C5AR1
состоит из 350
аминокислот
, молекулярная масса 39 336 Да. Описана единственная изоформа белка.
Функции
C5AR1 —
рецептор
анафилотоксического
пептида хемотаксиса и воспаления C5a
.
Лиганд
взаимодействует по крайней мере с двумя участками рецептора: участок высокоаффинного связывания расположен на N-конце рецептора, а второй более низкоаффинный участок находится в трансмембранном фрагменте и активирует последующие сигнальные пути
. Активация рецептора стимулирует
хемотаксис
, высвобождение ферментов внутриклеточных гранул, внутриклеточный выход
Ca
2+
и образование
супероксида
.
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