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- PDB-7k1p: Crystal structure of the second bromodomain (BD2) of human TAF1 b... -

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Basic information

Entry
Database: PDB / ID: 7k1p
TitleCrystal structure of the second bromodomain (BD2) of human TAF1 bound to bromosporine
ComponentsTranscription initiation factor TFIID subunit 1
KeywordsGENE REGULATION / TAF1 / non-BET / BET / kinase inhibitor / ATR / dual BRD-kinase
Function / homology
Function and homology information


negative regulation of protein autoubiquitination / regulation of cell cycle G1/S phase transition / RNA polymerase I general transcription initiation factor activity / positive regulation of androgen receptor activity / transcription regulator inhibitor activity / RNA polymerase II general transcription initiation factor binding / midbrain development / cellular response to ATP / transcription factor TFIID complex / RNA polymerase II general transcription initiation factor activity ...negative regulation of protein autoubiquitination / regulation of cell cycle G1/S phase transition / RNA polymerase I general transcription initiation factor activity / positive regulation of androgen receptor activity / transcription regulator inhibitor activity / RNA polymerase II general transcription initiation factor binding / midbrain development / cellular response to ATP / transcription factor TFIID complex / RNA polymerase II general transcription initiation factor activity / HIV Transcription Initiation / RNA Polymerase II HIV Promoter Escape / Transcription of the HIV genome / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / ubiquitin conjugating enzyme activity / transcription initiation at RNA polymerase I promoter / MLL1 complex / positive regulation of transcription initiation by RNA polymerase II / RNA polymerase II core promoter sequence-specific DNA binding / negative regulation of ubiquitin-dependent protein catabolic process / histone acetyltransferase activity / RNA polymerase II preinitiation complex assembly / histone acetyltransferase / RNA Polymerase II Pre-transcription Events / TBP-class protein binding / regulation of signal transduction by p53 class mediator / nuclear receptor binding / transcription initiation at RNA polymerase II promoter / peptidyl-threonine phosphorylation / lysine-acetylated histone binding / mRNA transcription by RNA polymerase II / protein polyubiquitination / cellular response to UV / p53 binding / positive regulation of protein binding / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / kinase activity / ubiquitin-dependent protein catabolic process / peptidyl-serine phosphorylation / Regulation of TP53 Activity through Phosphorylation / RNA polymerase II-specific DNA-binding transcription factor binding / sequence-specific DNA binding / transcription regulator complex / transcription by RNA polymerase II / protein autophosphorylation / protein stabilization / non-specific serine/threonine protein kinase / protein kinase activity / protein heterodimerization activity / protein phosphorylation / negative regulation of gene expression / protein serine kinase activity / protein serine/threonine kinase activity / DNA damage response / chromatin / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / nucleoplasm / ATP binding / nucleus
Similarity search - Function
TAFII-230 TBP-binding / Transcription initiation factor TFIID subunit 1, animal / TAFII-230 TBP-binding domain superfamily / TATA box-binding protein binding / Zinc knuckle / Zinc knuckle / Transcription initiation factor TFIID subunit 1, histone acetyltransferase domain / Transcription initiation factor TFIID subunit 1 / Protein of unknown function (DUF3591) / Bromodomain, conserved site ...TAFII-230 TBP-binding / Transcription initiation factor TFIID subunit 1, animal / TAFII-230 TBP-binding domain superfamily / TATA box-binding protein binding / Zinc knuckle / Zinc knuckle / Transcription initiation factor TFIID subunit 1, histone acetyltransferase domain / Transcription initiation factor TFIID subunit 1 / Protein of unknown function (DUF3591) / Bromodomain, conserved site / Bromodomain signature. / Bromodomain / Bromodomain profile. / bromo domain / Bromodomain / Bromodomain-like superfamily
Similarity search - Domain/homology
Bromosporine / Transcription initiation factor TFIID subunit 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.45 Å
AuthorsKarim, M.R. / Schonbrunn, E.
CitationJournal: J.Med.Chem. / Year: 2022
Title: Discovery of Dual TAF1-ATR Inhibitors and Ligand-Induced Structural Changes of the TAF1 Tandem Bromodomain.
Authors: Karim, R.M. / Yang, L. / Chen, L. / Bikowitz, M.J. / Lu, J. / Grassie, D. / Shultz, Z.P. / Lopchuk, J.M. / Chen, J. / Schonbrunn, E.
History
DepositionSep 8, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 22, 2021Provider: repository / Type: Initial release
Revision 1.1Mar 9, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Mar 23, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.3Oct 18, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.4Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Transcription initiation factor TFIID subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)16,3493
Polymers15,8831
Non-polymers4672
Water41423
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)95.186, 95.186, 94.957
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein Transcription initiation factor TFIID subunit 1 / Cell cycle gene 1 protein / TBP-associated factor 250 kDa / p250 / Transcription initiation factor ...Cell cycle gene 1 protein / TBP-associated factor 250 kDa / p250 / Transcription initiation factor TFIID 250 kDa subunit / TAFII250


