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- PDB-7mf4: Crystal structure of Trypanosoma cruzi cytosolic Malic Enzyme -

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Basic information

Entry
Database: PDB / ID: 7mf4
TitleCrystal structure of Trypanosoma cruzi cytosolic Malic Enzyme
ComponentsMalic enzyme
KeywordsOXIDOREDUCTASE / cytosol
Function / homology
Function and homology information


malate dehydrogenase (decarboxylating) (NAD+) activity / malate metabolic process / pyruvate metabolic process / NAD binding / mitochondrion / metal ion binding / cytosol
Similarity search - Function
Malic enzyme, conserved site / Malic enzymes signature. / Malic oxidoreductase / Malic enzyme, N-terminal domain / Malic enzyme, N-terminal domain / Malic enzyme, NAD-binding / Malic enzyme, N-terminal domain superfamily / Malic enzyme, N-terminal domain / Malic enzyme, NAD binding domain / Malic enzyme, NAD binding domain ...Malic enzyme, conserved site / Malic enzymes signature. / Malic oxidoreductase / Malic enzyme, N-terminal domain / Malic enzyme, N-terminal domain / Malic enzyme, NAD-binding / Malic enzyme, N-terminal domain superfamily / Malic enzyme, N-terminal domain / Malic enzyme, NAD binding domain / Malic enzyme, NAD binding domain / Aminoacid dehydrogenase-like, N-terminal domain superfamily / NAD(P)-binding domain superfamily
Similarity search - Domain/homology
CITRIC ACID / Malic enzyme
Similarity search - Component
Biological speciesTrypanosoma cruzi (eukaryote)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.55 Å
AuthorsRanzani, A.T. / Cordeiro, A.T.
Funding support Brazil, 2items
OrganizationGrant numberCountry
Sao Paulo Research Foundation (FAPESP)2013/03983-5 Brazil
Sao Paulo Research Foundation (FAPESP)2012/23682-7 Brazil
CitationJournal: Acs Infect Dis. / Year: 2021
Title: Trypanosoma cruzi Malic Enzyme Is the Target for Sulfonamide Hits from the GSK Chagas Box.
Authors: Mercaldi, G.F. / Eufrasio, A.G. / Ranzani, A.T. / do Nascimento Faria, J. / Mota, S.G.R. / Fagundes, M. / Bruder, M. / Cordeiro, A.T.
History
DepositionApr 8, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 28, 2021Provider: repository / Type: Initial release
Revision 1.1Aug 25, 2021Group: Database references / Category: citation / citation_author / database_2
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.2Oct 18, 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

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Assembly

Deposited unit
A: Malic enzyme
hetero molecules


Theoretical massNumber of molelcules
Total (without water)62,0413
Polymers61,6101
Non-polymers4302
Water6,179343
1
A: Malic enzyme
hetero molecules

A: Malic enzyme
hetero molecules


Theoretical massNumber of molelcules
Total (without water)124,0826
Polymers123,2212
Non-polymers8614
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation7_645y+1,x-1,-z1
Buried area5620 Å2
ΔGint-7 kcal/mol
Surface area42580 Å2
MethodPISA
Unit cell
Length a, b, c (Å)73.268, 73.268, 233.746
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number96
Space group name H-MP43212

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Components

#1: Protein Malic enzyme


Mass: 61610.406 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Trypanosoma cruzi (strain CL Brener) (eukaryote)
Strain: CL Brener / Gene: Tc00.1047053505183.30 / Plasmid: pET-SUMO / Production host: Escherichia coli (E. coli) / Strain (production host): Rosetta (DE3) pLysS / References: UniProt: Q4DJ68
#2: Chemical ChemComp-CIT / CITRIC ACID


Mass: 192.124 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H8O7
#3: Chemical ChemComp-EPE / 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID / HEPES


Mass: 238.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H18N2O4S / Comment: pH buffer*YM
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 343 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

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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: 2.55 Å3/Da / Density % sol: 51.77 %
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / pH: 7.5 / Details: 100 mM HEPES pH 7.5, 1.4 M trisodium citrate

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I03 / Wavelength: 0.9762 Å
DetectorType: DECTRIS PILATUS3 6M / Detector: PIXEL / Date: Dec 14, 2014
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9762 Å / Relative weight: 1
ReflectionResolution: 1.55→29.22 Å / Num. obs: 93475 / % possible obs: 100 % / Redundancy: 14.4 % / CC1/2: 0.999 / Rmerge(I) obs: 0.089 / Net I/σ(I): 17.9
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique obsCC1/2% possible allRpim(I) all
1.55-1.5812.51.60945490.613100
8.49-29.2211.90.0396960.99997.60.011

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Processing

Software
NameVersionClassification
XDSdata reduction
Aimless0.7.4data scaling
REFMAC5.8.0267refinement
PDB_EXTRACT3.27data extraction
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3WJA

3wja


Resolution: 1.55→29.22 Å / Cor.coef. Fo:Fc: 0.969 / Cor.coef. Fo:Fc free: 0.959 / SU B: 1.566 / SU ML: 0.054 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.073 / ESU R Free: 0.073 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.2005 4595 4.9 %RANDOM
Rwork0.177 ---
obs0.1781 88750 99.97 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 82.8 Å2 / Biso mean: 23.033 Å2 / Biso min: 12.57 Å2
Baniso -1Baniso -2Baniso -3
1-0.59 Å20 Å2-0 Å2
2--0.59 Å2-0 Å2
3----1.19 Å2
Refinement stepCycle: final / Resolution: 1.55→29.22 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4281 0 28 343 4652
Biso mean--29.97 29.71 -
Num. residues----547
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0130.0134508
X-RAY DIFFRACTIONr_bond_other_d0.0010.0174351
X-RAY DIFFRACTIONr_angle_refined_deg1.9051.6476134
X-RAY DIFFRACTIONr_angle_other_deg1.5621.57610023
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.1265574
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.97722.198232
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.36315781
X-RAY DIFFRACTIONr_dihedral_angle_4_deg14.1111531
X-RAY DIFFRACTIONr_chiral_restr0.10.2588
X-RAY DIFFRACTIONr_gen_planes_refined0.0110.025156
X-RAY DIFFRACTIONr_gen_planes_other0.0010.021030
LS refinement shellResolution: 1.55→1.59 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.288 320 -
Rwork0.276 6473 -
all-6793 -
obs--100 %

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