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- PDB-6tuh: PH domain of Bruton's tyrosine kinase bound to compound 1 -

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Basic information

Entry
Database: PDB / ID: 6tuh
TitlePH domain of Bruton's tyrosine kinase bound to compound 1
ComponentsTyrosine-protein kinase BTK
KeywordsTRANSFERASE / BTK / Covalent fragments / surface entrophy reduction / crystal engineering
Function / homology
Function and homology information


regulation of B cell cytokine production / regulation of B cell apoptotic process / monocyte proliferation / positive regulation of interleukin-17A production / proteoglycan catabolic process / eosinophil homeostasis / positive regulation of type III hypersensitivity / B cell affinity maturation / positive regulation of synoviocyte proliferation / histamine secretion by mast cell ...regulation of B cell cytokine production / regulation of B cell apoptotic process / monocyte proliferation / positive regulation of interleukin-17A production / proteoglycan catabolic process / eosinophil homeostasis / positive regulation of type III hypersensitivity / B cell affinity maturation / positive regulation of synoviocyte proliferation / histamine secretion by mast cell / positive regulation of cGAS/STING signaling pathway / neutrophil homeostasis / positive regulation of type I hypersensitivity / cellular response to molecule of fungal origin / MyD88 deficiency (TLR2/4) / cellular response to interleukin-7 / IRAK4 deficiency (TLR2/4) / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / MyD88-dependent toll-like receptor signaling pathway / positive regulation of B cell differentiation / phospholipase activator activity / negative regulation of interleukin-10 production / positive regulation of immunoglobulin production / negative regulation of B cell proliferation / Fc-epsilon receptor signaling pathway / mesoderm development / positive regulation of NLRP3 inflammasome complex assembly / phosphatidylinositol-3,4,5-trisphosphate binding / B cell activation / RHO GTPases Activate WASPs and WAVEs / phospholipase binding / positive regulation of B cell proliferation / peptidyl-tyrosine phosphorylation / cell maturation / FCERI mediated Ca+2 mobilization / positive regulation of phagocytosis / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / : / B cell receptor signaling pathway / non-specific protein-tyrosine kinase / FCGR3A-mediated phagocytosis / cellular response to reactive oxygen species / non-membrane spanning protein tyrosine kinase activity / apoptotic signaling pathway / calcium-mediated signaling / Regulation of actin dynamics for phagocytic cup formation / positive regulation of interleukin-6 production / positive regulation of tumor necrosis factor production / G beta:gamma signalling through BTK / DAP12 signaling / T cell receptor signaling pathway / G alpha (12/13) signalling events / ER-Phagosome pathway / protein tyrosine kinase activity / cytoplasmic vesicle / response to lipopolysaccharide / Potential therapeutics for SARS / G alpha (q) signalling events / adaptive immune response / positive regulation of canonical NF-kappaB signal transduction / intracellular signal transduction / membrane raft / innate immune response / perinuclear region of cytoplasm / zinc ion binding / ATP binding / identical protein binding / nucleus / plasma membrane / cytoplasm / cytosol
Similarity search - Function
Tyrosine-protein kinase BTK, SH3 domain / Zinc finger, Btk motif / BTK motif / Zinc finger Btk-type profile. / Bruton's tyrosine kinase Cys-rich motif / PH domain / : / PH domain profile. / Pleckstrin homology domain. / Pleckstrin homology domain ...Tyrosine-protein kinase BTK, SH3 domain / Zinc finger, Btk motif / BTK motif / Zinc finger Btk-type profile. / Bruton's tyrosine kinase Cys-rich motif / PH domain / : / PH domain profile. / Pleckstrin homology domain. / Pleckstrin homology domain / SH3 domain / SH2 domain / Src homology 2 (SH2) domain profile. / Src homology 2 domains / SH2 domain / Src homology 3 domains / SH2 domain superfamily / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Tyrosine-protein kinase, catalytic domain / Tyrosine kinase, catalytic domain / Tyrosine protein kinases specific active-site signature. / PH-like domain superfamily / Tyrosine-protein kinase, active site / Protein tyrosine and serine/threonine kinase / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily
Similarity search - Domain/homology
4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid / Tyrosine-protein kinase BTK
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.25 Å
AuthorsBrear, P. / Wagstaff, J. / Hyvonen, M.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom) United Kingdom
CitationJournal: J.Med.Chem. / Year: 2026
Title: Targeting a Pleckstrin Homology Domain with a Lysine-Reactive Covalent Binder.
Authors: West, R.M. / Bizga Nicolescu, R.C. / Brear, P. / Wagstaff, J. / Blaszczyk, B.K. / Deingruber, T. / Sanders, M.G. / Perez-Areales, F.J. / Spring, D.R. / Hyvonen, M.
History
DepositionJan 7, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Nov 25, 2020Provider: repository / Type: Initial release
Revision 1.1Jan 24, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.2Oct 16, 2024Group: Advisory / Derived calculations ...Advisory / Derived calculations / Source and taxonomy / Structure summary
Category: entity_src_gen / pdbx_entry_details ...entity_src_gen / pdbx_entry_details / pdbx_modification_feature / pdbx_validate_close_contact / struct / struct_conn / struct_conn_type
Item: _entity_src_gen.gene_src_common_name / _pdbx_entry_details.has_protein_modification / _struct.title
Revision 1.3May 20, 2026Group: 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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Tyrosine-protein kinase BTK
B: Tyrosine-protein kinase BTK
C: Tyrosine-protein kinase BTK
D: Tyrosine-protein kinase BTK
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,98514
Polymers79,8684
Non-polymers1,11710
Water1,42379
1
A: Tyrosine-protein kinase BTK
hetero molecules


