Structural and functional characterization of human complement factor P

Dennis Pedersen

Structural and functional characterization of human complement factor P

Bidragets oversatte titel: Strukturel og funktionel karakterisering af human komplement faktor P

Publikation: Bog/antologi/afhandling/rapport › Ph.d.-afhandling

Abstract

The complement system is of great importance for the innate immune response, which can lead to opsonization and removal of invading pathogens, as well as immune complexes and damaged self-cells. Factor P (FP), also known as properdin, acts as a positive regulator of the alternative pathway of complement by stabilizing the C3 convertase complex (C3bBb). FP has also been suggested to serve as a pattern recognition molecule for the initiation of the alternative pathway. However, the molecular mechanisms of FP remain unclear due to its oligomeric nature and hence the atomic structure of FP has not yet been resolved.
This PhD-thesis provide structural understanding of the FP mediated stabilization of the AP C3 convertase. Furthermore, functional studies involving oligomeric and monomeric FP variants have helped us to understand the importance of FP oligomerization for the primary functions of FP convertase stabilization and pattern recognition.

Bidragets oversatte titel	Strukturel og funktionel karakterisering af human komplement faktor P
Originalsprog	Engelsk

Forlag	Aarhus University, Science and Technology
Antal sider	207
Status	Udgivet - 5 dec. 2016

Emneord

Immunology, complement, properdin

Citationsformater

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N2 - The complement system is of great importance for the innate immune response, which can lead to opsonization and removal of invading pathogens, as well as immune complexes and damaged self-cells. Factor P (FP), also known as properdin, acts as a positive regulator of the alternative pathway of complement by stabilizing the C3 convertase complex (C3bBb). FP has also been suggested to serve as a pattern recognition molecule for the initiation of the alternative pathway. However, the molecular mechanisms of FP remain unclear due to its oligomeric nature and hence the atomic structure of FP has not yet been resolved. This PhD-thesis provide structural understanding of the FP mediated stabilization of the AP C3 convertase. Furthermore, functional studies involving oligomeric and monomeric FP variants have helped us to understand the importance of FP oligomerization for the primary functions of FP convertase stabilization and pattern recognition.

AB - The complement system is of great importance for the innate immune response, which can lead to opsonization and removal of invading pathogens, as well as immune complexes and damaged self-cells. Factor P (FP), also known as properdin, acts as a positive regulator of the alternative pathway of complement by stabilizing the C3 convertase complex (C3bBb). FP has also been suggested to serve as a pattern recognition molecule for the initiation of the alternative pathway. However, the molecular mechanisms of FP remain unclear due to its oligomeric nature and hence the atomic structure of FP has not yet been resolved. This PhD-thesis provide structural understanding of the FP mediated stabilization of the AP C3 convertase. Furthermore, functional studies involving oligomeric and monomeric FP variants have helped us to understand the importance of FP oligomerization for the primary functions of FP convertase stabilization and pattern recognition.

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