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- PDB-2hxk: Crystal structure of S-nitroso thioredoxin -

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Basic information

Entry
Database: PDB / ID: 2hxk
TitleCrystal structure of S-nitroso thioredoxin
ComponentsThioredoxin
KeywordsOXIDOREDUCTASE / S-nitrosation / S-nitrosocysteine
Function / homology
Function and homology information


Protein repair / cellular detoxification of hydrogen peroxide / positive regulation of peptidyl-cysteine S-nitrosylation / protein-disulfide reductase (NAD(P)H) activity / thioredoxin-disulfide reductase (NADPH) activity / Interconversion of nucleotide di- and triphosphates / negative regulation of protein export from nucleus / Regulation of FOXO transcriptional activity by acetylation / NFE2L2 regulating anti-oxidant/detoxification enzymes / response to nitric oxide ...Protein repair / cellular detoxification of hydrogen peroxide / positive regulation of peptidyl-cysteine S-nitrosylation / protein-disulfide reductase (NAD(P)H) activity / thioredoxin-disulfide reductase (NADPH) activity / Interconversion of nucleotide di- and triphosphates / negative regulation of protein export from nucleus / Regulation of FOXO transcriptional activity by acetylation / NFE2L2 regulating anti-oxidant/detoxification enzymes / response to nitric oxide / Detoxification of Reactive Oxygen Species / The NLRP3 inflammasome / protein-disulfide reductase activity / positive regulation of DNA binding / Purinergic signaling in leishmaniasis infection / activation of protein kinase B activity / cell redox homeostasis / TP53 Regulates Metabolic Genes / response to radiation / positive regulation of peptidyl-serine phosphorylation / Oxidative Stress Induced Senescence / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / negative regulation of transcription by RNA polymerase II / protein homodimerization activity / RNA binding / extracellular exosome / extracellular region / nucleoplasm / nucleus / cytosol / cytoplasm
Similarity search - Function
Thioredoxin / Thioredoxin / Thioredoxin, conserved site / Thioredoxin family active site. / Thioredoxin domain profile. / Thioredoxin domain / Glutaredoxin / Glutaredoxin / Thioredoxin-like superfamily / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
ETHANOL / Thioredoxin / :
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.65 Å
AuthorsWeichsel, A. / Montfort, W.R.
Citation
Journal: Biochemistry / Year: 2007
Title: Buried s-nitrosocysteine revealed in crystal structures of human thioredoxin.
Authors: Weichsel, A. / Brailey, J.L. / Montfort, W.R.
#1: Journal: Structure / Year: 1996
Title: Crystal structures of reduced, oxidized, and mutated human thioredoxins: evidence for a regulatory homodimer
Authors: Weichsel, A. / Gasdaska, J.R. / Powis, G. / Montfort, W.R.
History
DepositionAug 3, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 5, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 30, 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 / 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 / _struct_conn.pdbx_leaving_atom_flag / _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: Thioredoxin
B: Thioredoxin
C: Thioredoxin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,5646
Polymers35,4253
Non-polymers1383
Water2,504139
1
A: Thioredoxin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)11,8552
Polymers11,8081
Non-polymers461
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Thioredoxin


Theoretical massNumber of molelcules
Total (without water)11,8081
Polymers11,8081
Non-polymers00
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
C: Thioredoxin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)11,9013
Polymers11,8081
Non-polymers922
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)116.350, 25.740, 86.020
Angle α, β, γ (deg.)90.00, 98.20, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein Thioredoxin /


Mass: 11808.474 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TXN / Plasmid: pet-3a / Production host: Escherichia coli (E. coli) / References: UniProt: Q5T937, UniProt: P10599*PLUS
#2: Chemical ChemComp-EOH / ETHANOL / Ethanol


Mass: 46.068 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C2H6O
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 139 / 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: 1.66 Å3/Da / Density % sol: 25.13 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 32% PEG 1500, 50 mM sodium phosphate, ethanol, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU300 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Mar 8, 2006 / Details: osmic mirrors
RadiationMonochromator: osmic mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.65→24.2 Å / Num. all: 29229 / Num. obs: 29229 / % possible obs: 99 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 2.7 % / Biso Wilson estimate: 26 Å2 / Rmerge(I) obs: 0.04 / Net I/σ(I): 16.1
Reflection shellResolution: 1.65→1.71 Å / Redundancy: 2.2 % / Rmerge(I) obs: 0.14 / Mean I/σ(I) obs: 3.6 / Num. unique all: 3122 / % possible all: 99.9

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Processing

Software
NameVersionClassification
REFMAC5.2.0019refinement
CrystalClear(MSC/RIGAKU)data collection
CrystalClear(MSC/RIGAKU)data reduction
CrystalClear(MSC/RIGAKU)data scaling
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1ERT

1ert


Resolution: 1.65→24.2 Å / Cor.coef. Fo:Fc: 0.948 / Cor.coef. Fo:Fc free: 0.93 / SU B: 2.223 / SU ML: 0.079 / Isotropic thermal model: isotropic / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R: 0.133 / ESU R Free: 0.127 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.23919 1576 5.1 %RANDOM
Rwork0.19489 ---
obs0.19714 29229 98.88 %-
all-29229 --
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 13.156 Å2
Baniso -1Baniso -2Baniso -3
1--0.37 Å20 Å20.01 Å2
2--0.24 Å20 Å2
3---0.13 Å2
Refine analyzeLuzzati coordinate error obs: 0.189 Å
Refinement stepCycle: LAST / Resolution: 1.65→24.2 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2741 0 0 152 2893
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0210.0222824
X-RAY DIFFRACTIONr_bond_other_d0.0010.021913
X-RAY DIFFRACTIONr_angle_refined_deg1.8611.973831
X-RAY DIFFRACTIONr_angle_other_deg1.0683.0034746
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.8775375
X-RAY DIFFRACTIONr_dihedral_angle_2_deg27.80526.231130
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.86915542
X-RAY DIFFRACTIONr_chiral_restr0.1810.2411
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.023286
X-RAY DIFFRACTIONr_gen_planes_other0.0020.02535
X-RAY DIFFRACTIONr_nbd_refined0.230.2591
X-RAY DIFFRACTIONr_nbd_other0.1890.21873
X-RAY DIFFRACTIONr_nbtor_refined0.1750.21387
X-RAY DIFFRACTIONr_nbtor_other0.0880.21407
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.2610.2127
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2970.252
X-RAY DIFFRACTIONr_symmetry_vdw_other0.2450.2102
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1530.232
X-RAY DIFFRACTIONr_mcbond_it1.6241.52311
X-RAY DIFFRACTIONr_mcbond_other0.3841.5703
X-RAY DIFFRACTIONr_mcangle_it1.8222894
X-RAY DIFFRACTIONr_scbond_it2.98831230
X-RAY DIFFRACTIONr_scangle_it4.14.5937
LS refinement shellResolution: 1.65→1.693 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.338 127 -
Rwork0.307 2139 -
obs-2129 99.96 %

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