昆虫抗菌肽的研究进展

The progress of insects antibacterial piptides

昆虫抗菌肽的研究进展郭玉梅，戴祝英综述陈宜峰审校（南京师范大学生物系，南京２１００２４）昆虫的种类繁多，约几百万种，为适应各种不同的生态环境，建立了自己独特的免疫系统，抗菌肽就是免疫体系中的关键成分。过去，抗菌肽的主要研究方面在昆虫免疫和昆虫生化，目...

Insects have highly effective cell-free immune systems which are induced by a bacterial in fection. As a response, the insects produce a set of antibacterial peptides which are isolated from haemolymph of the insects. The antibacterial peptides contain 30-40 amino acid residues with strong ly basic NH2-terminals and hydrophobic COOH-terminals. Some antibacterial peptides molecule struc tures are investigated by two-dimensional′H-NMR. Many scholars make use of a planar lipid bilayer system to examine the action of synthetic basic peptides. The channel was formed and an increase in ion permeability of the membrane occured. So we may say the amtibacterial peptides are key compo nents needed in insect immunity.