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- PDB-3tk3: Cytochrome P450 2B4 mutant L437A in complex with 4-(4-chloropheny... -

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Basic information

Entry
Database: PDB / ID: 3tk3
TitleCytochrome P450 2B4 mutant L437A in complex with 4-(4-chlorophenyl)imidazole
ComponentsCytochrome P450 2B4
KeywordsOXIDOREDUCTASE / P450 / cytochrome P450 2B4 / monooxygenase / membrane protein / CYP 2B4 / CYP LM2
Function / homology
Function and homology information


arachidonate epoxygenase activity / epoxygenase P450 pathway / oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen / unspecific monooxygenase / xenobiotic metabolic process / iron ion binding / heme binding / endoplasmic reticulum membrane
Similarity search - Function
Cytochrome P450, E-class, group I, CYP2B-like / : / Cytochrome P450, E-class, group I / Cytochrome p450 / Cytochrome P450 / Cytochrome P450, conserved site / Cytochrome P450 cysteine heme-iron ligand signature. / Cytochrome P450 / Cytochrome P450 superfamily / Cytochrome P450 ...Cytochrome P450, E-class, group I, CYP2B-like / : / Cytochrome P450, E-class, group I / Cytochrome p450 / Cytochrome P450 / Cytochrome P450, conserved site / Cytochrome P450 cysteine heme-iron ligand signature. / Cytochrome P450 / Cytochrome P450 superfamily / Cytochrome P450 / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
4-(4-CHLOROPHENYL)IMIDAZOLE / PROTOPORPHYRIN IX CONTAINING FE / Cytochrome P450 2B4
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 2.8001 Å
AuthorsGay, S.C. / Jang, H.H. / Wilderman, P.R. / Zhang, Q. / Stout, C.D. / Halpert, J.R.
Citation
Journal: Febs J. / Year: 2012
Title: Investigation by site-directed mutagenesis of the role of cytochrome P450 2B4 non-active-site residues in protein-ligand interactions based on crystal structures of the ligand-bound enzyme.
Authors: Wilderman, P.R. / Gay, S.C. / Jang, H.H. / Zhang, Q. / Stout, C.D. / Halpert, J.R.
#1: Journal: J.Biol.Chem. / Year: 2006
Title: Structure of microsomal cytochrome P450 2B4 complexed with the antifungal drug bifonazole: insight into P450 conformational plasticity and membrane interaction.
Authors: Zhao, Y. / White, M.A. / Muralidhara, B.K. / Sun, L. / Halpert, J.R. / Stout, C.D.
#2: Journal: J.Biol.Chem. / Year: 2004
Title: Structure of mammalian cytochrome P450 2B4 complexed with 4-(4-chlorophenyl)imidazole at 1.9-A resolution: insight into the range of P450 conformations and the coordination of redox partner binding.
Authors: Scott, E.E. / White, M.A. / He, Y.A. / Johnson, E.F. / Stout, C.D. / Halpert, J.R.
#3: Journal: Proc.Natl.Acad.Sci.USA / Year: 2003
Title: An open conformation of mammalian cytochrome P450 2B4 at 1.6-A resolution.
Authors: Scott, E.E. / He, Y.A. / Wester, M.R. / White, M.A. / Chin, C.C. / Halpert, J.R. / Johnson, E.F. / Stout, C.D.
