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- PDB-8h4c: Blasnase-T13A/M57P -

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Basic information

Entry
Database: PDB / ID: 8h4c
TitleBlasnase-T13A/M57P
ComponentsL-asparaginase
KeywordsHYDROLASE / Mutant
Function / homology
Function and homology information


asparagine metabolic process / asparaginase / asparaginase activity / metal ion binding
Similarity search - Function
L-asparaginase, type II / Asparaginase/glutaminase, active site 1 / Asparaginase / glutaminase active site signature 1. / L-asparaginase, C-terminal / Asparaginase/glutaminase, active site 2 / Asparaginase/glutaminase, C-terminal / Glutaminase/Asparaginase C-terminal domain / Asparaginase / glutaminase active site signature 2. / Asparaginase / Asparaginase/glutaminase-like ...L-asparaginase, type II / Asparaginase/glutaminase, active site 1 / Asparaginase / glutaminase active site signature 1. / L-asparaginase, C-terminal / Asparaginase/glutaminase, active site 2 / Asparaginase/glutaminase, C-terminal / Glutaminase/Asparaginase C-terminal domain / Asparaginase / glutaminase active site signature 2. / Asparaginase / Asparaginase/glutaminase-like / L-asparaginase, N-terminal / Asparaginase/glutaminase-like superfamily / L-asparaginase, N-terminal domain superfamily / Asparaginase, N-terminal / Asparaginase / glutaminase domain profile.
Similarity search - Domain/homology
FORMIC ACID / asparaginase
Similarity search - Component
Biological speciesBacillus paralicheniformis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.6 Å
AuthorsLu, F. / Wang, W. / Chi, H. / Ran, T.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31871742 China
CitationJournal: To Be Published
Title: Structure-based rational design of Bacillus licheniformis L-asparaginase with low/no D-asparaginase activity for a safer enzyme
Authors: Lu, F. / Wang, W. / Chi, H. / Ran, T.
History
DepositionOct 10, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Oct 18, 2023Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: L-asparaginase
B: L-asparaginase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)73,18116
Polymers72,6882
Non-polymers49214
Water10,611589
1
A: L-asparaginase
B: L-asparaginase
hetero molecules

A: L-asparaginase
B: L-asparaginase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)146,36132
Polymers145,3764
Non-polymers98528
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation7_555y,x,-z1
Buried area23010 Å2
ΔGint-159 kcal/mol
Surface area39100 Å2
MethodPISA
Unit cell
Length a, b, c (Å)91.716, 91.716, 233.017
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number92
Space group name H-MP41212
Space group name HallP4abw2nw
Symmetry operation#1: x,y,z
#2: -y+1/2,x+1/2,z+1/4
#3: y+1/2,-x+1/2,z+3/4
#4: x+1/2,-y+1/2,-z+3/4
#5: -x+1/2,y+1/2,-z+1/4
#6: -x,-y,z+1/2
#7: y,x,-z
#8: -y,-x,-z+1/2
Components on special symmetry positions
IDModelComponents
11A-526-

HOH

21B-541-

HOH

31B-808-

HOH

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Components

#1: Protein L-asparaginase


Mass: 36344.121 Da / Num. of mol.: 2 / Mutation: T13A, M57P
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus paralicheniformis (bacteria) / Gene: B4121_3474 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A6I7U6Y2
#2: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Mg
#3: Chemical
ChemComp-FMT / FORMIC ACID


Mass: 46.025 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: CH2O2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 589 / 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: 3.37 Å3/Da / Density % sol: 63.51 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / Details: sodium formate

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Data collection

DiffractionMean temperature: 173 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL18U1 / Wavelength: 0.9791 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Oct 29, 2021
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9791 Å / Relative weight: 1
ReflectionResolution: 1.6→19.83 Å / Num. obs: 123059 / % possible obs: 93.5 % / Redundancy: 25.6 % / CC1/2: 0.999 / Rpim(I) all: 0.021 / Net I/σ(I): 17
Reflection shellResolution: 1.6→1.63 Å / Num. unique obs: 6442 / CC1/2: 0.724 / Rpim(I) all: 0.423

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Processing

Software
NameVersionClassification
PHENIXv1.16refinement
XDSdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 7C8X

7c8x


Resolution: 1.6→19.83 Å / Cross valid method: FREE R-VALUE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.1929 --
Rwork0.1835 --
obs-122944 93.48 %
Displacement parametersBiso mean: 31.68 Å2
Refinement stepCycle: LAST / Resolution: 1.6→19.83 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5031 0 28 589 5648
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.00985163
X-RAY DIFFRACTIONf_angle_d1.06346987
X-RAY DIFFRACTIONf_chiral_restr0.0725778
X-RAY DIFFRACTIONf_plane_restr0.0068910
X-RAY DIFFRACTIONf_dihedral_angle_d18.09583060

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