Figure 4

The mRNA and activity of caspase after the gene silencing of EsIAP1. (a) The expression level of EsIAP1 mRNA in hemocytes after gene silencing of EsIAP1. Comparison of the level of EsIAP1 was normalized to dsGFP group. (b) The expression level of the EsCaspase-3/7-1 mRNA in hemocytes of EsIAP1-interfered crabs. Comparison of the level of EsIAP1 was normalized to dsGFP group. (c) The activities of caspases were determined by measuring hydrolyzing activity against Ac-YVAD-pNA (substrate of caspase-1), Ac-DEVD-pNA (substrate of caspase-3) or Ac-VEID-pNA (substrate of caspase-6).