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- PDB-4na2: Crystal Structure of the second ketosynthase from the bacillaene ... -

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Basic information

Entry
Database: PDB / ID: 4na2
TitleCrystal Structure of the second ketosynthase from the bacillaene polyketide synthase bound to its natural intermediate
ComponentsPolyketide synthase PksJ
KeywordsTRANSFERASE / condensing enzyme fold
Function / homology
Function and homology information


DIM/DIP cell wall layer assembly / organonitrogen compound biosynthetic process / fatty acid synthase activity / phosphopantetheine binding / ligase activity / 3-oxoacyl-[acyl-carrier-protein] synthase activity / antibiotic biosynthetic process / fatty acid biosynthetic process / cytoplasm
Similarity search - Function
Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1 - #100 / Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1 / : / Polyketide and metazoan fatty acid synthase dehydratase (PKS/mFAS DH) domain profile. / : / Polyketide synthase dehydratase domain / PKS_PP_betabranch / Polyketide synthase dehydratase N-terminal domain / Condensation domain / Condensation domain ...Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1 - #100 / Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1 / : / Polyketide and metazoan fatty acid synthase dehydratase (PKS/mFAS DH) domain profile. / : / Polyketide synthase dehydratase domain / PKS_PP_betabranch / Polyketide synthase dehydratase N-terminal domain / Condensation domain / Condensation domain / Amino acid adenylation domain / PKS_DH / Polyketide synthase, dehydratase domain / Polyketide synthase, dehydratase domain superfamily / Polyketide synthase, ketoreductase domain / KR domain / Polyketide synthase, C-terminal extension / Ketoacyl-synthetase C-terminal extension / ANL, N-terminal domain / PKS_KR / AMP-binding enzyme, C-terminal domain / AMP-binding enzyme C-terminal domain / AMP-binding, conserved site / Chloramphenicol acetyltransferase-like domain superfamily / Putative AMP-binding domain signature. / Thiolase/Chalcone synthase / Peroxisomal Thiolase; Chain A, domain 1 / Ketosynthase family 3 (KS3) domain profile. / Polyketide synthase, phosphopantetheine-binding domain / Phosphopantetheine attachment site / AMP-dependent synthetase/ligase / AMP-binding enzyme, C-terminal domain superfamily / AMP-binding enzyme / Beta-ketoacyl synthase / Beta-ketoacyl synthase, active site / Ketosynthase family 3 (KS3) active site signature. / Polyketide synthase, beta-ketoacyl synthase domain / Beta-ketoacyl synthase, N-terminal / Beta-ketoacyl synthase, C-terminal / Beta-ketoacyl synthase, N-terminal domain / Beta-ketoacyl synthase, C-terminal domain / Phosphopantetheine attachment site / Thiolase-like / Phosphopantetheine attachment site. / Phosphopantetheine attachment site / ACP-like superfamily / Carrier protein (CP) domain profile. / Phosphopantetheine binding ACP domain / NAD(P)-binding domain superfamily / Orthogonal Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Polyketide synthase PksJ
Similarity search - Component
Biological speciesBacillus subtilis subsp. subtilis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.3 Å
AuthorsGay, D.C. / Gay, G.R. / Keatinge-Clay, A.T.
CitationJournal: Structure / Year: 2014
Title: A close look at a ketosynthase from a trans-acyltransferase modular polyketide synthase.
Authors: Gay, D.C. / Gay, G. / Axelrod, A.J. / Jenner, M. / Kohlhaas, C. / Kampa, A. / Oldham, N.J. / Piel, J. / Keatinge-Clay, A.T.
History
DepositionOct 21, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 19, 2014Provider: repository / Type: Initial release
Revision 1.1Mar 26, 2014Group: Database references
Revision 1.2Sep 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_conn / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag / _struct_ref_seq_dif.details

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Polyketide synthase PksJ
B: Polyketide synthase PksJ


Theoretical massNumber of molelcules
Total (without water)141,1942
Polymers141,1942
Non-polymers00
Water4,378243
1
A: Polyketide synthase PksJ

A: Polyketide synthase PksJ


Theoretical massNumber of molelcules
Total (without water)141,1942
Polymers141,1942
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_655-x+1,y,-z1
Buried area5310 Å2
ΔGint-27 kcal/mol
Surface area43970 Å2
MethodPISA
2
B: Polyketide synthase PksJ

B: Polyketide synthase PksJ


Theoretical massNumber of molelcules
Total (without water)141,1942
Polymers141,1942
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_556-x,y,-z+11
Buried area5370 Å2
ΔGint-26 kcal/mol
Surface area42830 Å2
MethodPISA
Unit cell
Length a, b, c (Å)165.120, 71.340, 116.470
Angle α, β, γ (deg.)90.00, 95.10, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11A-801-

HOH

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Components

#1: Protein Polyketide synthase PksJ / PKS


Mass: 70597.188 Da / Num. of mol.: 2 / Fragment: Ketosynthase, UNP residues 3336-3953 / Mutation: C176S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus subtilis subsp. subtilis (bacteria)
Strain: 168 / Gene: pksJ, pksK, BSU17180 / Plasmid: pGAY28b / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)
References: UniProt: P40806, Transferases; Acyltransferases; Transferring groups other than aminoacyl groups
#2: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 243 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsAUTHOR STATES THAT THE GLU TO GLY MUTATION WAS INADVERTENT, AND OCCURRED DURING PRIMER DESIGN.

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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: 2.43 Å3/Da / Density % sol: 49.29 %
Crystal growTemperature: 295 K / Method: vapor diffusion, sitting drop / pH: 7.5
Details: 15% (w,v) PEG 3350, 0.18 M tri-ammonium citrate, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 23-ID-D / Wavelength: 1.0331 Å
DetectorType: MARMOSAIC 300 mm CCD / Detector: CCD / Date: Jul 26, 2013
RadiationMonochromator: Double crystal cryo-cooled / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.0331 Å / Relative weight: 1
ReflectionResolution: 2.3→43.5 Å / Num. obs: 60206 / % possible obs: 100 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0
Reflection shellResolution: 2.35→2.393 Å / Rmerge(I) obs: 0.815 / Mean I/σ(I) obs: 2 / % possible all: 87.4

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Processing

Software
NameVersionClassification
MAR345dtbdata collection
PHASESphasing
REFMAC5.6.0117refinement
MOSFLMdata reduction
SCALAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 4NA1

4na1


Resolution: 2.3→43.5 Å / Cor.coef. Fo:Fc: 0.942 / Cor.coef. Fo:Fc free: 0.909 / Cross valid method: THROUGHOUT / ESU R: 0.394 / ESU R Free: 0.263 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
RfactorNum. reflection% reflectionSelection details
Rfree0.2603 2848 5.1 %RANDOM
Rwork0.21043 ---
obs0.21302 53202 93.08 %-
all-52829 --
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 39.434 Å2
Baniso -1Baniso -2Baniso -3
1-0.09 Å20 Å20 Å2
2--0.04 Å2-0 Å2
3----0.12 Å2
Refinement stepCycle: LAST / Resolution: 2.3→43.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms9189 0 0 243 9432
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0080.0199386
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg0.7241.95512696
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg4.27751166
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.63224.194434
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.902151589
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.1871560
X-RAY DIFFRACTIONr_chiral_restr0.0510.21378
X-RAY DIFFRACTIONr_gen_planes_refined0.0030.0217148
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
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: 2.3→2.36 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.394 177 -
Rwork0.376 3683 -
obs--87.19 %

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