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- PDB-9qt8: Polyester Hydrolase Leipzig 7 (PHL7) variant R2M2-P155G -

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Basic information

Entry
Database: PDB / ID: 9qt8
TitlePolyester Hydrolase Leipzig 7 (PHL7) variant R2M2-P155G
ComponentsPolyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant
KeywordsHYDROLASE / PET hydrolase / enzymatic plastic degradation / enzyme engineering / Polyester Hydrolase Leipzig 7
Function / homologyCutinase / PET hydrolase-like / : / hydrolase activity, acting on ester bonds / Alpha/Beta hydrolase fold / metal ion binding / CITRIC ACID / Polyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant
Function and homology information
Biological speciescompost metagenome (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 1.21 Å
AuthorsUseini, A. / Strater, N. / Kuenze, G. / Sonnendecker, C.
Funding supportEuropean Union, 2items
OrganizationGrant numberCountry
European Union (EU)State of Saxony, European Union's Just Transition Fund, grant nr 100704504European Union
European Union (EU)Horizon 2020 research and innovation program, grant nr 887913 ENZYCLEEuropean Union
CitationJournal: Nat Commun / Year: 2026
Title: Computational engineering of the polyester hydrolase PHL7 for efficient poly(ethylene terephthalate) degradation in biocatalytic recycling processes.
Authors: Blazquez-Sanchez, P. / Gunkel, J. / Useini, A. / Zlobin, A. / Zakary, J.D. / Scholer, A. / Graefe, N. / Engelberger, F. / Cantanhede, F. / Frank, R. / Zhao, Z. / Zarei, A. / Butenschon, E. / ...Authors: Blazquez-Sanchez, P. / Gunkel, J. / Useini, A. / Zlobin, A. / Zakary, J.D. / Scholer, A. / Graefe, N. / Engelberger, F. / Cantanhede, F. / Frank, R. / Zhao, Z. / Zarei, A. / Butenschon, E. / Matysik, J. / Zimmermann, W. / Strater, N. / Sonnendecker, C. / Kunze, G.
History
DepositionApr 8, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 27, 2026Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Polyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant
B: Polyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant
hetero molecules


Theoretical massNumber of molelcules
Total (without water)57,8483
Polymers57,6562
Non-polymers1921
Water15,547863
1
A: Polyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,0202
Polymers28,8281
Non-polymers1921
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Polyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant


Theoretical massNumber of molelcules
Total (without water)28,8281
Polymers28,8281
Non-polymers00
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)52.828, 74.254, 63.553
Angle α, β, γ (deg.)90.00, 97.70, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Polyester Hydrolase Leipzig 7 (PHL-7), catalysis-deficient S131A mutant


Mass: 28828.121 Da / Num. of mol.: 2
Mutation: E6Q, Q34D, D36S, E68S, T91S, Q104L, H109Y, R111T, N113D, V115T, N118D, A131S, T145P, E148K, P155G, N161D, T167V, V171I, S186A, D196S, D198P, S208D, D216N, L235T, F248P
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) compost metagenome (others) / Production host: Escherichia coli (E. coli) / References: UniProt: A0AA82WPD4
#2: Chemical ChemComp-CIT / CITRIC ACID


Mass: 192.124 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H8O7
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 863 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN
Has protein modificationY

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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: 2.14 Å3/Da / Density % sol: 42.59 %
Crystal growTemperature: 292 K / Method: vapor diffusion, hanging drop
Details: 0.1 M sodium citrate pH 4.0, 10% (w/v) PEG 6000, 3% (v/v) 1,6-hexanediol

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: PETRA III, EMBL c/o DESY / Beamline: P13 (MX1) / Wavelength: 0.97626 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Oct 24, 2023
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97626 Å / Relative weight: 1
ReflectionResolution: 1.21→62.98 Å / Num. obs: 87694 / % possible obs: 91.6 % / Redundancy: 7 % / CC1/2: 0.999 / Net I/σ(I): 11.3
Reflection shellResolution: 1.21→1.35 Å / Num. unique obs: 4385 / CC1/2: 0.58

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Processing

Software
NameVersionClassification
PHENIX(1.20.1)refinement
XDSdata reduction
STARANISOdata scaling
REFMAC8refinement
Cootmodel building
PHASERphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS / Resolution: 1.21→31.49 Å / SU ML: 0.11 / Cross valid method: FREE R-VALUE / σ(F): 1.35 / Phase error: 24.75 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.1778 2205 2.51 %
Rwork0.1429 --
obs0.1438 87678 59.47 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 1.21→31.49 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3944 0 13 871 4828
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.008
X-RAY DIFFRACTIONf_angle_d0.909
X-RAY DIFFRACTIONf_dihedral_angle_d11.3171594
X-RAY DIFFRACTIONf_chiral_restr0.076662
X-RAY DIFFRACTIONf_plane_restr0.011787
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.21-1.240.267770.2578190X-RAY DIFFRACTION
1.24-1.270.336380.2307547X-RAY DIFFRACTION
1.27-1.30.2501340.22741083X-RAY DIFFRACTION
1.3-1.330.2282380.21861704X-RAY DIFFRACTION
1.33-1.370.2663640.22012361X-RAY DIFFRACTION26
1.37-1.420.2709810.20213151X-RAY DIFFRACTION35
1.42-1.470.23571200.20823992X-RAY DIFFRACTION45
1.47-1.530.21051340.19845222X-RAY DIFFRACTION58
1.53-1.60.22391480.18126260X-RAY DIFFRACTION69
1.6-1.680.20121880.17537683X-RAY DIFFRACTION86
1.68-1.780.22532360.17238759X-RAY DIFFRACTION98
1.78-1.920.18392140.15398733X-RAY DIFFRACTION97
1.92-2.120.18722140.13178902X-RAY DIFFRACTION99
2.12-2.420.1752540.12218890X-RAY DIFFRACTION99
2.42-3.050.17032320.12968979X-RAY DIFFRACTION99
3.05-3.050.14432330.12739017X-RAY DIFFRACTION99

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