#4: Journal: Biochemistry / Year: 2007
Title: Structural and thermodynamic consequences of 1-(4-chlorophenyl)imidazole binding to cytochrome P450 2B4.
Authors: Zhao, Y. / Sun, L. / Muralidhara, B.K. / Kumar, S. / White, M.A. / Stout, C.D. / Halpert, J.R.
#5: Journal: Biochemistry / Year: 2009
Title: Crystal structures of cytochrome P450 2B4 in complex with the inhibitor 1-biphenyl-4-methyl-1H-imidazole: ligand-induced structural response through alpha-helical repositioning.
Authors: Gay, S.C. / Sun, L. / Maekawa, K. / Halpert, J.R. / Stout, C.D.
#6: Journal: Biochemistry / Year: 2010
Title: Structures of cytochrome P450 2B4 complexed with the antiplatelet drugs ticlopidine and clopidogrel .
Authors: Gay, S.C. / Roberts, A.G. / Maekawa, K. / Talakad, J.C. / Hong, W.X. / Zhang, Q. / Stout, C.D. / Halpert, J.R.
#7: Journal: J.Biol.Chem. / Year: 2010
Title: Plasticity of cytochrome P450 2B4 as investigated by hydrogen-deuterium exchange mass spectrometry and X-ray crystallography.
Authors: Wilderman, P.R. / Shah, M.B. / Liu, T. / Li, S. / Hsu, S. / Roberts, A.G. / Goodlett, D.R. / Zhang, Q. / Woods, V.L. / Stout, C.D. / Halpert, J.R.
#8: Journal: Biochemistry / Year: 2011
Title: Structural Analysis of Mammalian Cytochrome P450 2B4 Covalently Bound to the Mechanism-Based Inactivator tert-Butylphenylacetylene: Insight into Partial Enzymatic Activity
Authors: C Gay, S. / Zhang, H. / Wilderman, P.R. / Roberts, A.G. / Liu, T. / Li, S. / Lin, H.L. / Woods Jr., V.L. / Stout, C.D. / Hollenberg, P.F. / Halpert, J.R.
History
DepositionAug 25, 2011Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 16, 2011Provider: repository / Type: Initial release
Revision 1.1May 2, 2012Group: Database references
Revision 1.2Sep 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Cytochrome P450 2B4
B: Cytochrome P450 2B4
C: Cytochrome P450 2B4
D: Cytochrome P450 2B4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)219,68812
Polymers216,5084
Non-polymers3,1808
Water5,224290
1
A: Cytochrome P450 2B4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)54,9223
Polymers54,1271
Non-polymers7952
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
2
B: Cytochrome P450 2B4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)54,9223
Polymers54,1271
Non-polymers7952
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
3
C: Cytochrome P450 2B4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)54,9223
Polymers54,1271
Non-polymers7952
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
4
D: Cytochrome P450 2B4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)54,9223
Polymers54,1271
Non-polymers7952
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)232.910, 232.910, 56.960
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number143
Space group name H-MP3