Theoretical massNumber of molelcules
Total (without water)20,3895
Polymers19,9671
Non-polymers4224
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Tyrosine-protein kinase BTK
hetero molecules


Theoretical massNumber of molelcules
Total (without water)20,1993
Polymers19,9671
Non-polymers2322
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
C: Tyrosine-protein kinase BTK
hetero molecules


Theoretical massNumber of molelcules
Total (without water)20,1993
Polymers19,9671
Non-polymers2322
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
4
D: Tyrosine-protein kinase BTK
hetero molecules


Theoretical massNumber of molelcules
Total (without water)20,1993
Polymers19,9671
Non-polymers2322
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)67.759, 66.606, 80.267
Angle α, β, γ (deg.)90.000, 100.060, 90.000
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein
Tyrosine-protein kinase BTK / Agammaglobulinemia tyrosine kinase / ATK / B-cell progenitor kinase / BPK / Bruton tyrosine kinase


Mass: 19966.949 Da / Num. of mol.: 4 / Fragment: PH DOMAIN AND BTK MOTIF / Mutation: C145S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BTK, AGMX1, ATK, BPK / Plasmid: pBAT4 / Production host: Escherichia coli BL21(DE3) (bacteria)
References: UniProt: Q06187, non-specific protein-tyrosine kinase
#2: Chemical
ChemComp-NXT / 4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid


Mass: 166.174 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C9H10O3 / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#4: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 79 / 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

CrystalDensity Matthews: 2.23 Å3/Da / Density % sol: 44.92 % / Mosaicity: 0.14 °
Crystal growTemperature: 298 K / Method: vapor diffusion, sitting drop / pH: 8.5 / Details: 0.1 M TRIS 8.5 pH, 32.5% w/v PEG 3350, 200mM MgCl2

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I24 / Wavelength: 0.9687 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Sep 23, 2017
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9687 Å / Relative weight: 1
ReflectionResolution: 2.25→66.72 Å / Num. obs: 32838 / % possible obs: 98.4 % / Redundancy: 4.1 % / Biso Wilson estimate: 59.14 Å2 / CC1/2: 0.987 / Rmerge(I) obs: 0.121 / Rpim(I) all: 0.067 / Rrim(I) all: 0.139 / Net I/σ(I): 7 / Num. measured all: 136122
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. measured allNum. unique obsCC1/2Rpim(I) allRrim(I) allNet I/σ(I) obs% possible all
2.25-2.384.30.792026147560.7870.430.9022.397.8
7.13-66.723.80.108419510970.9810.0610.12411.798

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Processing

Software
NameVersionClassification
BUSTER2.10.3refinement
XDSdata reduction
Aimless0.5.32data scaling
PDB_EXTRACT3.25data extraction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1BTK

1btk


Resolution: 2.25→66.72 Å / Cor.coef. Fo:Fc: 0.929 / Cor.coef. Fo:Fc free: 0.895 / SU R Cruickshank DPI: 0.353 / Cross valid method: THROUGHOUT / σ(F): 0 / SU R Blow DPI: 0.331 / SU Rfree Blow DPI: 0.24 / SU Rfree Cruickshank DPI: 0.248
RfactorNum. reflection% reflectionSelection details
Rfree0.276 1598 4.87 %RANDOM
Rwork0.236 ---
obs0.238 32823 97.6 %-
Displacement parametersBiso max: 170.84 Å2 / Biso mean: 71.72 Å2 / Biso min: 29.94 Å2
Baniso -1Baniso -2Baniso -3
1--11.6208 Å20 Å2-0.3629 Å2
2---1.1074 Å20 Å2
3---12.7281 Å2
Refinement stepCycle: final / Resolution: 2.25→66.72 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5036 0 65 81 5182
Biso mean--93.91 61.62 -
Num. residues----607
Refine LS restraints
Refine-IDTypeNumberRestraint functionWeightDev ideal
X-RAY DIFFRACTIONt_dihedral_angle_d1867SINUSOIDAL2
X-RAY DIFFRACTIONt_trig_c_planes125HARMONIC2
X-RAY DIFFRACTIONt_gen_planes788HARMONIC5
X-RAY DIFFRACTIONt_it5286HARMONIC20
X-RAY DIFFRACTIONt_nbd2SEMIHARMONIC5
X-RAY DIFFRACTIONt_improper_torsion
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_chiral_improper_torsion649SEMIHARMONIC5
X-RAY DIFFRACTIONt_sum_occupancies
X-RAY DIFFRACTIONt_utility_distance
X-RAY DIFFRACTIONt_utility_angle
X-RAY DIFFRACTIONt_utility_torsion
X-RAY DIFFRACTIONt_ideal_dist_contact5562SEMIHARMONIC4
X-RAY DIFFRACTIONt_bond_d5286HARMONIC20.01
X-RAY DIFFRACTIONt_angle_deg7165HARMONIC21.1
X-RAY DIFFRACTIONt_omega_torsion3.41
X-RAY DIFFRACTIONt_other_torsion19.19
LS refinement shellResolution: 2.25→2.32 Å / Rfactor Rfree error: 0 / Total num. of bins used: 16
RfactorNum. reflection% reflection
Rfree0.2677 135 4.8 %
Rwork0.2358 2677 -
all0.2374 2812 -
obs--91.63 %

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