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- PDB-1olx: Roles of His291-alpha and His146-beta' in the reductive acylation... -

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Entry
Database: PDB / ID: 1olx
TitleRoles of His291-alpha and His146-beta' in the reductive acylation reaction catalyzed by human branched-chain alpha-ketoacid dehydrogenase
Components(2-OXOISOVALERATE DEHYDROGENASE ...) x 2
KeywordsOXIDOREDUCTASE / KETOACID DEHYDROGENASE / BRANCHED-CHAIN / MULTI-ENZYME COMPLEX / ACYLATION / OXIDATIVE DECARBOXYLATION OXIDOREDUCTASE / MAPLE SYRUP URINE DISEASE / THIAMINE PHOSPHATE
Function / homology
Function and homology information


Loss-of-function mutations in BCKDHA or BCKDHB cause MSUD / 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) / branched-chain 2-oxo acid dehydrogenase activity / branched-chain alpha-ketoacid dehydrogenase complex / BCKDH synthesizes BCAA-CoA from KIC, KMVA, KIV / Loss-of-function mutations in DBT cause MSUD2 / Loss-of-function mutations in DLD cause MSUD3/DLDD / H139Hfs13* PPM1K causes a mild variant of MSUD / Branched-chain ketoacid dehydrogenase kinase deficiency / branched-chain amino acid catabolic process ...Loss-of-function mutations in BCKDHA or BCKDHB cause MSUD / 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) / branched-chain 2-oxo acid dehydrogenase activity / branched-chain alpha-ketoacid dehydrogenase complex / BCKDH synthesizes BCAA-CoA from KIC, KMVA, KIV / Loss-of-function mutations in DBT cause MSUD2 / Loss-of-function mutations in DLD cause MSUD3/DLDD / H139Hfs13* PPM1K causes a mild variant of MSUD / Branched-chain ketoacid dehydrogenase kinase deficiency / branched-chain amino acid catabolic process / Branched-chain amino acid catabolism / carboxy-lyase activity / response to nutrient / lipid metabolic process / mitochondrial matrix / nucleolus / mitochondrion / nucleoplasm / 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, mitochondrial / 2-oxoisovalerate dehydrogenase subunit beta, mitochondrial
Similarity search - Component
Biological speciesHOMO SAPIENS (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.25 Å
AuthorsWynn, R.M. / Machius, M. / Chuang, J.L. / Li, J. / Tomchick, D.R. / Chuang, D.T.
Citation
Journal: J.Biol.Chem. / Year: 2003
Title: Roles of His291-Alpha and His146-Beta' in the Reductive Acylation Reaction Catalyzed by Human Branched-Chain Alpha-Ketoacid Dehydrogenase: Refined Phosphorylation Loop Structure in the Active Site.
Authors: Wynn, R.M. / Machius, M. / Chuang, J.L. / Li, J. / Tomchick, D.R. / Chuang, D.T.
#1: Journal: J.Biol.Chem. / Year: 2001
Title: Roles of Active Site and Novel K+ Ion-Binding Site Residues in Human Mitochondrial Branched-Chain Alpha-Ketoacid Decarboxylase/Dehydrogenase
Authors: Wynn, R.M. / Ho, R. / Chuang, J.L. / Chuang, D.T.
#2: Journal: Structure / Year: 2000
Title: Crystal Structure of Human Branched-Chain Alpha-Ketoacid Dehydrogenase and the Molecular Basis of Multienzyme Complex Deficiency in Maple Syrup Urine Disease
Authors: Aevarsson, A. / Chuang, J.L. / Wynn, R.M. / Turley, S. / Chuang, D.T. / Hol, W.G.J.
History
DepositionAug 18, 2003Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 28, 2003Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3May 15, 2019Group: Data collection / Experimental preparation / Other
Category: exptl_crystal_grow / pdbx_database_proc / pdbx_database_status
Item: _exptl_crystal_grow.temp / _pdbx_database_status.recvd_author_approval
Revision 1.4Sep 25, 2019Group: Data collection / Experimental preparation / Other / Category: exptl_crystal_grow / pdbx_database_status
Item: _exptl_crystal_grow.method / _pdbx_database_status.status_code_sf
Revision 2.0Aug 4, 2021Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Non-polymer description / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / 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 / _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 2.1Dec 13, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 2-OXOISOVALERATE DEHYDROGENASE ALPHA SUBUNIT
B: 2-OXOISOVALERATE DEHYDROGENASE BETA SUBUNIT
hetero molecules


