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- PDB-6l7j: Quinolone synthase (QNS) from Aegle marmelos Correa., complexed w... -

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Basic information

Entry
Database: PDB / ID: 6l7j
TitleQuinolone synthase (QNS) from Aegle marmelos Correa., complexed with Coenzyme A
ComponentsType III polyketide synthasePolyketide synthase
KeywordsPLANT PROTEIN / Quinolone synthase / type III PKS
Function / homology
Function and homology information


polyketide biosynthetic process / acyltransferase activity, transferring groups other than amino-acyl groups
Similarity search - Function
Chalcone/stilbene synthase, active site / Chalcone and stilbene synthases active site. / Chalcone/stilbene synthase, N-terminal / Polyketide synthase, type III / Chalcone/stilbene synthase, C-terminal / Chalcone and stilbene synthases, C-terminal domain / Chalcone and stilbene synthases, N-terminal domain / Thiolase-like
Similarity search - Domain/homology
COENZYME A / Type III polyketide synthase
Similarity search - Component
Biological speciesAegle marmelos (bael)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 1.8 Å
AuthorsMallika, V. / Abhinav, K.V. / Frandsen, K.E.H. / Soniya, E.V.
Funding support India, Denmark, 2items
OrganizationGrant numberCountry
Council of Scientific & Industrial Research (CSIR)09/716(0178)/2018-EMR-1 dated 26.04.2018 India
Novo Nordisk FoundationNNF21OC0071799 Denmark
CitationJournal: Commun Biol / Year: 2024
Title: Structural and mechanistic insights into Quinolone Synthase to address its functional promiscuity
Authors: Mallika, V. / Abhinav, K.V. / Frandsen, K.E.H. / Soniya, E.V.
History
DepositionNov 1, 2019Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 4, 2020Provider: repository / Type: Initial release
Revision 1.1Nov 22, 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
Revision 2.0Mar 6, 2024Group: Advisory / Atomic model ...Advisory / Atomic model / Author supporting evidence / Data collection / Database references / Derived calculations / Non-polymer description / Other / Polymer sequence / Refinement description / Source and taxonomy / Structure summary
Category: atom_site / atom_sites ...atom_site / atom_sites / audit_author / chem_comp / chem_comp_atom / chem_comp_bond / citation_author / entity / entity_name_com / entity_poly / entity_poly_seq / entity_src_gen / pdbx_audit_support / pdbx_contact_author / pdbx_database_related / pdbx_distant_solvent_atoms / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_assembly_prop / pdbx_struct_mod_residue / pdbx_struct_sheet_hbond / pdbx_struct_special_symmetry / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_close_contact / pdbx_validate_planes / pdbx_validate_torsion / refine / refine_hist / refine_ls_restr / refine_ls_shell / software / struct_conf / struct_conn / struct_mon_prot_cis / struct_site / struct_site_gen
Item: _atom_sites.fract_transf_matrix[2][1] / _atom_sites.fract_transf_matrix[3][2] ..._atom_sites.fract_transf_matrix[2][1] / _atom_sites.fract_transf_matrix[3][2] / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.pdbx_synonyms / _chem_comp.type / _entity.formula_weight / _entity.pdbx_number_of_molecules / _entity_poly.nstd_monomer / _entity_poly.pdbx_seq_one_letter_code / _entity_poly_seq.mon_id / _entity_src_gen.gene_src_common_name / _pdbx_poly_seq_scheme.auth_mon_id / _pdbx_poly_seq_scheme.mon_id / _pdbx_poly_seq_scheme.pdb_mon_id / _pdbx_struct_assembly_prop.value / _pdbx_struct_sheet_hbond.range_1_auth_comp_id / _pdbx_struct_sheet_hbond.range_1_auth_seq_id / _pdbx_struct_sheet_hbond.range_1_label_comp_id / _pdbx_struct_sheet_hbond.range_1_label_seq_id / _pdbx_struct_sheet_hbond.range_2_auth_comp_id / _pdbx_struct_sheet_hbond.range_2_auth_seq_id / _pdbx_struct_sheet_hbond.range_2_label_comp_id / _pdbx_struct_sheet_hbond.range_2_label_seq_id / _pdbx_struct_special_symmetry.auth_seq_id / _refine.B_iso_max / _refine.B_iso_mean / _refine.B_iso_min / _refine.aniso_B[1][1] / _refine.aniso_B[1][2] / _refine.aniso_B[1][3] / _refine.aniso_B[2][2] / _refine.aniso_B[2][3] / _refine.aniso_B[3][3] / _refine.correlation_coeff_Fo_to_Fc / _refine.correlation_coeff_Fo_to_Fc_free / _refine.details / _refine.ls_R_factor_R_free / _refine.ls_R_factor_R_work / _refine.ls_R_factor_obs / _refine.ls_d_res_low / _refine.ls_number_reflns_R_free / _refine.ls_number_reflns_obs / _refine.ls_percent_reflns_R_free / _refine.ls_percent_reflns_obs / _refine.overall_SU_B / _refine.overall_SU_ML / _refine.pdbx_overall_ESU_R / _refine.pdbx_overall_ESU_R_Free / _refine.pdbx_overall_phase_error / _refine.pdbx_solvent_ion_probe_radii / _refine.pdbx_solvent_shrinkage_radii / _refine.pdbx_solvent_vdw_probe_radii / _refine.pdbx_stereochemistry_target_values / _refine.solvent_model_details / _refine_hist.cycle_id / _refine_hist.d_res_low / _refine_hist.number_atoms_solvent / _refine_hist.number_atoms_total / _refine_hist.pdbx_B_iso_mean_ligand / _refine_hist.pdbx_B_iso_mean_solvent / _refine_hist.pdbx_number_atoms_protein / _refine_hist.pdbx_number_residues_total / _software.classification / _software.contact_author / _software.contact_author_email / _software.language / _software.location / _software.name / _software.type / _software.version / _struct_conf.beg_auth_comp_id / _struct_conf.beg_auth_seq_id / _struct_conf.beg_label_comp_id / _struct_conf.beg_label_seq_id / _struct_conf.end_auth_comp_id / _struct_conf.end_auth_seq_id / _struct_conf.end_label_comp_id / _struct_conf.end_label_seq_id / _struct_conf.pdbx_PDB_helix_length / _struct_mon_prot_cis.pdbx_omega_angle
Description: Model completeness
Details: active site C164 modification(S-sulfinylation ) Also modification in C71 (S-sulfenylation)
Provider: author / Type: Coordinate replacement
Revision 2.1May 8, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.title / _citation.year / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Type III polyketide synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)43,7012
Polymers42,9331
Non-polymers7681
Water5,224290
1
A: Type III polyketide synthase
hetero molecules

