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- PDB-1k2r: Structure of rat brain nNOS heme domain complexed with NG-nitro-L... -

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Basic information

Entry
Database: PDB / ID: 1k2r
TitleStructure of rat brain nNOS heme domain complexed with NG-nitro-L-arginine
Componentsnitric-oxide synthase
KeywordsOXIDOREDUCTASE / nitric oxide synthase / heme-thiolate protein
Function / homology
Function and homology information


Nitric oxide stimulates guanylate cyclase / negative regulation of hepatic stellate cell contraction / positive regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / retrograde trans-synaptic signaling by nitric oxide / synaptic signaling by nitric oxide / negative regulation of iron ion transmembrane transport / ROS and RNS production in phagocytes / azurophil granule / negative regulation of vasoconstriction / positive regulation of sodium ion transmembrane transport ...Nitric oxide stimulates guanylate cyclase / negative regulation of hepatic stellate cell contraction / positive regulation of adenylate cyclase-activating adrenergic receptor signaling pathway / retrograde trans-synaptic signaling by nitric oxide / synaptic signaling by nitric oxide / negative regulation of iron ion transmembrane transport / ROS and RNS production in phagocytes / azurophil granule / negative regulation of vasoconstriction / positive regulation of sodium ion transmembrane transport / postsynaptic specialization, intracellular component / nitric oxide metabolic process / positive regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / response to nitric oxide / Ion homeostasis / negative regulation of cytosolic calcium ion concentration / peptidyl-cysteine S-nitrosylation / cadmium ion binding / positive regulation of the force of heart contraction / negative regulation of potassium ion transport / negative regulation of calcium ion transport / behavioral response to cocaine / regulation of postsynaptic membrane potential / calyx of Held / regulation of neurogenesis / postsynaptic density, intracellular component / negative regulation of serotonin uptake / nitric-oxide synthase (NADPH) / multicellular organismal response to stress / response to vitamin E / sodium channel regulator activity / nitric oxide mediated signal transduction / negative regulation of insulin secretion / nitric-oxide synthase activity / xenobiotic catabolic process / arginine catabolic process / NADPH binding / striated muscle contraction / regulation of sodium ion transport / nitric oxide-cGMP-mediated signaling / T-tubule / nitric oxide biosynthetic process / cellular response to epinephrine stimulus / sarcoplasmic reticulum membrane / negative regulation of blood pressure / photoreceptor inner segment / response to hormone / response to nutrient levels / secretory granule / sarcoplasmic reticulum / positive regulation of long-term synaptic potentiation / establishment of localization in cell / response to activity / cell periphery / female pregnancy / response to nicotine / phosphoprotein binding / response to lead ion / establishment of protein localization / potassium ion transport / caveola / cellular response to growth factor stimulus / response to organic cyclic compound / sarcolemma / Z disc / response to peptide hormone / cellular response to mechanical stimulus / response to estrogen / vasodilation / calcium-dependent protein binding / calcium ion transport / FMN binding / positive regulation of peptidyl-serine phosphorylation / flavin adenine dinucleotide binding / NADP binding / ATPase binding / response to heat / scaffold protein binding / nuclear membrane / response to ethanol / negative regulation of neuron apoptotic process / mitochondrial outer membrane / transmembrane transporter binding / response to lipopolysaccharide / dendritic spine / postsynaptic density / cytoskeleton / response to hypoxia / calmodulin binding / membrane raft / negative regulation of cell population proliferation / glutamatergic synapse / dendrite / heme binding / synapse / negative regulation of apoptotic process / positive regulation of DNA-templated transcription / perinuclear region of cytoplasm / enzyme binding / positive regulation of transcription by RNA polymerase II
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 / PDZ domain / Flavoprotein-like superfamily / PDZ domain profile. / Domain present in PSD-95, Dlg, and ZO-1/2. / PDZ domain / PDZ superfamily / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
ACETATE ION / 5,6,7,8-TETRAHYDROBIOPTERIN / PROTOPORPHYRIN IX CONTAINING FE / N-OMEGA-NITRO-L-ARGININE / Nitric oxide synthase 1
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.15 Å
AuthorsLi, H. / Martasek, P. / Masters, B.S.S. / Poulos, T.L. / Raman, C.S.
Citation
Journal: To be Published
Title: Structure of rat brain nNOS heme domain
Authors: Li, H. / Martasek, P. / Masters, B.S.S. / Poulos, T.L. / Raman, C.S.
#1: Journal: Cell(Cambridge,Mass.) / Year: 1998
Title: Crystal structure of constitutive endothelial nitric oxide synthase: a paradigm for pterin function involving a novel metal center
Authors: Raman, C.S. / Li, H. / Martasek, P. / Kral, V. / Masters, B.S.S. / Poulos, T.L.
History
DepositionSep 28, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 4, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 2.0Nov 15, 2023Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / Derived calculations
Category: atom_site / chem_comp_atom ...atom_site / chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _atom_site.auth_atom_id / _atom_site.label_atom_id ..._atom_site.auth_atom_id / _atom_site.label_atom_id / _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_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_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_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: nitric-oxide synthase
B: nitric-oxide synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)99,44811
Polymers97,1102
Non-polymers2,3379
Water7,080393
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area10780 Å2
ΔGint-77 kcal/mol
Surface area33180 Å2
MethodPISA
Unit cell
Length a, b, c (Å)51.650, 110.490, 164.740
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 1 types, 2 molecules AB