Theoretical massNumber of molelcules
Total (without water)84,1498
Polymers83,4062
Non-polymers7436
Water6,684371
1
A: 2-OXOISOVALERATE DEHYDROGENASE ALPHA SUBUNIT
B: 2-OXOISOVALERATE DEHYDROGENASE BETA SUBUNIT
hetero molecules

A: 2-OXOISOVALERATE DEHYDROGENASE ALPHA SUBUNIT
B: 2-OXOISOVALERATE DEHYDROGENASE BETA SUBUNIT
hetero molecules


Theoretical massNumber of molelcules
Total (without water)168,29816
Polymers166,8134
Non-polymers1,48512
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation5_555x-y,-y,-z+2/31
MethodPQS
Unit cell
Length a, b, c (Å)145.216, 145.216, 69.521
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

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2-OXOISOVALERATE DEHYDROGENASE ... , 2 types, 2 molecules AB

#1: Protein 2-OXOISOVALERATE DEHYDROGENASE ALPHA SUBUNIT / BRANCHED-CHAIN ALPHA-KETOACID DEHYDROGENASE E1 COMPONENT ALPHA CHAIN / BCKDH E1-ALPHA


Mass: 45571.098 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HOMO SAPIENS (human) / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): CG-712 (ES TS)
References: UniProt: P12694, 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)
#2: Protein 2-OXOISOVALERATE DEHYDROGENASE BETA SUBUNIT / BRANCHED-CHAIN ALPHA-KETO ACID DEHYDROGENASE E1 COMPONENT BETA CHAIN / BCKDH E1-BETA


Mass: 37835.203 Da / Num. of mol.: 1 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HOMO SAPIENS (human) / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): CG-712 (ES TS)
References: UniProt: P21953, 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)

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Non-polymers , 5 types, 377 molecules

#3: Chemical ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: K
#4: Chemical ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mn
#5: Chemical ChemComp-TPP / THIAMINE DIPHOSPHATE


Mass: 425.314 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C12H19N4O7P2S
#6: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C3H8O3
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 371 / Source method: isolated from a natural source / Formula: H2O

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Details

Compound detailsTHE BRANCHED-CHAIN ALPHA-KETO DEHYDROGENASE COMPLEX CATALYZES CONVERSION OF ALPHA-KETO ACIDS TO ...THE BRANCHED-CHAIN ALPHA-KETO DEHYDROGENASE COMPLEX CATALYZES CONVERSION OF ALPHA-KETO ACIDS TO ACYL-COA AND CO(2). CONTAINS MULTIPLE COPIES OF 3 ENZYMATIC COMPONENTS: BRANCHED-CHAIN ALPHA-KETO ACID DECARBOXYLASE (E1), LIPOAMIDE ACYLTRANSFERASE (E2) AND LIPOAMIDE DEHYDROGENASE (E3). REQUIRES THIAMINE PYROPHOSPHATE AS A COFACTOR AND EXISTS AS A HETERODIMER OF AN ALPHA AND A BETA CHAIN. ENGINEERED MUTATION HIS 196 ALA, CHAIN B

