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- PDB-1umb: branched-chain 2-oxo acid dehydrogenase (E1) from Thermus thermop... -

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Basic information

Entry
Database: PDB / ID: 1umb
Titlebranched-chain 2-oxo acid dehydrogenase (E1) from Thermus thermophilus HB8 in holo-form
Components
  • 2-oxo acid dehydrogenase alpha subunit
  • 2-oxo acid dehydrogenase beta subunit
KeywordsOXIDOREDUCTASE / alpha(2)beta(2) tetramer / structural genomics / RIKEN Structural Genomics/Proteomics Initiative / RSGI
Function / homology
Function and homology information


3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) / branched-chain 2-oxo acid dehydrogenase activity / branched-chain amino acid catabolic process / metal ion binding
Similarity search - Function
: / Transketolase, C-terminal domain / Dehydrogenase, E1 component / Dehydrogenase E1 component / Transketolase, C-terminal domain / Rossmann fold - #920 / Transketolase-like, pyrimidine-binding domain / Transketolase, pyrimidine binding domain / Transketolase, pyrimidine binding domain / Transketolase C-terminal/Pyruvate-ferredoxin oxidoreductase domain II ...: / Transketolase, C-terminal domain / Dehydrogenase, E1 component / Dehydrogenase E1 component / Transketolase, C-terminal domain / Rossmann fold - #920 / Transketolase-like, pyrimidine-binding domain / Transketolase, pyrimidine binding domain / Transketolase, pyrimidine binding domain / Transketolase C-terminal/Pyruvate-ferredoxin oxidoreductase domain II / Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains / Thiamin diphosphate-binding fold / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
THIAMINE DIPHOSPHATE / 2-oxoisovalerate dehydrogenase subunit alpha / 2-oxoisovalerate dehydrogenase subunit beta / 2-oxoisovalerate dehydrogenase subunit beta / 2-oxoisovalerate dehydrogenase subunit alpha
Similarity search - Component
Biological speciesThermus thermophilus (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsNakai, T. / Nakagawa, N. / Maoka, N. / Masui, R. / Kuramitsu, S. / Kamiya, N. / RIKEN Structural Genomics/Proteomics Initiative (RSGI)
CitationJournal: J.Mol.Biol. / Year: 2004
Title: Ligand-induced Conformational Changes and a Reaction Intermediate in Branched-chain 2-Oxo Acid Dehydrogenase (E1) from Thermus thermophilus HB8, as Revealed by X-ray Crystallography
Authors: Nakai, T. / Nakagawa, N. / Maoka, N. / Masui, R. / Kuramitsu, S. / Kamiya, N.
History
DepositionSep 25, 2003Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Mar 30, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 2.0Aug 18, 2021Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / Derived calculations / Non-polymer description / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_2 / entity / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_conn_angle / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.type / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _entity.formula_weight / _entity.pdbx_description / _pdbx_entity_nonpoly.comp_id / _pdbx_entity_nonpoly.name / _pdbx_nonpoly_scheme.mon_id / _pdbx_nonpoly_scheme.pdb_mon_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.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_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.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id / _struct_site_gen.auth_comp_id / _struct_site_gen.label_comp_id
Revision 2.1Oct 25, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 2-oxo acid dehydrogenase alpha subunit
B: 2-oxo acid dehydrogenase beta subunit
C: 2-oxo acid dehydrogenase alpha subunit
D: 2-oxo acid dehydrogenase beta subunit
hetero molecules


Theoretical massNumber of molelcules
Total (without water)154,2768
Polymers153,3774
Non-polymers8994
Water20,9691164
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area20610 Å2
ΔGint-134 kcal/mol
Surface area39670 Å2
MethodPISA
Unit cell
Length a, b, c (Å)127.629, 246.180, 137.052
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221
DetailsThe biological assembly is an alpha(2)beta(2) tetramer in the asymmetric unit.

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Components

#1: Protein 2-oxo acid dehydrogenase alpha subunit / E1-alpha


Mass: 41508.023 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermus thermophilus (bacteria) / Plasmid: pACYC184 / Production host: Escherichia coli (E. coli) / Strain (production host): BLR(DE3)
References: UniProt: P84129, UniProt: Q5SLR4*PLUS, 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)
#2: Protein 2-oxo acid dehydrogenase beta subunit / E1-beta


Mass: 35180.582 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermus thermophilus (bacteria) / Plasmid: pET11A / Production host: Escherichia coli (E. coli) / Strain (production host): BLR(DE3)
References: UniProt: P84130, UniProt: Q5SLR3*PLUS, 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-TPP / THIAMINE DIPHOSPHATE


Mass: 425.314 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C12H19N4O7P2S
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1164 / 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: 3.23 Å3/Da / Density % sol: 61.65 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 5.6
Details: lithium sulfate, sodium citrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SPring-8 / Beamline: BL44B2 / Wavelength: 1 Å
DetectorType: MARRESEARCH / Detector: CCD / Date: Sep 11, 2002
RadiationMonochromator: Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. all: 125154 / Num. obs: 125154 / % possible obs: 99.6 % / Observed criterion σ(I): 0 / Redundancy: 6.8 % / Biso Wilson estimate: 18.4 Å2 / Rmerge(I) obs: 0.067 / Net I/σ(I): 14.4
Reflection shellResolution: 2.1→2.18 Å / Redundancy: 6 % / Rmerge(I) obs: 0.169 / Mean I/σ(I) obs: 2.6 / Num. unique all: 12309 / % possible all: 99.1

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Processing

Software
NameVersionClassification
CNS1refinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1DTW

1dtw


Resolution: 2.1→19.99 Å / Rfactor Rfree error: 0.002 / Data cutoff high absF: 4221672.39 / 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
Rfree0.194 6289 5 %RANDOM
Rwork0.169 ---
all0.179 125017 --
obs0.179 125017 99.7 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 58.2455 Å2 / ksol: 0.373643 e/Å3
Displacement parametersBiso mean: 25 Å2
Baniso -1Baniso -2Baniso -3
1-4.62 Å20 Å20 Å2
2---4.47 Å20 Å2
3----0.15 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.22 Å0.19 Å
Luzzati d res low-5 Å
Luzzati sigma a0.14 Å0.13 Å
Refinement stepCycle: LAST / Resolution: 2.1→19.99 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms10675 0 54 1164 11893
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.005
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_d22.1
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.83
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: 2.1→2.23 Å / Rfactor Rfree error: 0.006 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.211 1074 5.2 %
Rwork0.194 19586 -
obs-20660 99.7 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAM
X-RAY DIFFRACTION3ION.PARAM
X-RAY DIFFRACTION4TDP.PARAM

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