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- PDB-1sxn: REDUCED BOVINE SUPEROXIDE DISMUTASE AT PH 5.0 -

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Basic information

Entry
Database: PDB / ID: 1sxn
TitleREDUCED BOVINE SUPEROXIDE DISMUTASE AT PH 5.0
ComponentsCU, ZN SUPEROXIDE DISMUTASE
KeywordsOXIDOREDUCTASE / SUPEROXIDE ACCEPTOR
Function / homology
Function and homology information


Platelet degranulation / Detoxification of Reactive Oxygen Species / positive regulation of catalytic activity / neurofilament cytoskeleton organization / protein phosphatase 2B binding / relaxation of vascular associated smooth muscle / response to superoxide / peripheral nervous system myelin maintenance / retina homeostasis / auditory receptor cell stereocilium organization ...Platelet degranulation / Detoxification of Reactive Oxygen Species / positive regulation of catalytic activity / neurofilament cytoskeleton organization / protein phosphatase 2B binding / relaxation of vascular associated smooth muscle / response to superoxide / peripheral nervous system myelin maintenance / retina homeostasis / auditory receptor cell stereocilium organization / hydrogen peroxide biosynthetic process / myeloid cell homeostasis / muscle cell cellular homeostasis / superoxide metabolic process / heart contraction / superoxide dismutase / transmission of nerve impulse / superoxide dismutase activity / regulation of multicellular organism growth / response to axon injury / ovarian follicle development / dendrite cytoplasm / embryo implantation / glutathione metabolic process / removal of superoxide radicals / reactive oxygen species metabolic process / regulation of mitochondrial membrane potential / positive regulation of cytokine production / locomotory behavior / sensory perception of sound / response to hydrogen peroxide / regulation of blood pressure / protein polyubiquitination / ubiquitin-protein transferase activity / peroxisome / protein-folding chaperone binding / response to heat / cytoplasmic vesicle / spermatogenesis / negative regulation of neuron apoptotic process / response to ethanol / proteasome-mediated ubiquitin-dependent protein catabolic process / intracellular iron ion homeostasis / positive regulation of MAPK cascade / copper ion binding / neuronal cell body / protein homodimerization activity / protein-containing complex / mitochondrion / zinc ion binding / nucleus / cytosol / cytoplasm
Similarity search - Function
Superoxide dismutase, copper/zinc binding domain / Copper/Zinc superoxide dismutase signature 1. / Superoxide dismutase (Cu/Zn) / superoxide dismutase copper chaperone / Superoxide dismutase, copper/zinc, binding site / Copper/Zinc superoxide dismutase signature 2. / Superoxide dismutase, copper/zinc binding domain / Copper/zinc superoxide dismutase (SODC) / Superoxide dismutase-like, copper/zinc binding domain superfamily / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
COPPER (II) ION / Superoxide dismutase [Cu-Zn]
Similarity search - Component
Biological speciesBos taurus (domestic cattle)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsFerraroni, M. / Rypniewski, W.R. / Bruni, B. / Orioli, P. / Wilson, K.S. / Mangani, S.
CitationJournal: J.Biol.Inorg.Chem. / Year: 1998
Title: Crystallographic determination of reduced bovine superoxide dismutase at pH 5.0 and of anion binding to its active site.
Authors: Ferraroni, M. / Rypniewski, W.R. / Bruni, B. / Orioli, P. / Mangani, S.
History
DepositionSep 17, 1997Processing site: BNL
Revision 1.0Mar 18, 1998Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 16, 2011Group: Atomic model
Revision 1.4Aug 9, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: database_2 / diffrn_source ...database_2 / diffrn_source / pdbx_initial_refinement_model / 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 / _diffrn_source.pdbx_synchrotron_site / _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
Revision 1.5Oct 30, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / 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: CU, ZN SUPEROXIDE DISMUTASE
B: CU, ZN SUPEROXIDE DISMUTASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)31,4858
Polymers31,1472
Non-polymers3386
Water6,630368
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1670 Å2
ΔGint-41 kcal/mol
Surface area12910 Å2
MethodPISA
Unit cell
Length a, b, c (Å)104.690, 197.800, 50.830
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221
Components on special symmetry positions
IDModelComponents
11B-271-