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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: 2.5 Å3/Da / Density % sol: 51 %
Crystal growTemperature: 293 K / Method: vapor diffusion / pH: 5.5
Details: CRYSTALS WERE GROWN AT 20C VIA THE VAPOR DIFFUSION METHOD BY MIXING EQUAL AMOUNTS OF PROTEIN (20-25 MG/ML IN 50 MM HEPES/NAOH, PH 7.5, 250 MM KCL, 0.5 MM PMSF, 1 MM BENZAMIDINE AND 5% (V/V) ...Details: CRYSTALS WERE GROWN AT 20C VIA THE VAPOR DIFFUSION METHOD BY MIXING EQUAL AMOUNTS OF PROTEIN (20-25 MG/ML IN 50 MM HEPES/NAOH, PH 7.5, 250 MM KCL, 0.5 MM PMSF, 1 MM BENZAMIDINE AND 5% (V/V) GLYCEROL) WITH WELL SOLUTION (1.4-1.6 M AMMONIUM SULFATE, 0.1 M NA-CITRATE PH 5.8, 20 MM B-MERCAPTOETHANOL). SERIALLY DILUTED CRUSHED CRYSTALS WERE USED FOR MICRO-SEEDING ONE DAY AFTER THE DROPS WERE SET UP. CRYSTALS APPEARED ONE DAY AFTER SEEDING AND GREW TO A MAXIMUM SIZE OF 120 X 800 UM WITHIN 10 DAYS. CRYSTALS WERE STABILIZED FOR 12 HOURS BY TRANSFER TO FRESH WELL SOLUTION. THEY WERE THEN CRYO-PROTECTED BY STEP-WISE TRANSFER INTO CRYO-BUFFER CONTAINING 1.6 M AMMONIUM SULFATE, 50 MM HEPES, PH 7.5, 100 MM NA-CITRATE, PH 5.8,100 MM KCL, 50 MM DTT AND UP TO 20% (V/V) GLYCEROL. IT WAS FOUND THAT MN2+ IONS COULD REPLACE THE MG2+ REQUIRED FOR THE BINDING OF THDP TO THE ENZYME.

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 19-BM / Wavelength: 0.97923
DetectorDetector: CCD / Date: Mar 15, 2003
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97923 Å / Relative weight: 1
ReflectionResolution: 2.25→32.18 Å / Num. obs: 37471 / % possible obs: 93.3 % / Observed criterion σ(I): -3 / Redundancy: 2.2 % / Biso Wilson estimate: 11.5 Å2 / Rmerge(I) obs: 0.09 / Net I/σ(I): 10.2
Reflection shellResolution: 2.25→2.25 Å / Redundancy: 2.1 % / Rmerge(I) obs: 0.582 / Mean I/σ(I) obs: 1.6 / % possible all: 99.4

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Processing

Software
NameVersionClassification
CNS1.1refinement
HKL-2000data reduction
HKL-2000data scaling
CNS1.1phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1OLS

1ols


Resolution: 2.25→32.18 Å / Rfactor Rfree error: 0.006 / Data cutoff high absF: 372026.51 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
Details: THE FOLLOWING REGION HAD VERY POOR ELECTRON DENSITY: ALPHA CHAIN: RESIDUES 183-184, 294, 296, 298-300,307-312 BETA CHAIN: RESIDUES 5, 14, 17, 235. SIDE CHAINS OF THE FOLLOWING RESIDUES DID ...Details: THE FOLLOWING REGION HAD VERY POOR ELECTRON DENSITY: ALPHA CHAIN: RESIDUES 183-184, 294, 296, 298-300,307-312 BETA CHAIN: RESIDUES 5, 14, 17, 235. SIDE CHAINS OF THE FOLLOWING RESIDUES DID HAVE POORLY DEFINED ELECTRON DENSITY AND WERE MODELLED STEREOCHEMICALLY: ALPHA CHAIN: K19, A183, E331, K335, R338, K339, Q387 BETA CHAIN: Q7
RfactorNum. reflection% reflectionSelection details
Rfree0.214 1442 4.1 %RANDOM
Rwork0.161 ---
obs0.161 35544 88.4 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 45.6078 Å2 / ksol: 0.378655 e/Å3
Displacement parametersBiso mean: 22.2 Å2
Baniso -1Baniso -2Baniso -3
1-2.63 Å24.2 Å20 Å2
2--2.63 Å20 Å2
3----5.26 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.27 Å0.19 Å
Luzzati d res low-5 Å
Luzzati sigma a0.27 Å0.25 Å
Refinement stepCycle: LAST / Resolution: 2.25→32.18 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5751 0 41 371 6163
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.014
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_deg1.6
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d22.7
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.07
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.311.5
X-RAY DIFFRACTIONc_mcangle_it2.042
X-RAY DIFFRACTIONc_scbond_it2.212
X-RAY DIFFRACTIONc_scangle_it3.222.5
LS refinement shellResolution: 2.25→2.39 Å / Rfactor Rfree error: 0.018 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.278 248 4.4 %
Rwork0.221 5421 -
obs--85.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION3ION.PARAMION.TOP
X-RAY DIFFRACTION4TDP.PARAMTDP.TOP

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