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- PDB-3dg7: Crystal structure of muconate lactonizing enzyme from Mucobacteri... -

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Basic information

Entry
Database: PDB / ID: 3dg7
TitleCrystal structure of muconate lactonizing enzyme from Mucobacterium Smegmatis complexed with muconolactone
ComponentsMuconate cycloisomeraseMuconate lactonizing enzyme
KeywordsISOMERASE / muconate lactonizing enzyme / muconolactone binding
Function / homology
Function and homology information


menaquinone biosynthetic process / catalytic activity / metal ion binding
Similarity search - Function
Muconate cycloisomerase (anti) / Mandelate racemase/muconate lactonizing enzyme, N-terminal domain / Mandelate racemase / muconate lactonizing enzyme, N-terminal domain / Mandelate racemase/muconate lactonizing enzyme, C-terminal / Mandelate racemase / muconate lactonizing enzyme, C-terminal domain / Enolase C-terminal domain-like / Enolase C-terminal domain-like / Enolase-like C-terminal domain / Enolase-like, N-terminal domain / Enolase-like, N-terminal ...Muconate cycloisomerase (anti) / Mandelate racemase/muconate lactonizing enzyme, N-terminal domain / Mandelate racemase / muconate lactonizing enzyme, N-terminal domain / Mandelate racemase/muconate lactonizing enzyme, C-terminal / Mandelate racemase / muconate lactonizing enzyme, C-terminal domain / Enolase C-terminal domain-like / Enolase C-terminal domain-like / Enolase-like C-terminal domain / Enolase-like, N-terminal domain / Enolase-like, N-terminal / Enolase-like, C-terminal domain superfamily / Enolase-like; domain 1 / TIM Barrel / Alpha-Beta Barrel / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
[(2S)-5-oxo-2,5-dihydrofuran-2-yl]acetic acid / Muconate cycloisomerase
Similarity search - Component
Biological speciesMycobacterium smegmatis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsFedorov, A.A. / Fedorov, E.V. / Sakai, A. / Gerlt, J.A. / Almo, S.C.
CitationJournal: Biochemistry / Year: 2009
Title: Evolution of enzymatic activities in the enolase superfamily: stereochemically distinct mechanisms in two families of cis,cis-muconate lactonizing enzymes
Authors: Sakai, A. / Fedorov, A.A. / Fedorov, E.V. / Schnoes, A.M. / Glasner, M.E. / Brown, S. / Rutter, M.E. / Bain, K. / Chang, S. / Gheyi, T. / Sauder, J.M. / Burley, S.K. / Babbitt, P.C. / Almo, S.C. / Gerlt, J.A.
History
DepositionJun 12, 2008Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Mar 3, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Source and taxonomy / Version format compliance
Revision 1.2Feb 3, 2021Group: Database references / Derived calculations / Category: citation_author / struct_conn / struct_site
Item: _citation_author.identifier_ORCID / _struct_conn.pdbx_dist_value ..._citation_author.identifier_ORCID / _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_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.3Mar 20, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Muconate cycloisomerase
B: Muconate cycloisomerase
C: Muconate cycloisomerase
D: Muconate cycloisomerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)160,74412
Polymers160,0784
Non-polymers6668
Water14,214789
1
A: Muconate cycloisomerase
B: Muconate cycloisomerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,3726
Polymers80,0392
Non-polymers3334
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2290 Å2
ΔGint-8 kcal/mol
Surface area25760 Å2
MethodPISA
2
C: Muconate cycloisomerase
D: Muconate cycloisomerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,3726
Polymers80,0392
Non-polymers3334
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2290 Å2
ΔGint-8 kcal/mol
Surface area25790 Å2
MethodPISA
Unit cell
Length a, b, c (Å)171.047, 124.265, 117.485
Angle α, β, γ (deg.)90.00, 133.39, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11C-2174-

HOH

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Components

#1: Protein
Muconate cycloisomerase / Muconate lactonizing enzyme


Mass: 40019.531 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mycobacterium smegmatis (bacteria) / Strain: MC2 155 / Production host: Escherichia coli (E. coli)
References: UniProt: A0QTN8, Isomerases; Intramolecular lyases
#2: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#3: Chemical
ChemComp-MUC / [(2S)-5-oxo-2,5-dihydrofuran-2-yl]acetic acid / muconolactone


Mass: 142.109 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C6H6O4
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 789 / 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: 2.83 Å3/Da / Density % sol: 56.6 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 1.0M Ammonium sulfate, 0.1M HEPES, 0.5% PEG 8000, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X4A / Wavelength: 0.97915 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Sep 3, 2007
RadiationMonochromator: Si 111 CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97915 Å / Relative weight: 1
ReflectionResolution: 2→25 Å / Num. all: 116011 / Num. obs: 116011 / % possible obs: 96.5 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Biso Wilson estimate: 13.6 Å2 / Rmerge(I) obs: 0.076

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Processing

Software
NameVersionClassification
CNS1.1refinement
ADSCQuantumdata collection
DENZOdata reduction
SCALEPACKdata scaling
BALBESphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2→24.42 Å / Rfactor Rfree error: 0.003 / Data cutoff high absF: 1840233.55 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.203 5812 5 %RANDOM
Rwork0.188 ---
all0.19 116011 --
obs0.188 116011 96.5 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 48.5231 Å2 / ksol: 0.372116 e/Å3
Displacement parametersBiso mean: 21.4 Å2
Baniso -1Baniso -2Baniso -3
1--0.4 Å20 Å20.78 Å2
2--2.11 Å20 Å2
3----1.71 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.23 Å0.2 Å
Luzzati d res low-5 Å
Luzzati sigma a0.11 Å0.06 Å
Refinement stepCycle: LAST / Resolution: 2→24.42 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms11184 0 44 789 12017
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d22.8
X-RAY DIFFRACTIONc_improper_angle_d0.8
X-RAY DIFFRACTIONc_mcbond_it1.041.5
X-RAY DIFFRACTIONc_mcangle_it1.442
X-RAY DIFFRACTIONc_scbond_it1.762
X-RAY DIFFRACTIONc_scangle_it2.472.5
LS refinement shellResolution: 2→2.07 Å / Rfactor Rfree error: 0.012 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.246 438 4.7 %
Rwork0.202 8858 -
obs--77.3 %
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 DIFFRACTION4MCL_par.txtMCL_par.txt
X-RAY DIFFRACTION5&_1_PARAMETER_INFILE_5&_1_TOPOLOGY_INFILE_5

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