Journal: Chem.Res.Toxicol. / Year: 2011 Title: Reaction of Cresyl Saligenin Phosphate, the Organophosphorus Agent Implicated in Aerotoxic Syndrome, with Human Cholinesterases: Mechanistic Studies Employing Kinetics, Mass Spectrometry, and ...Title: Reaction of Cresyl Saligenin Phosphate, the Organophosphorus Agent Implicated in Aerotoxic Syndrome, with Human Cholinesterases: Mechanistic Studies Employing Kinetics, Mass Spectrometry, and X-Ray Structure Analysis. Authors: Carletti, E. / Schopfer, L.M. / Colletier, J.P. / Froment, M.T. / Nachon, F. / Weik, M. / Lockridge, O. / Masson, P.
Mass: 18.015 Da / Num. of mol.: 229 / Source method: isolated from a natural source / Formula: H2O
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Details
Compound details
ENGINEERED RESIDUE IN CHAIN A, ASN 45 TO GLN ENGINEERED RESIDUE IN CHAIN A, ASN 483 TO GLN ...ENGINEERED RESIDUE IN CHAIN A, ASN 45 TO GLN ENGINEERED RESIDUE IN CHAIN A, ASN 483 TO GLN ENGINEERED RESIDUE IN CHAIN A, ASN 509 TO GLN
Has protein modification
Y
Nonpolymer details
CATALYTIC SERINE 198 IS PHOSPHORYLATED (SEP).
Sequence details
RESIDUE NUMBERING IS FOR THE MATURE PROTEIN SEQUENCE.
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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: 3.15 Å3/Da / Density % sol: 61 % / Description: NONE
Crystal grow
pH: 6.5 / Details: 0.1 M MES PH 6.5, 2.1 M AMMONIUM SULFATE.
Resolution: 2.5→41.38 Å / Cor.coef. Fo:Fc: 0.957 / Cor.coef. Fo:Fc free: 0.929 / SU B: 18.173 / SU ML: 0.211 / Cross valid method: THROUGHOUT / ESU R: 0.405 / ESU R Free: 0.275 / Stereochemistry target values: MAXIMUM LIKELIHOOD Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. THE ADPS OF THE ATOMS IN THE PHOPHONO GROUP OF SER 198 WERE REFINED SEPARATELY (AS ISOTROPIC) AND NOT INCLUDED IN THE TLS REFINEMENT OF RESIDUES 71-233.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.24706
760
3 %
RANDOM
Rwork
0.18281
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obs
0.1848
24577
94.79 %
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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