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. Author manuscript; available in PMC: 2026 Sep 23.
Published in final edited form as: Mol Cell. 2026 Aug 6;86(16):3185–3197.e7. doi: 10.1016/j.molcel.2026.07.012

Key resources table.

REAGENT or RESOURCE SOURCE IDENTIFIER
Antibodies
rabbit monoclonal anti-Histone H4K12ac EpiCypher Cat# 13-0037
rabbit polyclonal anti-Histone H4K16ac Acitve Motif Cat# 39068; RRID:AB_2636968
Histone H4 antibody Abcam Cat# ab17036; RRID:AB_1209245
m-IgGκ BP-HRP antibody Santa Cruz Biotechnology Cat# sc-516102; RRID:AB_2687626
Bacterial and virus strains
E. coli BL21(DE3)pLysS Invitrogen Cat# C602003
Rosetta 2(DE3)pLysS Singles MilliporeSigma Cat# 71401-3
E. coli TG1 Toby Gibson
E. coli HB101 ATCC Cat# 67593
C321.ΔA.exp Addgene Cat# 49018
Chemicals, peptides, and recombinant proteins
Q5 High-Fidelity DNA polymerase New England Biolabs Cat# M0491L
Benzamidine-HCl RPI Cat# B12000100.0
2-mercaptoethanol Acros Cat# 12547-0010
TEV protease This study N/A
1,4-Dithio-DL-thretiol Gold Bio Cat# DTT100
Nε-Acetyl-L-lysine Chem Impex Cat# 05364
Nicotinamide Millipore Sigma Cat# N3376
UREA Fisher Scientific Cat# U15-50
Guanidine Hydrochloride Fisher Scientific Cat# BP178-1
(+)-JQ1 Selleck Chemical Cat# S7110
Sodium phosphate, dibasic, anhydrous Fisher Scientific Cat# S374-1
Potassium phosphate, monobasic Fisher Scientific Cat# BP362-1
NP-40 CalBioChem Cat# 492015
CHAPS VWR Cat# 97061-716
LANCE Ultra ULight-anti-6xHIS Revvity, Inc. Cat# TRF0134-M
LANCE Eu-8044 streptavidin Revvity, Inc. Cat# AD0060
Histone H3, H3 mutants This study N/A
Histone H4, H4 mutants This study N/A
Histone H2A This study N/A
Histone H2B This study N/A
Human BRD4, BRD4 mutants This study N/A
Critical commercial assays
West Pico PLUS Chemiluminescent Substrate Thermo Scientific Cat# 34580
Deposited data
BRD4 BD1-acetylated nucleosome complex This study PDB: 36IV
BRD4 BD1 with basic patch 1-acetylated nucleosome complex This study PDB: 36IU
BRD4 BD1-acetylated nucleosome complex Cryo-EM map This study EMDB: EMD-77606
BRD4 BD1 with basic patch 1-acetylated nucleosome complex Cryo-EM map This study EMDB: EMD-77605
TR-FRET raw data, blot images and uncropped gel This study DOI:10.17632/c5pwxv8c2s.1
https://data.mendeley.com/preview/c5pwxv8c2s?a=45bd27b8-8459-41cbbcf8-4ff7292a5990
Oligonucleotides
177 bp 601 Cy5 forward primer (ATCATGTGATGGACCCTATACGCGGCCGCCCTGGAG) IDT N/A
Recombinant DNA
pGEX-6P-1 BRD4 full-length Addgene Plasmid #14447
pST50Tr-HISNhBRD4t1 This study expresses HISNhBRD4Δ1 and
hBRD4Δ1=hBRD4 (2–722)
pST50Tr-HISNhBRD4t1x2 This study expresses HISNhBRD4Δ1m2
(Y97F,N140A)
pST50Tr-HISNhBRD4t1x3 This study expresses HISNhBRD4Δ1m3 (A80V)
pST50Tr-HISNhBRD4t1x8 This study expresses HISNhBRD4Δ1m8
(Y390F,N433A)
pST50Tr-HISNhBRD4t1x9 This study expresses HISNhBRD4Δ1m9
(K283A,K285A,K286A,K289A,R290A,
K291A)
pST50Tr-HISNhBRD4t1x10 This study expresses HISNhBRD4Δ1m10
(K283E,K285E,K286E,K289E,R290E,
K291E)
pST50Tr-HISNhBRD4t1x11 This study expresses HISNhBRD4Δ1m11
(177A,R179A,R181A,R183A,K184A)
pST50T r-HISNhBRD4t1 x12 This study expresses HISNhBRD4Δ1m12
(K177E,R179E,R181E,R183E,K184E)
pST50Tr-HISNhBRD4t1x13 This study expresses HISNhBRD4Δ1m13
(K314A,K317A,R321A,R322A,R326A,
K329A,K332A,K333A)
pST50T r-HISNhBRD4t1 x14 This study expresses HISNhBRD4Δ1m14
(K314E,K317E,R321E,R322E,R326E,
