L-45
Names
[ CAS No. ]:
2079885-05-3
[ Name ]:
L-45
Biological Activity
[Description]:
L-45 is the first potent, selective, and cell-active p300/CBP-associated factor (PCAF) bromodomain (Brd) inhibitor with a Kd of 126±15 nM.
[Related Catalog]:
[Target]
Brd:126 nM (Kd)
[In Vitro]
L-45 disrupts PCAF-Brd histone H3.3 interaction in cells using a nanoBRET assay, and a co-crystal structure of L-45 with the homologous Brd PfGCN5 from Plasmodium falciparum rationalizes the high selectivity for PCAF and GCN5 bromodomains. A structure using highly homologous (64 % identity) Brd from Plasmodium falciparum, PfGCN5, of which L-45 is also a potent ligand (isothermal titration calorimetry (ITC) KD 280 nM), is successfully obtained (PDB: 5TPX). L-45 binds in the acetylated lysines (KAc) -binding pocket of PfGCN (blue ribbon and sticks) and makes H-bonds (dotted lines) through the triazole to N1436 and the first of a network of four water molecules (red spheres)[1].
[In Vivo]
L-45 shows no observable cytotoxicity in peripheral blood mononuclear cells (PBMC), good cell-permeability, and metabolic stability in human and mouse liver microsomes, supporting its potential for in vivo use[1].
[References]
[Related Small Molecules]
(+)-JQ1
|
GSK126
|
Tazemetostat (EPZ-6438)
|
Birabresib (OTX015)
|
A 485
|
Curcumin
|
ARV-771
|
ARV-825
|
I-BET762
|
BI 2536
|
GSK343
|
C646
|
3-Deazaneplanocin A (hydrochloride)
|
I-BET151
|
666-15
Chemical & Physical Properties
[ Molecular Formula ]:
C21H24N6
[ Molecular Weight ]:
360.46
[ Storage condition ]:
2-8℃