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- PDB-1m9j: human endothelial nitric oxide synthase with chlorzoxazone bound -

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Basic information

Entry
Database: PDB / ID: 1m9j
Titlehuman endothelial nitric oxide synthase with chlorzoxazone bound
Componentsendothelial Nitric-oxide synthase
KeywordsOXIDOREDUCTASE
Function / homology
Function and homology information


regulation of the force of heart contraction by chemical signal / NOSIP mediated eNOS trafficking / negative regulation of muscle hyperplasia / NOSTRIN mediated eNOS trafficking / smooth muscle hyperplasia / regulation of nervous system process / ovulation from ovarian follicle / response to fluid shear stress / pulmonary valve morphogenesis / negative regulation of biomineral tissue development ...regulation of the force of heart contraction by chemical signal / NOSIP mediated eNOS trafficking / negative regulation of muscle hyperplasia / NOSTRIN mediated eNOS trafficking / smooth muscle hyperplasia / regulation of nervous system process / ovulation from ovarian follicle / response to fluid shear stress / pulmonary valve morphogenesis / negative regulation of biomineral tissue development / positive regulation of guanylate cyclase activity / Nitric oxide stimulates guanylate cyclase / regulation of systemic arterial blood pressure by endothelin / ROS and RNS production in phagocytes / tetrahydrobiopterin binding / aortic valve morphogenesis / arginine binding / endocardial cushion morphogenesis / ventricular septum morphogenesis / positive regulation of Notch signaling pathway / cadmium ion binding / negative regulation of potassium ion transport / negative regulation of calcium ion transport / actin monomer binding / negative regulation of platelet activation / blood vessel remodeling / nitric-oxide synthase (NADPH) / endothelial cell migration / positive regulation of blood vessel endothelial cell migration / nitric oxide mediated signal transduction / nitric-oxide synthase activity / eNOS activation / arginine catabolic process / negative regulation of extrinsic apoptotic signaling pathway via death domain receptors / lipopolysaccharide-mediated signaling pathway / regulation of sodium ion transport / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / homeostasis of number of cells within a tissue / nitric oxide biosynthetic process / negative regulation of blood pressure / removal of superoxide radicals / response to hormone / cell redox homeostasis / blood vessel diameter maintenance / VEGFR2 mediated vascular permeability / establishment of localization in cell / mitochondrion organization / negative regulation of smooth muscle cell proliferation / lung development / potassium ion transport / caveola / regulation of blood pressure / vasodilation / positive regulation of angiogenesis / calcium ion transport / endocytic vesicle membrane / FMN binding / flavin adenine dinucleotide binding / NADP binding / response to heat / scaffold protein binding / angiogenesis / in utero embryonic development / response to lipopolysaccharide / Extra-nuclear estrogen signaling / cytoskeleton / calmodulin binding / negative regulation of cell population proliferation / Golgi membrane / heme binding / positive regulation of gene expression / Golgi apparatus / nucleus / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3 / Nitric Oxide Synthase; Chain A, domain 3 / Nitric Oxide Synthase; Chain A, domain 1 / Nitric Oxide Synthase; Chain A, domain 1 / Nitric Oxide Synthase;Heme Domain; Chain A, domain 2 / Nitric Oxide Synthase;Heme Domain;Chain A domain 2 / Nitric-oxide synthase, eukaryote / Nitric oxide synthase, N-terminal / Nitric oxide synthase, N-terminal domain superfamily / Nitric oxide synthase, domain 2 superfamily ...Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3 / Nitric Oxide Synthase; Chain A, domain 3 / Nitric Oxide Synthase; Chain A, domain 1 / Nitric Oxide Synthase; Chain A, domain 1 / Nitric Oxide Synthase;Heme Domain; Chain A, domain 2 / Nitric Oxide Synthase;Heme Domain;Chain A domain 2 / Nitric-oxide synthase, eukaryote / Nitric oxide synthase, N-terminal / Nitric oxide synthase, N-terminal domain superfamily / Nitric oxide synthase, domain 2 superfamily / Nitric oxide synthase, domain 1 superfamily / Nitric oxide synthase, domain 3 superfamily / : / Nitric oxide synthase, oxygenase domain / Nitric oxide synthase (NOS) signature. / Sulfite reductase [NADPH] flavoprotein alpha-component-like, FAD-binding / NADPH-cytochrome p450 reductase, FAD-binding, alpha-helical domain superfamily / FAD binding domain / Flavodoxin-like / Flavoprotein pyridine nucleotide cytochrome reductase / Flavodoxin / Flavodoxin-like domain profile. / Flavodoxin/nitric oxide synthase / Oxidoreductase FAD/NAD(P)-binding / Oxidoreductase NAD-binding domain / FAD-binding domain, ferredoxin reductase-type / Ferredoxin-NADP reductase (FNR), nucleotide-binding domain / Ferredoxin reductase-type FAD binding domain profile. / Riboflavin synthase-like beta-barrel / Flavoprotein-like superfamily / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
CHLORZOXAZONE / PROTOPORPHYRIN IX CONTAINING FE / Nitric oxide synthase 3
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.43 Å
AuthorsRosenfeld, R.J. / Garcin, E.D. / Panda, K. / Andersson, G. / Aberg, A. / Wallace, A.V. / Stuehr, D.J. / Tainer, J.A. / Getzoff, E.D.
Citation
Journal: Biochemistry / Year: 2002
Title: Conformational Changes in Nitric Oxide Synthases Induced by Chlorzoxazone and Nitroindazoles: Crystallographic and Computational Analyses of Inhibitor Potency
Authors: Rosenfeld, R.J. / Garcin, E.D. / Panda, K. / Andersson, G. / Aberg, A. / Wallace, A.V. / Morris, G.M. / Olson, A.J. / Stuehr, D.J. / Tainer, J.A. / Getzoff, E.D.
#1: Journal: Science / Year: 1998
Title: Structure of nitric oxide synthase oxygenase dimer with pterin and substrate
Authors: Crane, B.R. / Arvai, A.S. / Ghosh, D.K. / Wu, C. / Getzoff, E.D. / Stuehr, D.J. / Tainer, J.A.
History
DepositionJul 29, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 14, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 14, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / struct_conn / 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_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_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_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_conn.ptnr2_label_seq_id / _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: endothelial Nitric-oxide synthase
B: endothelial Nitric-oxide synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)95,4787
Polymers93,8402
Non-polymers1,6385
Water2,630146
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area8790 Å2
ΔGint-126 kcal/mol
Surface area32520 Å2
MethodPISA
Unit cell
Length a, b, c (Å)71.071, 89.891, 155.833
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
DetailsBiologically active as a dimer. The dimer is formed by chain A, chain B, two hemes, and one zinc atom, does not require symmetry operations.

