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Structure of the Anti-C60 Fullerene Antibody Fab Fragment: Structural Determinants of Fullerene Binding.


ABSTRACT: The structure of the anti-C60 fullerene antibody Fab fragment (FabC60) was solved by X-ray crystallography. The computer-aided docking of C60 into the antigen-binding pocket of FabC60 showed that binding of C60 to FabC60 is governed by the enthalpy and entropy; namely, by ?-? stacking interactions with aromatic residues of the antigen-binding site and reduction of the solvent-accessible area of the hydrophobic surface of C60. A fragment of the mobile CDR H3 loop located on the surface of FabC60 interferes with C60 binding in the antigen-binding site, thereby resulting in low antibody affinity for C60. The structure of apo-FabC60 has been deposited with pdbid 6H3H.

SUBMITTER: Osipov EM 

PROVIDER: S-EPMC6475864 | biostudies-literature | 2019 Jan-Mar

REPOSITORIES: biostudies-literature

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Structure of the Anti-C60 Fullerene Antibody Fab Fragment: Structural Determinants of Fullerene Binding.

Osipov E M EM   Hendrickson O D OD   Tikhonova T V TV   Zherdev A V AV   Solopova O N ON   Sveshnikov P G PG   Dzantiev B B BB   Popov V O VO  

Acta naturae 20190101 1


The structure of the anti-C<sub>60</sub> fullerene antibody Fab fragment (FabC<sub>60</sub>) was solved by X-ray crystallography. The computer-aided docking of C<sub>60</sub> into the antigen-binding pocket of FabC<sub>60</sub> showed that binding of C<sub>60</sub> to FabC<sub>60</sub> is governed by the enthalpy and entropy; namely, by π-π stacking interactions with aromatic residues of the antigen-binding site and reduction of the solvent-accessible area of the hydrophobic surface of C<sub>60<  ...[more]

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