目的改良人源杀菌肽LL-37的氨基酸序列，提高其杀菌力，并在原核细菌中表达。
Objective To reconstruct the proteinic sequence of human cathelicidin LL-37 to increase the bactericidal activity of LL-37 and to express the reconstructed LL-37 (rLL-37) in bacterium.
只有细菌这样的原核生物才没有溶酶体。
植物病原细菌是寄生在植物上的原核生物，个体微小，繁殖速度快。
Plant pathogenic bacteria are tiny prokaryote with the characteristic of rapid propagation.
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