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- PDB-7t5x: P. aeruginosa LpxA in complex with ligand L6 -

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Basic information

Entry
Database: PDB / ID: 7t5x
TitleP. aeruginosa LpxA in complex with ligand L6
ComponentsAcyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
KeywordsTRANSFERASE / Lpxa / lipid A / LPS / lipopolysaccharide / UDP-N-acetylglucosamine O-acyltransferase
Function / homology
Function and homology information


acyl-[acyl-carrier-protein]-UDP-N-acetylglucosamine O-acyltransferase / acyl-[acyl-carrier-protein]-UDP-N-acetylglucosamine O-acyltransferase activity / lipid A biosynthetic process / cytoplasm
Similarity search - Function
UDP N-acetylglucosamine O-acyltransferase, C-terminal / UDP-N-acetylglucosamine O-acyltransferase, C-terminal domain superfamily / Udp N-acetylglucosamine O-acyltransferase; Domain 2 / Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase / Hexapeptide transferase, conserved site / Hexapeptide-repeat containing-transferases signature. / Hexapeptide repeat / Bacterial transferase hexapeptide (six repeats) / Trimeric LpxA-like superfamily
Similarity search - Domain/homology
Chem-F4L / Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
Similarity search - Component
Biological speciesPseudomonas aeruginosa PA7 (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsSacco, M. / Chen, Y.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Acs Infect Dis. / Year: 2022
Title: Structure-Based Ligand Design Targeting Pseudomonas aeruginosa LpxA in Lipid A Biosynthesis.
Authors: Sacco, M.D. / Defrees, K. / Zhang, X. / Lawless, W. / Nwanochie, E. / Balsizer, A. / Darch, S.E. / Renslo, A.R. / Chen, Y.
History
DepositionDec 13, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 6, 2022Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2022Group: Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jul 20, 2022Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.3Oct 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

Downloads & links

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Assembly

Deposited unit
A: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
B: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
C: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
D: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
E: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
F: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)170,52112
Polymers168,2926
Non-polymers2,2286
Water5,819323
1
A: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
B: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
C: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)85,2606
Polymers84,1463
Non-polymers1,1143
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6180 Å2
ΔGint-39 kcal/mol
Surface area29140 Å2
MethodPISA
2
D: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
E: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
F: Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)85,2606
Polymers84,1463
Non-polymers1,1143
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6200 Å2
ΔGint-39 kcal/mol
Surface area28980 Å2
MethodPISA
Unit cell
Length a, b, c (Å)79.740, 82.280, 220.560
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein
Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase / UDP-N-acetylglucosamine acyltransferase


Mass: 28048.730 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Pseudomonas aeruginosa PA7 (bacteria) / Strain: PA7 / Gene: lpxA, PSPA7_1495
Production host: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
References: UniProt: A6V1E4, acyl-[acyl-carrier-protein]-UDP-N-acetylglucosamine O-acyltransferase
#2: Chemical
ChemComp-F4L / Nalpha-(tert-butoxycarbonyl)-N-1H-tetrazol-5-yl-D-tryptophanamide


Mass: 371.394 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C17H21N7O3 / Feature type: SUBJECT OF INVESTIGATION
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 323 / 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: 2.15 Å3/Da / Density % sol: 42.78 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / Details: 12% PEG 1,000, 0.2 M CaOAc, 0.1 imidazole pH7

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 22-BM / Wavelength: 1 Å
DetectorType: RAYONIX MX300-HS / Detector: CCD / Date: Oct 13, 2019
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.2→45.81 Å / Num. obs: 70104 / % possible obs: 94.2 % / Redundancy: 5.9 % / CC1/2: 0.997 / Rmerge(I) obs: 0.092 / Rpim(I) all: 0.04 / Rrim(I) all: 0.101 / Net I/σ(I): 12.6 / Num. measured all: 415442 / Scaling rejects: 127
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. measured allNum. unique obsCC1/2Rpim(I) allRrim(I) allNet I/σ(I) obs% possible all
2.2-2.2560.5822551442530.8150.2540.6373.194.3
10.78-45.816.30.03146487410.9930.0130.03434.998.8

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Processing

Software
NameVersionClassification
Aimless0.7.7data scaling
REFMAC5.8.0267refinement
PDB_EXTRACT3.27data extraction
MOSFLMdata reduction
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 6ueg

6ueg


Resolution: 2.2→45.22 Å / Cor.coef. Fo:Fc: 0.951 / Cor.coef. Fo:Fc free: 0.929 / SU B: 6.61 / SU ML: 0.164 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.374 / ESU R Free: 0.23 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.2346 3364 4.8 %RANDOM
Rwork0.1956 ---
obs0.1975 66660 93.95 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 144.19 Å2 / Biso mean: 36.603 Å2 / Biso min: 13.89 Å2
Baniso -1Baniso -2Baniso -3
1-0.53 Å2-0 Å20 Å2
2---0.25 Å2-0 Å2
3----0.27 Å2
Refinement stepCycle: final / Resolution: 2.2→45.22 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms11790 0 162 325 12277
Biso mean--44.7 37.14 -
Num. residues----1541
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0070.01312228
X-RAY DIFFRACTIONr_bond_other_d0.0010.01511432
X-RAY DIFFRACTIONr_angle_refined_deg1.4961.65616612
X-RAY DIFFRACTIONr_angle_other_deg1.1841.5926171
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.55951537
X-RAY DIFFRACTIONr_dihedral_angle_2_deg30.53820.635661
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.141151902
X-RAY DIFFRACTIONr_dihedral_angle_4_deg17.38515108
X-RAY DIFFRACTIONr_chiral_restr0.0550.21608
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.0214077
X-RAY DIFFRACTIONr_gen_planes_other0.0010.022889
LS refinement shellResolution: 2.2→2.257 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.303 210 -
Rwork0.261 4893 -
all-5103 -
obs--94.01 %

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