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German scientists use transgenic bacteria to make spider silk
German scientists announced that they have used GM bacteria to successfully produce high-quality spider silk. In the future, they can even use this spider silk to weave delicate fabrics or make ropes that are very strong and extremely light. According to a report from the German news agency, Thomas Scheibel, a biochemist at the Technical University of Munich, said that they used genetically modified E. coli to stimulate insect cells during the research process and produce specific proteins needed for the secretion of spider silk, resulting in excellent quality. Gossamer. Shaybel said that because of its low resistance to breakage, this spider silk obtained by breeding genetically modified bacteria is an ideal material for making banknotes. Spider silk can also be used for car body paneling, even if the impact of dents can still return to their original state. However, this method cannot yet achieve large-scale production. "We are in contact with various industries to detect the quality of this silk and to further develop industrial-scale production technology." If high-quality elastic materials such as spider silk can realize large-scale artificial production, they can replace plastic materials for extreme fine sewing of eye or neurosurgery, and can also be used to manufacture wound dressings such as tapes or artificial ligaments and tendons, etc. The application prospects are extremely broad. However, unlike silkworms, spiders cannot be domesticated because they can swallow each other. Therefore, it is impossible to establish farms for rearing spiders on a large scale, which has become an obstacle to the development of this field. One of the most peculiar substances in nature - Gossamer has a very strong tension, and its toughness is several times that of steel of the same diameter. For more than 30 years, scientists have been trying to use other organisms to make spider silk.