... Molecular cloning, expression and characterization of protein disulfide isomerase from Conus marmoreus Zhi-Qiang Wang1, Yu-Hong Han1,2, Xiao-Xia Shao1, Cheng-Wu Chi1,2 and Zhan-Yun ... homologywith protein disulfide isomerases from other species, and 70% homologywith human protein disulfide isomerase. Enzymatic analyses of recombi-nant C. marmoreus protein disulfide isomerase showed ... with human protein disulfide isomerase. Usingconotoxins tx3a and sTx3.1 as substrate, we analyzed the oxidase and isomerase activities of the C. marmoreus protein disulfide isomerase and found...