#256 - Apr 2021 SARS-CoV-2 Spike and Antibodies similarity (1)
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Assembly
Deposited unit
A: Human Variable Heavy Chain of Herceptin B: Human Variable Light Chain of Herceptin C: Human Variable Heavy Chain of Herceptin D: Human Variable Light Chain of Herceptin
Mass: 14565.989 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 (DE3)
#2: Antibody
HumanVariableLightChainofHerceptin
Mass: 11734.021 Da / Num. of mol.: 2 / Mutation: S52D Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 (DE3)
Mass: 18.015 Da / Num. of mol.: 12 / Source method: isolated from a natural source / Formula: H2O
Has protein modification
Y
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Experimental details
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Experiment
Experiment
Method: X-RAY DIFFRACTION
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Sample preparation
Crystal
Density Matthews: 2.74 Å3/Da / Density % sol: 55 % / Description: small hexagonal rods
Crystal grow
Temperature: 293 K / Method: vapor diffusion, hanging drop / pH: 4.5 Details: 3.5 M sodium formate, 100 mM sodium acetate (pH 4.5)
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Data collection
Diffraction
Mean temperature: 100 K
Diffraction source
Source: SYNCHROTRON / Site: Australian Synchrotron / Beamline: MX2 / Wavelength: 0.954 Å
Detector
Type: ADSC QUANTUM 315r / Detector: CCD
Radiation
Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
Wavelength: 0.954 Å / Relative weight: 1
Reflection
Resolution: 2.25→35.65 Å / Num. obs: 26621 / % possible obs: 99.9 % / Redundancy: 5 % / Biso Wilson estimate: 40.6 Å2 / Rmerge(I) obs: 0.104 / Net I/σ(I): 8.5
Reflection shell
Resolution: 2.25→2.37 Å / Redundancy: 4.9 % / Rmerge(I) obs: 0.86 / Mean I/σ(I) obs: 1.8 / % possible all: 100
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Processing
Software
Name
Version
Classification
Blu-Ice
datacollection
MOSFLM
datareduction
SCALA
datascaling
PHASER
phasing
REFMAC
5.8.0073
refinement
Refinement
Resolution: 2.25→35.65 Å / Cor.coef. Fo:Fc: 0.94 / Cor.coef. Fo:Fc free: 0.921 / SU B: 20.039 / SU ML: 0.216 / Cross valid method: THROUGHOUT / ESU R: 0.258 / ESU R Free: 0.218 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.26906
1329
5 %
RANDOM
Rwork
0.22618
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obs
0.2283
25257
99.82 %
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Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK