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High-throughput Measurement of Plasma Membrane Resealing Efficiency in Mammalian Cells
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Cholesterol-dependent cytolysins.

Robert J C Gilbert1

  • 1Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, UK. gilbert@strubi.ox.ac.uk

Advances in Experimental Medicine and Biology
|August 7, 2010
PubMed
Summary
This summary is machine-generated.

Cholesterol-dependent cytolysins (CDCs) are pore-forming proteins homologous to human perforin and complement. Their membrane attack mechanism involves refolding and oligomerization, crucial for diverse biological phenomena.

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Area of Science:

  • Microbiology
  • Biochemistry
  • Immunology

Background:

  • Cholesterol-dependent cytolysins (CDCs) are pore-forming proteins found in Gram-positive bacteria.
  • CDCs share homology with the membrane attack complex/perforin (MACPF) family, including human perforin and complement components.
  • Their mechanism involves specific interactions with target membranes and a characteristic refolding process.

Purpose of the Study:

  • To provide an overview of cholesterol-dependent cytolysins (CDCs) and their superfamily.
  • To discuss the historical perspective and development of understanding CDC mechanisms.
  • To highlight the conserved structural features and functional implications of the MACPF/CDC superfamily.

Main Methods:

  • Literature review and synthesis of existing research on CDCs and MACPF proteins.
  • Analysis of structural homologies and conserved features within the MACPF/CDC superfamily.
  • Discussion of the functional roles and mechanisms of pore formation by these proteins.

Main Results:

  • CDCs, like listeriolysin and perfringolysin, play roles in bacterial pathogenesis and have biotechnological applications.
  • The MACPF/CDC superfamily exhibits a conserved structural fold, essential for membrane interaction and pore formation.
  • Pore formation is dependent on specific membrane characteristics and protein oligomerization, involving dramatic refolding.

Conclusions:

  • CDCs and MACPF proteins represent a conserved superfamily with diverse functions in membrane attack and biological processes.
  • Understanding the mechanism of pore formation is crucial for elucidating their roles in infection, immunity, and potential therapeutic applications.
  • Further research is needed to fully resolve the mechanisms of action for all members of this superfamily, including perforin and complement.