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巴西基因资源与生物技术研究所的科研人员近日成功在实验室内制作出人造蜘蛛丝,他们相信这是一项具有很高商业应用价值的科研成果。该试验所需的蛛丝蛋白是在实验室中借助大肠埃希菌合成的。科研人员将大肠埃希菌稀释于液体介质中以合成具有特定DNA序列的蛛丝蛋白,然后借助一个特殊注射器获取蛋白纤维。通过这种方法制成的人造蛛丝的直径约为40 nm,比天然蛛丝粗10~20倍。今后,科研人员还将测试这种人造蛛丝的延展性和韧性。这种人造蛛丝不仅具有弹性好、韧性大等优点,
Researchers at the Brazilian Institute of Genome and Biotechnology recently succeeded in producing artificial spider silk in the laboratory, believing it to be a scientific achievement of high commercial value. The spider silk proteins required for this test were synthesized in the laboratory by means of Escherichia coli. Researchers diluted Escherichia coli in a liquid medium to synthesize a spider silk protein with a specific DNA sequence and then grabbed the protein fibers with a special syringe. The artificial spider silk made by this method has a diameter of about 40 nm, which is 10 to 20 times larger than a natural spider silk. In the future, researchers will also test the ductility and toughness of this artificial spider silk. This artificial spider silk not only has good elasticity, toughness and other advantages,