8QAL

Crystal Structure of the first bromodomain of BRD4 in complex with acetyl-pyrrole derivative compound 83

• PDB DOI: https://doi.org/10.2210/pdb8QAL/pdb

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2023-08-23 Released: 2024-09-11 
• Deposition Author(s): Dalle Vedove, A., Cazzanelli, G., Lolli, G.
• Funding Organization(s): Italian Association for Cancer Research

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.30 Å
• R-Value Free: 0.171 
• R-Value Work: 0.146 
• R-Value Observed: 0.147 

Starting Model: experimental

Literature

Dual BET/BRPF1 inhibitors induce morphological alteration and cellular death in various human cancer cell lines

Cazzanelli, G., Dalle Vedove, A., Caflisch, A., Lolli, G.

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: 15.57 kDa 
• Atom Count: 1,302 
• Modelled Residue Count: 126 
• Deposited Residue Count: 127 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bromodomain-containing protein 4	A	127	Homo sapiens	Mutation(s): 0  Gene Names: BRD4, HUNK1
UniProt & NIH Common Fund Data Resources
Find proteins for O60885 (Homo sapiens) Explore O60885  Go to UniProtKB:  O60885
PHAROS:  O60885 GTEx:  ENSG00000141867

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GQX (Subject of Investigation/LOI)	B [auth A]	2-[4-(3-methyl-4-oxidanylidene-2,5,6,7-tetrahydroisoindol-1-yl)-1,3-thiazol-2-yl]guanidine C13 H15 N5 O S KCVACUMTAXEALK-UHFFFAOYSA-N
EDO	C [auth A], D [auth A], E [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.30 Å
• R-Value Free: 0.171 
• R-Value Work: 0.146 
• R-Value Observed: 0.147 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.213	α = 90
b = 44.668	β = 90
c = 77.734	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-09-11 
Deposition Author(s): Dalle Vedove, A., Cazzanelli, G., Lolli, G.

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Funding Organization	Location	Grant Number
Italian Association for Cancer Research	Italy	MFAG 2017 - ID. 19882

Revision History  

• Version 1.0: 2024-09-11
  Type: Initial release