HOH

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Components

#1: Protein CU, ZN SUPEROXIDE DISMUTASE / SOD


Mass: 15573.337 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Bos taurus (domestic cattle) / Cell: ERYTHROCYTE / Cellular location: CYTOPLASM / Tissue: BLOOD / References: UniProt: P00442, superoxide dismutase
#2: Chemical ChemComp-CU / COPPER (II) ION


Mass: 63.546 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cu
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 368 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY
Nonpolymer detailsLIKE IN 1SXA,1SXB AND 1SXC STRUCTURES, GLU 119 IN BOTH SUBUNITS APPEARS TO BE COVALENTLY MODIFIED. ...LIKE IN 1SXA,1SXB AND 1SXC STRUCTURES, GLU 119 IN BOTH SUBUNITS APPEARS TO BE COVALENTLY MODIFIED. THE NATURE OF THE MODIFICATION IS UNKNOWN AND THE ELECTRON DENSITY OCCURRING CLOSE TO ITS SIDE CHAIN HAS BEEN TENTATIVELY MODELED AS CALCIUM IONS AT 0.5 OCCUPANCY (CA 154 A AND CA 154 B). SEE PDB ENTRY 1SXC.

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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: 4.5 Å3/Da / Density % sol: 73 %
Crystal growMethod: excess nitrogen atmosphere / pH: 5
Details: 20 % PEG6K, 20MM HEPES PH 5.0, SODIUM DITHIONITE (EXCESS), NITROGEN ATMOSPHERE, excess nitrogen atmosphere
Crystal grow
*PLUS
Temperature: 22 ℃ / Method: free interface diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
120 %PEG600011
27 mg/mlprotein12

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Data collection

DiffractionMean temperature: 277 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, HAMBURG / Beamline: X11 / Wavelength: 0.92
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Nov 1, 1995 / Details: MIRRORS
RadiationMonochromator: SI(111) / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.92 Å / Relative weight: 1
ReflectionResolution: 1.9→20 Å / Num. obs: 209202 / % possible obs: 97.2 % / Redundancy: 5 % / Rmerge(I) obs: 0.091 / Rsym value: 0.95 / Net I/σ(I): 8.5
Reflection shellResolution: 1.9→1.95 Å / Redundancy: 3.4 % / Rmerge(I) obs: 0.075 / Mean I/σ(I) obs: 3.5 / Rsym value: 0.299 / % possible all: 98
Reflection
*PLUS
Num. obs: 41816 / Num. measured all: 209202
Reflection shell
*PLUS
% possible obs: 98 %

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CCP4refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1SXC

1sxc


Resolution: 1.9→10 Å
RfactorNum. reflection% reflection
Rwork0.18 --
all-38968 -
obs-38968 98 %
Displacement parametersBiso mean: 25.2 Å2
Refine analyzeLuzzati d res low obs: 10 Å / Luzzati sigma a obs: 0.2 Å
Refinement stepCycle: LAST / Resolution: 1.9→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2128 0 8 376 2512
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONp_bond_d0.0140.02
X-RAY DIFFRACTIONp_angle_d0.0460.05
X-RAY DIFFRACTIONp_angle_deg
X-RAY DIFFRACTIONp_planar_d0.0440.05
X-RAY DIFFRACTIONp_hb_or_metal_coord
X-RAY DIFFRACTIONp_mcbond_it2.3963
X-RAY DIFFRACTIONp_mcangle_it3.6454
X-RAY DIFFRACTIONp_scbond_it4.7284.5
X-RAY DIFFRACTIONp_scangle_it7.0266
X-RAY DIFFRACTIONp_plane_restr0.0110.02
X-RAY DIFFRACTIONp_chiral_restr0.1420.15
X-RAY DIFFRACTIONp_singtor_nbd0.1930.3
X-RAY DIFFRACTIONp_multtor_nbd0.2570.3
X-RAY DIFFRACTIONp_xhyhbond_nbd
X-RAY DIFFRACTIONp_xyhbond_nbd0.2090.3
X-RAY DIFFRACTIONp_planar_tor1.812.5
X-RAY DIFFRACTIONp_staggered_tor12.35710
X-RAY DIFFRACTIONp_orthonormal_tor
X-RAY DIFFRACTIONp_transverse_tor35.7725
X-RAY DIFFRACTIONp_special_tor15
Software
*PLUS
Name: CCP4 / Classification: refinement
Refinement
*PLUS
Rfactor obs: 0.184
Solvent computation
*PLUS
Displacement parameters
*PLUS

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