β-Lactamase

Core structure of penicillins (top) and cephalosporins (bottom). β-lactam ring in red.

Escherichia coli bacteria on the right are sensitive to two beta-lactam antibiotics, and do not grow in the semi-circular regions surrounding the antibiotics. E. coli bacteria on the left are resistant to beta-lactam antibiotics, and grow next to one antibiotic (bottom) and are less inhibited by another antibiotic (top).

Beta-lactamases are enzymes (EC3.5.2.6) produced by bacteria(Also known as Penicillinase ) that provide resistance to β-lactam antibiotics such as penicillins, cephamycins, and carbapenems (ertapenem), although carbapenems are relatively resistant to beta-lactamase. Beta-lactamase provides antibiotic resistance by breaking the antibiotics' structure. These antibiotics all have a common element in their molecular structure: a four-atom ring known as a β-lactam. Through hydrolysis, the lactamase enzyme breaks the β-lactam ring open, deactivating the molecule's antibacterial properties.

单词	penicillinase
释义	penicillinase /ˌpeni'silineis//ˌpɛnɪˈsɪlɪˌnes/ 英汉-汉英词典 n. 青霉素酶(用以解除青霉素过敏) 词组 \| 习惯用语您要查找的是不是： penicillin n. 青霉素 princeliness n. 高贵 Pennsylvanian adj. Pennsylvania 的 n. Pennsylvania 人 penicillinase n. [生化] 青霉素酶（用以治疗青霉素过敏现象）网络短语: penicillinase electrode 青霉素酶电极 penicillinase measurement 青霉素酶测量 penicillinase inhibitors 青霉素酶抑制剂 penicillinase treatment 酶处理法 Immobilized penicillinase 固定化青霉素酶 Penicillinase standard 内酰胺酶 cell-bound penicillinase 细胞结合青霉素酶 penicillinase disc method 青霉素酶检测纸片法 penicillinase resistant penicillin 耐青霉素酶青霉素英语例句库 Penicillinase,hematein and nano gold colloid were immobilized,as a modified membrane,on a plane Pt electrode by glutaraldehyde-bovine serum albumin. 用戊二醛-牛血清白蛋白交联法将青霉素酶、纳米金胶和氧化苏木精同时修饰在铂电极上,制成电流型电化学生物传感器。声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。英语百科 β-Lactamase Beta-lactamases are enzymes (EC3.5.2.6) produced by bacteria(Also known as Penicillinase ) that provide resistance to β-lactam antibiotics such as penicillins, cephamycins, and carbapenems (ertapenem), although carbapenems are relatively resistant to beta-lactamase. Beta-lactamase provides antibiotic resistance by breaking the antibiotics' structure. These antibiotics all have a common element in their molecular structure: a four-atom ring known as a β-lactam. Through hydrolysis, the lactamase enzyme breaks the β-lactam ring open, deactivating the molecule's antibacterial properties. 近义、反义、联想词近义词 n. enzyme 联想词 penicillin青霉素;enzyme酶;protease蛋白酶;antibiotic抗生素, 抗菌素;enzymes酶类，酵素;bacterium细菌;bacterial细菌的;polypeptide多肽;enzymatic酶的;antibiotics抗生素;recombinant重组器官;
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penicillinase /ˌpeni'silineis//ˌpɛnɪˈsɪlɪˌnes/

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网络短语:

β-Lactamase

近义词

联想词