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Biomolecules 2017, 7(4), 72; doi:10.3390/biom7040072

Peptidylprolyl Isomerases as In Vivo Carriers for Drugs That Target Various Intracellular Entities

Service d’Ingénierie Moléculaire des Protéines (SIMOPRO), CEA, Université Paris-Saclay, F-91191 Gif/Yvette, France
Academic Editor: John A. Carver
Received: 24 August 2017 / Revised: 20 September 2017 / Accepted: 26 September 2017 / Published: 29 September 2017
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Abstract

Analyses of sequences and structures of the cyclosporine A (CsA)-binding proteins (cyclophilins) and the immunosuppressive macrolide FK506-binding proteins (FKBPs) have revealed that they exhibit peculiar spatial distributions of charges, their overall hydrophobicity indexes vary within a considerable level whereas their points isoelectric (pIs) are contained from 4 to 11. These two families of peptidylprolyl cis/trans isomerases (PPIases) have several distinct functional attributes such as: (1) high affinity binding to some pharmacologically-useful hydrophobic macrocyclic drugs; (2) diversified binding epitopes to proteins that may induce transient manifolds with altered flexibility and functional fitness; and (3) electrostatic interactions between positively charged segments of PPIases and negatively charged intracellular entities that support their spatial integration. These three attributes enhance binding of PPIase/pharmacophore complexes to diverse intracellular entities, some of which perturb signalization pathways causing immunosuppression and other system-altering phenomena in humans. View Full-Text
Keywords: PPIase; FKBP; cyclophilin; rapamycin; FK506 PPIase; FKBP; cyclophilin; rapamycin; FK506
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Galat, A. Peptidylprolyl Isomerases as In Vivo Carriers for Drugs That Target Various Intracellular Entities. Biomolecules 2017, 7, 72.

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