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Components

#1: Protein
Cytochrome P450 2B4 / CYPIIB4 / Cytochrome P450 isozyme 2 / Cytochrome P450 LM2 / Cytochrome P450 type B0 / Cytochrome P450 type B1


Mass: 54127.004 Da / Num. of mol.: 4
Mutation: E2A, G22K, H23K, P24T, K25S, A26S, H27K, R29K, H226Y, L437A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Oryctolagus cuniculus (rabbit) / Gene: CYP2B4 / Plasmid: PKK / Production host: Escherichia coli (E. coli) / Strain (production host): TOPP3 / References: UniProt: P00178, unspecific monooxygenase
#2: Chemical
ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#3: Chemical
ChemComp-CPZ / 4-(4-CHLOROPHENYL)IMIDAZOLE


Mass: 178.618 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C9H7ClN2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 290 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsAUTHORS INFORMED THAT THE GENBANK SEQUENCE IS THOUGHT TO CONTAIN A SEQUENCING ERROR AT RESIDUE 221.

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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: 4.12 Å3/Da / Density % sol: 70.14 %
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / pH: 6
Details: 0.1 M MES, 20% (w/v) PEG 8000, 0.2 M calcium acetate, pH 6.0, vapor diffusion, sitting drop, temperature 291K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL11-1 / Wavelength: 0.98 Å
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Jul 2, 2011
RadiationMonochromator: Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.98 Å / Relative weight: 1
ReflectionResolution: 2.8→76.24 Å / Num. all: 85144 / Num. obs: 84142 / % possible obs: 99.4 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 4.4 % / Biso Wilson estimate: 53.9 Å2 / Rmerge(I) obs: 0.201 / Rsym value: 0.201 / Net I/σ(I): 5.1
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. measured allNum. unique allRsym value% possible all
2.8-2.994.20.8570.949844118130.85798.6
2.99-3.184.30.6231.248189112150.62398.8
3.18-3.394.30.3871.945462104620.38799.2
3.39-3.674.30.3041.44266298210.30499.4
3.67-4.024.40.231.63959690670.2399.6
4.02-4.494.40.16343664582360.16399.9
4.49-5.194.50.1414.53269472980.141100
5.19-6.354.60.1394.62784361140.139100
6.35-8.984.60.1045.52153746970.104100
8.98-76.2964.50.0871171225830.0899.8

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Phasing

PhasingMethod: molecular replacement
Phasing MRRfactor: 34.47 / Model details: Phaser MODE: MR_AUTO
Highest resolutionLowest resolution
Rotation2.84 Å76.3 Å
Translation2.84 Å76.3 Å

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Processing

Software
NameVersionClassificationNB
MOSFLMdata reduction
SCALA3.3.9data scaling
PHASER2.1.4phasing
PHENIX1.6.4_486refinement
PDB_EXTRACT3.1data extraction
SSRLBlue-Icedata collection
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB Entry 1SUO

1suo


Resolution: 2.8001→50.426 Å / Occupancy max: 1 / Occupancy min: 0 / FOM work R set: 0.8303 / SU ML: 0.42 / σ(F): 1.96 / Phase error: 24.95 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.2408 4202 5 %Random
Rwork0.193 79860 --
obs0.1954 84062 98.74 %-
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 41.402 Å2 / ksol: 0.327 e/Å3
Displacement parametersBiso max: 111.88 Å2 / Biso mean: 52.2929 Å2 / Biso min: 19.84 Å2
Baniso -1Baniso -2Baniso -3
1--0.7365 Å2-0 Å20 Å2
2---0.7365 Å2-0 Å2
3---1.473 Å2
Refinement stepCycle: LAST / Resolution: 2.8001→50.426 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms14683 0 220 290 15193
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.01615382
X-RAY DIFFRACTIONf_angle_d1.35620942
X-RAY DIFFRACTIONf_chiral_restr0.1042276
X-RAY DIFFRACTIONf_plane_restr0.0092729
X-RAY DIFFRACTIONf_dihedral_angle_d15.8165622
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Total num. of bins used: 30

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
2.8001-2.83190.36341340.31522608274294
2.8319-2.86520.37421480.32712601274998
2.8652-2.90010.40931360.3212617275399
2.9001-2.93680.34041400.29932644278498
2.9368-2.97550.31441220.27452729285198
2.9755-3.01620.32781420.27982665280799
3.0162-3.05930.32541290.25492602273199
3.0593-3.1050.3091400.2522685282598
3.105-3.15350.28041410.24522669281098
3.1535-3.20520.27611360.23022654279099
3.2052-3.26040.25871330.21892639277299
3.2604-3.31970.29021430.22022652279598
3.3197-3.38360.27851390.22082659279899
3.3836-3.45260.34141400.24332636277699
3.4526-3.52770.24161370.21092698283598
3.5277-3.60970.24581350.19962670280599
3.6097-3.70.27991350.21562652278799
3.7-3.80.27981290.2022705283498
3.8-3.91170.2621540.19742606276099
3.9117-4.03790.24791310.17172691282299
4.0379-4.18220.19091370.14932693283099
4.1822-4.34960.19671580.146326852843100
4.3496-4.54740.21491450.145326512796100
4.5474-4.7870.19461370.139827392876100
4.787-5.08660.19171430.139926692812100
5.0866-5.47890.20221640.162426282792100
5.4789-6.02950.22641400.187627112851100
6.0295-6.90010.2341570.183926562813100
6.9001-8.68610.17611490.149626842833100
8.6861-50.43460.15821280.16422662279098

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