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Components

#1: Protein endothelial Nitric-oxide synthase / EC-NOS / NOS / type III / NOSIII / Endothelial NOS / eNOS / Constitutive NOS / cNOS


Mass: 46920.156 Da / Num. of mol.: 2 / Fragment: oxygenase domain
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: UniProt: P29474, nitric-oxide synthase (NADPH)
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#4: Chemical ChemComp-CLW / CHLORZOXAZONE / 5-CHLORO-2-BENZOXAZOLONE


Mass: 169.565 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C7H4ClNO2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 146 / Source method: isolated from a natural source / Formula: H2O

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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: 2.65 Å3/Da / Density % sol: 53.59 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 5.5
Details: NaCl, MPD, PEG, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Crystal grow
*PLUS
pH: 8 / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
120 mg/mlprotein1drop
225 mMTris1droppH8.0
3400 mM1dropNaCl
44 mMdithiothreitol1drop
50.010 mMBH41drop
6200-400 mM1reservoirNaCl
713 %MPD1reservoiror 2-propamol
82-5 %PEG33501reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 14-BM-C / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Oct 27, 2000
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.43→20 Å / Num. all: 34536 / Num. obs: 34536 / % possible obs: 89.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.3 % / Biso Wilson estimate: 26.9 Å2 / Rmerge(I) obs: 0.08 / Rsym value: 0.08 / Net I/σ(I): 21.1
Reflection shellResolution: 2.43→2.52 Å / Redundancy: 5.3 % / Rmerge(I) obs: 0.425 / Mean I/σ(I) obs: 5.3 / Num. unique all: 3376 / Rsym value: 0.425 / % possible all: 89.4
Reflection
*PLUS
Num. measured all: 181549 / Rmerge(I) obs: 0.08
Reflection shell
*PLUS
% possible obs: 89.4 % / Num. unique obs: 3376 / Num. measured obs: 18071

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Processing

Software
NameClassification
HKL-2000data collection
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.43→20 Å / Rfactor Rfree error: 0.007 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.272 1709 5 %RANDOM
Rwork0.216 ---
all-34502 --
obs-34502 89.9 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 10 Å2 / ksol: 0.286421 e/Å3
Displacement parametersBiso mean: 40.6 Å2
Baniso -1Baniso -2Baniso -3
1-16.62 Å20 Å20 Å2
2---0.64 Å20 Å2
3----15.98 Å2
Refine analyzeLuzzati coordinate error free: 0.4 Å / Luzzati sigma a free: 0.4 Å
Refinement stepCycle: LAST / Resolution: 2.43→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6368 0 109 146 6623
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.008
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d23.4
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.19
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.371.5
X-RAY DIFFRACTIONc_mcangle_it2.242
X-RAY DIFFRACTIONc_scbond_it2.122
X-RAY DIFFRACTIONc_scangle_it3.122.5
LS refinement shellResolution: 2.43→2.58 Å / Rfactor Rfree error: 0.02 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.349 294 5.3 %
Rwork0.287 5305 -
obs-3376 89.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARHCSDX.PROTOPHCSDX.PRO
X-RAY DIFFRACTION2PARAM19.SOLTOPH19.SOL
X-RAY DIFFRACTION3PARAM19X.HEMETOPH19X.HEME
X-RAY DIFFRACTION4CHLZ.PARCHLZ.TOP
X-RAY DIFFRACTION5MISC.PARMISC.TOP
Refinement
*PLUS
Lowest resolution: 20 Å / Rfactor Rfree: 0.271
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg23.4
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg1.19

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