Yuan R, Horecker B L
J Bacteriol. 1968 Jun;95(6):2242-8. doi: 10.1128/jb.95.6.2242-2248.1968.
The biosynthesis of the O antigen of Citrobacter 139 (Escherichia coli 3 Zurich 4,5,12:z(20)) was shown to proceed through a series of lipid-linked intermediates, similar to those involved in O-antigen synthesis in Salmonella. Galactose was the first sugar incorporated, followed by rhamnose and mannose. Abequose was incorporated from cytidine diphosphate (CDP)-abequose only when all three of the other nucleotide sugars (uridine diphosphate galactose, guanosine diphosphate mannose, and thymidine diphosphate rhamnose) were present. Rhamnosyl-galactosyl 1-phosphate and mannosyl-rhamnosyl-galactosyl 1-phosphate were identified as the products of mild alkaline hydrolysis of the lipid-linked intermediates.
已证明柠檬酸杆菌139(大肠杆菌3苏黎世4,5,12:z(20))的O抗原生物合成过程通过一系列脂质连接中间体进行,这与沙门氏菌中参与O抗原合成的中间体相似。半乳糖是第一个掺入的糖,其次是鼠李糖和甘露糖。仅当其他三种核苷酸糖(尿苷二磷酸半乳糖、鸟苷二磷酸甘露糖和胸苷二磷酸鼠李糖)都存在时,阿比可糖才从胞苷二磷酸(CDP)-阿比可糖掺入。鼠李糖基-半乳糖基1-磷酸和甘露糖基-鼠李糖基-半乳糖基1-磷酸被鉴定为脂质连接中间体温和碱性水解的产物。