6LG6

Crystal Structure of the first bromodomain of human BRD4 in complex with compound BDF-1021

• PDB DOI: https://doi.org/10.2210/pdb6LG6/pdb

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


• Deposited: 2019-12-04 Released: 2020-12-09 
• Deposition Author(s): Xu, H., Zuo, Y.
• Funding Organization(s): National Natural Science Foundation of China

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 0.278 
• R-Value Work: 0.234 
• R-Value Observed: 0.236 

Literature

Lead-Opt: An efficient tool for structural optimization of lead compounds

Xu, H., Zuo, Y.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 15.18 kDa 
• Atom Count: 1,084 
• Modelled Residue Count: 124 
• Deposited Residue Count: 125 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bromodomain-containing protein 4	A	125	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 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EC9 (Subject of Investigation/LOI)	B [auth A]	N-[8-oxidanyl-4-(pyridin-2-ylamino)quinolin-2-yl]ethanamide C16 H14 N4 O2 PWXUANZRXPWYEG-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 0.278 
• R-Value Work: 0.234 
• R-Value Observed: 0.236 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 33.808	α = 90
b = 47.15	β = 90
c = 78.326	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: 2020-12-09 
Deposition Author(s): Xu, H., Zuo, Y.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China	China	81903538

Revision History  

• Version 1.0: 2020-12-09
  Type: Initial release
  
• Version 1.1: 2023-11-22
  Changes: Advisory, Data collection, Database references, Refinement description