKJFZIQEWZVVIV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.97 Å
• R-Value Free: 0.229 
• R-Value Work: 0.204 
• R-Value Observed: 0.206 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 80.135	α = 90
b = 80.135	β = 90
c = 100.718	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
Blu-Ice	data collection
autoPROC	data reduction
PHASER	phasing
PDB-REDO	refinement
autoPROC	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-02-14 
Deposition Author(s): Xu, X., Isiorho, E.A., Pimentel Marcelino, L., Gardner, K.H.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, United States)	United States	MCB1818148

Revision History  

• Version 1.0: 2024-02-14
  Type: Initial release