Mass: 15882.812 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TAF1, BA2R, CCG1, CCGS, TAF2A / Plasmid: pNIC28.Bsa4 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: P21675, histone acetyltransferase, non-specific serine/threonine protein kinase
#2: Chemical ChemComp-BMF / Bromosporine / ethyl (3-methyl-6-{4-methyl-3-[(methylsulfonyl)amino]phenyl}[1,2,4]triazolo[4,3-b]pyridazin-8-yl)carbamate


Mass: 404.444 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H20N6O4S / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C2H6O2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 23 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop
Details: 0.1 M HEPES (pH 7.5), 10% PEG 8,000, 8% Ethylene glycol

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 22-ID / Wavelength: 1 Å
DetectorType: RIGAKU SATURN 944+ / Detector: CCD / Date: Aug 17, 2016
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.45→41.22 Å / Num. obs: 18720 / % possible obs: 100 % / Redundancy: 11 % / Rmerge(I) obs: 0.054 / Net I/σ(I): 13.4
Reflection shellResolution: 2.45→41.22 Å / Redundancy: 11 % / Rmerge(I) obs: 0.501 / Num. unique obs: 18720 / % possible all: 100

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Processing

Software
NameVersionClassification
PHENIX1.17.1_3660refinement
Aimless0.5.1data scaling
PDB_EXTRACT3.25data extraction
DIALSdata reduction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 7JJG

7jjg


Resolution: 2.45→41.22 Å / SU ML: 0.25 / Cross valid method: THROUGHOUT / σ(F): 1.48 / Phase error: 23.89 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.22 924 4.96 %
Rwork0.194 17711 -
obs0.195 18635 99.7 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso max: 183.37 Å2 / Biso mean: 71.06 Å2 / Biso min: 45.32 Å2
Refinement stepCycle: final / Resolution: 2.45→41.22 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1061 0 32 23 1116
Biso mean--70.97 64.03 -
Num. residues----130
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / Total num. of bins used: 7

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
2.45-2.580.32881320.28824912623100
2.58-2.740.32371320.271624802612100
2.74-2.950.25141320.239724892621100
2.95-3.250.28551320.250325032635100
3.25-3.720.30551260.237625302656100
3.72-4.680.15051290.166525682697100
4.69-41.220.18411410.14892650279199
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
18.0261.0717-1.58457.0527-3.21958.30030.084-1.05340.53160.52380.29120.627-0.4027-0.6076-0.32760.7521-0.098-0.05030.83080.0080.688221.6493-30.821218.52
27.4912-2.00712.43857.6467-2.38255.3909-0.0218-1.0629-0.09690.55730.18290.6807-0.0383-0.1287-0.38830.5741-0.0438-0.04460.599-0.01420.537634.7973-29.697616.573
32.06611.9167-1.85894.0017-3.30064.92160.02620.18240.0187-0.43990.09860.20080.1255-0.0691-0.13470.58920.0252-0.01240.5277-0.03110.458341.6767-20.9495-5.413
44.86972.5364-1.64474.3305-1.05239.1883-0.07230.39750.1342-0.41280.1980.43880.225-0.6621-0.12060.40620.0115-0.04790.42090.02290.429533.3257-25.30410.3912
56.09554.4057-4.44554.9366-4.23333.8679-0.77120.405-0.875-1.01960.0096-0.36031.1709-0.20970.80860.8373-0.01460.03430.5164-0.0990.624437.5731-35.5903-1.3818
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection detailsAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1CHAIN 'A' AND (RESID 1608 THROUGH 1628 )A0
2X-RAY DIFFRACTION2CHAIN 'A' AND (RESID 1499 THROUGH 1517 )A0
3X-RAY DIFFRACTION3CHAIN 'A' AND (RESID 1518 THROUGH 1549 )A0
4X-RAY DIFFRACTION4CHAIN 'A' AND (RESID 1550 THROUGH 1587 )A0
5X-RAY DIFFRACTION5CHAIN 'A' AND (RESID 1588 THROUGH 1607 )A0

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