A gC1qR from the hepatopancreas of Chinese mitten crab Eriocheir sinensis was first identified.
EsgC1qR was significantly up-regulated by LPS, PGN, Staphyloccocus aureus, or Vibrio parahaemolyticus.
rEsgC1qR has binding activities to various bacteria and PAMPs (LPS and PGN).
Pull down assay showed that rEsgC1qR could interact with rEsCnx or rEsCrt.