#1: Protein nitric-oxide synthase


Mass: 48555.215 Da / Num. of mol.: 2 / Fragment: heme-containing oxygenase domain
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: brain / Production host: Escherichia coli (E. coli) / References: UniProt: P29476, nitric-oxide synthase (NADPH)

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Non-polymers , 6 types, 402 molecules

#2: Chemical ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H3O2
#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-H4B / 5,6,7,8-TETRAHYDROBIOPTERIN


Mass: 241.247 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C9H15N5O3 / Comment: neurotransmitter*YM
#5: Chemical ChemComp-NRG / N-OMEGA-NITRO-L-ARGININE / NNA


Type: L-peptide linking / Mass: 219.199 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C6H13N5O4
#6: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 393 / 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: 2.42 Å3/Da / Density % sol: 49.16 %
Crystal growTemperature: 280 K / Method: vapor diffusion, sitting drop / pH: 6
Details: PEG 4000, MES, ammonium acetate, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 280K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL7-1 / Wavelength: 1.08
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 10, 2000 / Details: mirror
RadiationMonochromator: yes / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.08 Å / Relative weight: 1
ReflectionResolution: 2.15→30 Å / Num. obs: 51470 / % possible obs: 97.2 % / Observed criterion σ(I): -3 / Redundancy: 3.1 % / Biso Wilson estimate: 29.3 Å2 / Rmerge(I) obs: 0.095 / Rsym value: 0.095 / Net I/σ(I): 7.5
Reflection shellResolution: 2.15→2.2 Å / Redundancy: 2.6 % / Rmerge(I) obs: 0.677 / Mean I/σ(I) obs: 2 / Num. unique all: 3111 / Rsym value: 0.677 / % possible all: 97.2

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS / Resolution: 2.15→29.5 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 2942397.67 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.27 2594 5.1 %RANDOM
Rwork0.228 ---
obs0.228 51339 98.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 54.8032 Å2 / ksol: 0.364018 e/Å3
Displacement parametersBiso mean: 42 Å2
Baniso -1Baniso -2Baniso -3
1-18.26 Å20 Å20 Å2
2--0.51 Å20 Å2
3----18.77 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.37 Å0.3 Å
Luzzati d res low-5 Å
Luzzati sigma a0.53 Å0.47 Å
Refinement stepCycle: LAST / Resolution: 2.15→29.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6654 0 159 393 7206
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.006
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_deg1.3
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d22.4
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.99
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 2.15→2.23 Å / Rfactor Rfree error: 0.025 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.41 261 5.2 %
Rwork0.387 4736 -
obs--97.4 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION3HETERO.PARHETERO.TOP

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