Factor H (FH) is a member of the regulators of complement activation family and is a complement control protein. It is a large (155 kilodaltons), soluble glycoprotein that circulates in human plasma (at typical concentrations of 200–300 micrograms per milliliter). Its principal function is to regulate the alternative pathway of the complement system, ensuring that the complement system is directed towards pathogens or other dangerous material and does not damage host tissue.
Factor H (FH) belongs to the regulators of complement activation family and functions as a complement control protein. It is a large (155 kilodaltons), soluble glycoprotein found in human plasma at concentrations ranging from 200–300 micrograms per milliliter. Its main function is to regulate the alternative pathway of the complement system, ensuring it attacks pathogens or harmful substances without damaging host tissues.