A: Type III polyketide synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)87,4024
Polymers85,8672
Non-polymers1,5352
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation17_555x-y+1/3,-y+2/3,-z+2/31
Buried area7200 Å2
ΔGint-9 kcal/mol
Surface area25790 Å2
MethodPISA
Unit cell
Length a, b, c (Å)150.860, 150.860, 105.610
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number155
Space group name H-MH32
Components on special symmetry positions
IDModelComponents
11A-519-

HOH

21A-603-

HOH

31A-702-

HOH

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Components

#1: Protein Type III polyketide synthase / Polyketide synthase


Mass: 42933.449 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Aegle marmelos (bael) / Production host: Escherichia coli (E. coli) / References: UniProt: M1HE54
#2: Chemical ChemComp-COA / COENZYME A / Coenzyme A


Mass: 767.534 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H36N7O16P3S / Feature type: SUBJECT OF INVESTIGATION
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 290 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY

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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: 2.7 Å3/Da / Density % sol: 54.39 %
Crystal growTemperature: 298 K / Method: microbatch / pH: 7.5
Details: 0.1M HEPES (pH-7.5), 1.4M sodium citrate tribasic dihydrate, 0.1M BaCl2 (additive)

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: ROTATING ANODE / Type: BRUKER AXS MICROSTAR / Wavelength: 1.5418 Å
DetectorType: MAR scanner 345 mm plate / Detector: IMAGE PLATE / Date: Dec 30, 2016
RadiationMonochromator: Osmic mirror / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.8→35.23 Å / Num. obs: 47076 / % possible obs: 97.7 % / Redundancy: 11.2 % / Rmerge(I) obs: 0.135 / Net I/σ(I): 0.14
Reflection shellResolution: 1.82→1.92 Å / Redundancy: 11.3 % / Rmerge(I) obs: 0.094 / Num. unique obs: 1605 / % possible all: 99.5

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Phasing

PhasingMethod: molecular replacement

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Processing

Software
NameVersionClassificationNB
PHENIX(1.20.1_4487: ???)refinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
PDB_EXTRACT3.25data extraction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3wd7

3wd7


Resolution: 1.8→27.38 Å / SU ML: 0.16 / Cross valid method: THROUGHOUT / σ(F): 0 / Phase error: 20.8 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.1993 2130 5.03 %RANDOM
Rwork0.1747 ---
obs0.176 42371 99.35 %-
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 1.8→27.38 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2882 0 48 290 3220
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.007
X-RAY DIFFRACTIONf_angle_d0.973
X-RAY DIFFRACTIONf_dihedral_angle_d6.652428
X-RAY DIFFRACTIONf_chiral_restr0.056464
X-RAY DIFFRACTIONf_plane_restr0.009510
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.8-1.840.19581330.15822688X-RAY DIFFRACTION100
1.84-1.890.1871480.16072662X-RAY DIFFRACTION100
1.89-1.940.20291430.17772675X-RAY DIFFRACTION100
1.94-20.21591220.19462724X-RAY DIFFRACTION100
2-2.060.28011290.19992673X-RAY DIFFRACTION100
2.06-2.130.24541600.20722663X-RAY DIFFRACTION100
2.13-2.220.20481540.20482670X-RAY DIFFRACTION100
2.22-2.320.2441370.20852649X-RAY DIFFRACTION99
2.32-2.440.25991550.21572632X-RAY DIFFRACTION99
2.44-2.60.25181370.21642665X-RAY DIFFRACTION98
2.6-2.80.2421130.20412679X-RAY DIFFRACTION98
2.8-3.080.21091550.19382650X-RAY DIFFRACTION98
3.08-3.520.17831560.16652684X-RAY DIFFRACTION99
3.52-4.430.15561340.13452735X-RAY DIFFRACTION100
4.43-27.380.17361540.1522792X-RAY DIFFRACTION100

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