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- PDB-2vbg: The complex structure of the branched-chain keto acid decarboxyla... -

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Basic information

Entry
Database: PDB / ID: 2vbg
TitleThe complex structure of the branched-chain keto acid decarboxylase (KdcA) from Lactococcus lactis with 2R-1-hydroxyethyl-deazaThDP
ComponentsBRANCHED-CHAIN ALPHA-KETOACID DECARBOXYLASE
KeywordsLYASE / KDCA / FLAVOPROTEIN / THDP-DEPENDENT ENZYMES / THIAMINE PYROPHOSPHATE
Function / homology
Function and homology information


branched-chain-2-oxoacid decarboxylase activity / : / pyruvate decarboxylase activity / branched-chain amino acid biosynthetic process / thiamine pyrophosphate binding / magnesium ion binding / cytosol
Similarity search - Function
: / Thiamine pyrophosphate (TPP)-dependent enzyme / : / Thiamine pyrophosphate enzyme, central domain / Thiamine pyrophosphate enzyme, central domain / Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain / Thiamine pyrophosphate enzyme, N-terminal TPP binding domain / Thiamine pyrophosphate enzyme, C-terminal TPP-binding / Thiamine pyrophosphate enzyme, C-terminal TPP binding domain / Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains ...: / Thiamine pyrophosphate (TPP)-dependent enzyme / : / Thiamine pyrophosphate enzyme, central domain / Thiamine pyrophosphate enzyme, central domain / Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain / Thiamine pyrophosphate enzyme, N-terminal TPP binding domain / Thiamine pyrophosphate enzyme, C-terminal TPP-binding / Thiamine pyrophosphate enzyme, C-terminal TPP binding domain / Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains / TPP-binding domain / Thiamin diphosphate-binding fold / DHS-like NAD/FAD-binding domain superfamily / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Chem-R1T / Alpha-keto-acid decarboxylase
Similarity search - Component
Biological speciesLACTOCOCCUS LACTIS (lactic acid bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsBerthold, C.L. / Gocke, D. / Wood, M.D. / Leeper, F. / Pohl, M. / Schneider, G.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2007
Title: Crystal Structure of the Branched-Chain Keto Acid Decarboxylase (Kdca) from Lactococcus Lactis Provides Insights Into the Structural Basis for the Chemo- and Enantioselective Carboligation Reaction
Authors: Berthold, C.L. / Gocke, D. / Wood, M.D. / Leeper, F. / Pohl, M. / Schneider, G.
History
DepositionSep 12, 2007Deposition site: PDBE / Processing site: PDBE
Revision 1.0Nov 27, 2007Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Dec 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.status_code_sf / _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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: BRANCHED-CHAIN ALPHA-KETOACID DECARBOXYLASE
B: BRANCHED-CHAIN ALPHA-KETOACID DECARBOXYLASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)127,7966
Polymers126,8132
Non-polymers9834
Water17,114950
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area8240 Å2
ΔGint-57.9 kcal/mol
Surface area46090 Å2
MethodPQS
Unit cell
Length a, b, c (Å)65.977, 108.578, 146.529
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
Noncrystallographic symmetry (NCS)NCS oper:
IDCodeMatrixVector
1given(0.441, 0.646, 0.623), (0.644, -0.711, 0.281), (0.625, 0.278, -0.73)18.85143, 3.23323, -46.86024
2given(0.424, 0.659, 0.621), (0.673, -0.688, 0.271), (0.606, 0.303, -0.736)18.77675, 1.38169, -47.38548

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Components

#1: Protein BRANCHED-CHAIN ALPHA-KETOACID DECARBOXYLASE / BRANCHED-CHAIN KETO ACID DECARBOXYLASE


Mass: 63406.539 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Details: CHAIN A AND B CONTAIN THE COMPLETE ENZYME SEQUENCE AND SHORT N-TERMINAL TAGS WITH LINKERS, WHICH ARE BOUND IN ADJACENT DIMERS IN THE CRYSTAL.
Source: (gene. exp.) LACTOCOCCUS LACTIS (lactic acid bacteria)
Plasmid: PET28A / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21 (DE3) / References: UniProt: Q6QBS4
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#3: Chemical ChemComp-R1T / 2-{4-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-5-[(1R)-1-HYDROXYETHYL]-3-METHYL-2-THIENYL}ETHYL TRIHYDROGEN DIPHOSPHATE / 2-[(1R)-1-HYDROXYETHYL]-3-DEAZA-THDP


Mass: 467.371 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C15H23N3O8P2S
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 950 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsTHE PROTEIN CONTAINS A 23 AMINO ACID N-TERMINAL EXTENSION, MGSSHHHHHHSSGLVPRGSHMAS

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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: 1.95 Å3/Da / Density % sol: 36.3 % / Description: NONE

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-3 / Wavelength: 0.931
DetectorType: ADSC CCD / Detector: CCD / Date: May 18, 2007 / Details: TOROIDAL MIRROR
RadiationMonochromator: DIAMOND (111), GE(220) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.931 Å / Relative weight: 1
ReflectionResolution: 1.8→56.34 Å / Num. obs: 95616 / % possible obs: 97.4 % / Observed criterion σ(I): 6 / Redundancy: 3.6 % / Rmerge(I) obs: 0.09 / Net I/σ(I): 13.1
Reflection shellResolution: 1.8→1.9 Å / Redundancy: 2.4 % / Rmerge(I) obs: 0.38 / Mean I/σ(I) obs: 2.1 / % possible all: 85.2

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Processing

Software
NameVersionClassification
REFMAC5.2.0019refinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2VBF

2vbf


Resolution: 1.8→30 Å / Cor.coef. Fo:Fc: 0.959 / Cor.coef. Fo:Fc free: 0.936 / SU B: 2.734 / SU ML: 0.085 / Cross valid method: THROUGHOUT / ESU R: 0.13 / ESU R Free: 0.124 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. RESIDUE 182-187 HAVE NOT BEEN MODELED DUE TO LACK OF ELECTRON DENSITY
RfactorNum. reflection% reflectionSelection details
Rfree0.205 4792 5 %RANDOM
Rwork0.163 ---
obs0.165 90719 97.3 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 12.25 Å2
Baniso -1Baniso -2Baniso -3
1--0.37 Å20 Å20 Å2
2---0.99 Å20 Å2
3---1.36 Å2
Refinement stepCycle: LAST / Resolution: 1.8→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms8543 0 60 950 9553
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0080.0228858
X-RAY DIFFRACTIONr_bond_other_d0.0010.025900
X-RAY DIFFRACTIONr_angle_refined_deg1.1311.97312018
X-RAY DIFFRACTIONr_angle_other_deg0.8973.00114497
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.51551117
X-RAY DIFFRACTIONr_dihedral_angle_2_deg38.38225.427398
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.391151563
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.7791530
X-RAY DIFFRACTIONr_chiral_restr0.0680.21368
X-RAY DIFFRACTIONr_gen_planes_refined0.0040.029816
X-RAY DIFFRACTIONr_gen_planes_other0.0010.021694
X-RAY DIFFRACTIONr_nbd_refined0.1960.21789
X-RAY DIFFRACTIONr_nbd_other0.1770.26157
X-RAY DIFFRACTIONr_nbtor_refined0.1680.24380
X-RAY DIFFRACTIONr_nbtor_other0.080.24227
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.140.2771
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1410.216
X-RAY DIFFRACTIONr_symmetry_vdw_other0.1090.223
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.130.229
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.5071.55637
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it0.82128842
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it1.30133654
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it2.1034.53161
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.8→1.85 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.32 316
Rwork0.253 5534

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