头霉素是半合成头孢菌素的重要原料之一，属于抗生素的一种。
目的是在棒状链霉菌的发酵过程中，去除产物头霉素 C。
The objective is to delete cephamycin C in the fermentation of Streptomyces clavuligerus.
目的提高棒状链霉菌的克拉维酸生产能力，去除副产物头霉素C。
Objective To improve the production of clavulanic acid and to genetically delete cephamycin C in the fermentation of Streptomyces clavuligerus.
大肠埃希菌对碳青霉烯类、头霉素类、丁胺卡那和呋喃妥因的耐药率较低，而肺炎克雷伯菌对多种抗菌药物具有较好的敏感性。
E. coli showed low drug resistance ratio to carbapenem, cephamycins, amikacin and furadantin, and Klebsiella pneumoniae showed a good sensitivity to most of the antibiotics.
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