K329E,K332E,K333E)
pST50Tr-HISNhBRD4t1x15 This study expresses HISNhBRD4Δ1m15
(K535A,K537A,K538A,K539A,K541A,
K543A,K544A,K546A,K547A,K548A,
K550A,K552A,R553A,K554A)
pST50T r-HISNhBRD4t1x16 This study expresses HISNhBRD4Δ1m16
(K561A,K562A,K564A,K566A,K571A,
K572A,K574A,K575A)
pST50Tr-HISNhBRD4t1x19 This study expresses HISNhBRD4Δ1m19
(K283A,K285A,K286A,K289A,R290A,
K291A,K314A,K317A,R321A,R322A,
R326A,K329A,K332A,K333A)
pST50Tr-HISNhBRD4t1x20 This study expresses HISNhBRD4Δ1m20
(K283E,K285E,K286E,K289E,R290E,
K291E,K314E,K317E,R321E,R322E,
R326E,K329E,K332E,K333E)
pST50Tr-HISNhBRD4t1x21 This study expresses HISNhBRD4Δ1m21
(K177A,R179A,R181A,R183A,K184A,
K283A,K285A,K286A,K289A,R290A,
K291A,K314A,K317A,R321A,R322A,
R326A,K329A,K332A,K333A)
pST50Tr-HISNhBRD4t1x26 This study expresses HISNhBRD4Δ1m26
(K177E,R179E,R181E,R183E,K184E,
K283E,K285E,K286E,K289E,R290E,
K291E,K314E,K317E,R321E,R322E,
R326E,K329E,K332E,K333E,K535A,
K537A,K538A,K539A,K541A,K543A,
K544A,K546A,K547A,K548A,K550A,
K552A,R553A,K554A,K561A,K562A,
K564A,K566A,K571A,K572A,K574A,
K575A)
pST50Tr-HISNhBRD4t1x27 This study expresses HISNhBRD4Δ1m27
(K99E,K102E)
pST50Tr-HISNhBRD4t1x28 This study expresses HISNhBRD4Δ1m28
(R68E,K72E,K76E)
pST50Tr-HISNhBRD4t1x37 This study expresses HISNhBRD4Δ1m37
(W75A)
pST50Tr-HISNhBRD4t1x38 This study expresses HISNhBRD4Δ1m37
(R179E,R181E,R183E)
pST50Tr-HISNhBRD4t1x42 This study expresses HISNhBRD4Δ1m42
(R179A,R181 A,R183A)
pST50Tr-HISNhBRD4t1x43 This study expresses HISNhBRD4Δ1m43
(R179K,R181 K,R183K)
pST50Tr-HISNhBRD4t1x45 This study expresses HISNhBRD4Δ1m45
(R181E)
pST50Tr-HISNhBRD4t1x46 This study expresses HISNhBRD4Δ1m46
(K561A,K562A,K564A,K566A,K571A,
K572A,K574A,K575A)
pST50Tr-HISNhBRD4t6 This study expresses
HISNhBRD4Δ6=HISNhBRD4 (40–
170)
pST50Tr-HISNhBRD4t11 This study expresses
HISNhBRD4Δ11=HISNhBRD4 (349–
470)
pST101-15xNCP601 a165M This study to isolate 165 bp 601 sequence
pST50T rc2-xH4t13 This study express Xenopus H4 (24–102)
pCDF_PylT-HISNxH3 gift from Jason Chin N/A
pBK-AcKRS3 gift from Jason Chin N/A
pCDF_PylT-HISNxH3x55 This study expresses Xenopus H3 with
acetylated K18
pBAD-CDF-xH3(Δ93-98)-TEV-xH4 gift from Heinz Neumann N/A
pBAD-CDF-HISxH3t14NxH4x51 This study expresses Xenopus H4 with
acetylated K12 and K16.
Software and algorithms
CryoSparc V 4.6 Punjani et al. https://cryosparc.com
UCSF Chimera X Pettersen et al. https://www.cgl.ucsf.edu/chimerax/
Phenix v1.20 Afonine et al. https://phenix-online.org
ImageJ Schneider et al. https://imagej.nih.gov/ij/
Visual Studio Code Microsoft Corporation https://code.visualstudio.com
PyMol Schrödinger https://pymol.org
Other
Ni-NTA Superflow resin QIAGEN Cat# 30410
Talon Superflow metal affinity resin Clontech Cat# 635670
Nitrocellulose blotting membrane GE Healthcare Cat# 10600009
Source 15S cation-exchanger GE Healthcare Cat# 17-0944-01
Source 15Q anion-exchanger GE Healthcare Cat# 17-0947-01
Superdex 200 Increase 10/300 GL GE Healthcare Cat# 28-9909-44
Vivaspin 500 centrifugal concentrator MWCO:30kDa Sartorius Cat# VS0122
Vivaspin 20 centrifugal concentrator MWCO:30kDa Sartorius Cat# VS2022
Quantifoil R1.2/1.3 Cu 300 mesh grid Quantifoil Cat# N1-C14nCu30-01
Vitrobot Mark IV Thermo Fisher Scientific N/A
384-well non-binding microplate Greiner Bio-One Cat# GBO-784904
VICTOR Nivo Multimode Microplate Reader Revvity, Inc. N/A