messages.content: 请把下面的中文句子翻译成英文
messages.role: system
messages.content: 抑菌试验结果显示分别含重组蛋白CgDH⁺和重组蛋白CgDH⁻的培养液上清对金黄色葡萄球菌Staphylococcus aureus 和铜绿假单孢菌Pseudomonas aeruginosa 都具有抑菌活性，表明重组蛋白中6×His 标签的存在与否并不影响其生物学活性。
messages.role: user
messages.content: Antimicrobial assay showed that the culture medium supernatant containing recombinant CgDH⁺ and recombinant CgDH-, respectively, had activities against Staphylococcus aureus and Pseudomonas aeruginosa, indicating that the existence of 6×His tag in the recombinant proteins do not affect their biological activities.
messages.role: assistant