15.下列何者為vanA或vanB抗萬古黴素腸球菌(VRE)之主要抗藥機轉?
(A)胜糖(肽聚糖)前驅物質五肽末端D-Ala-D-Ala變為D-Ala-D-Lac
(B)胜糖(肽聚糖)前驅物質五肽末端D-Ala-D-Ala變為D-Ala-D-Ser
(C)Efflux pump過度活化,加速排出藥物
(D)質體產生acetyltransferase,使vancomycin乙醯化
答案:登入後查看
統計: A(1145), B(291), C(82), D(65), E(0) #776644
統計: A(1145), B(291), C(82), D(65), E(0) #776644
詳解 (共 3 筆)
#1055898
Vancomycin resistant enterococcus的peptidoglycan上NAM側鏈末端胺基酸由D-ala-D-ala轉變成D-ala-D-lactate, 降低vancomycin結合至peptidoglycan的親和力
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