Characterisation of the SCR-domain family of Complement Regulators ; Structure, function and Streptococcal pathogenesis.

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A group of proteins in blood called 'Complement' are activated in the presence of foreign cells or micro-organisms and this generally results in their destruction. It is important that this destructive activity is directed against foreign and not self tissue. This is achieved by a further family of proteins, including a protein called factor H, which switch off or regulate complement activity. How these proteins work is the principle focus of this project. There are many diseases in which damage results from inadvertent complement activation and the regulatory proteins have therapeutic potential in this area. In addition, many bacteria and other micro-organisms, which should be destroyed by complement, escape by binding regulatory proteins. Understanding how this is achieved may assist in identifying targets for vaccine development.