The present invention relates to a method for preparing Lipid II, which method comprises the steps of preparing a mixture of bacterial membranes, uridine diphosphate N-acetylmuramyl peptide (UDP-MurNAc), uridine diphosphate N-acetylglucosamine (GlcNAc), a chain of n prenyl residues, wherein n is at least 2, and optionally a detergent in a buffer; reacting the mixture thus obtained to prepare an n-Lipid II containing mixture, wherein n represents the amount of prenyl residues in the Lipid II molecule and wherein n is at least 2; and optionally further purifying the n-Lipid II containing mixture. Preferably n is selected from the range 2-25. Instead of bacterial membranes the reaction mixture may comprise isolated enzymes, such as MraY (undecaprenyl phosphate phospho-N-acetylmuramoyl-pentapeptide transferase).
本发明涉及一种制备脂质 II 的方法,该方法包括以下步骤:在缓冲液中制备细菌膜、二
磷酸尿苷 N-乙酰
氨酰肽(
UDP-MurNAc)、二
磷酸尿苷 N-乙酰
葡糖胺(GlcNAc)、n 个炔基残基链(其中 n 至少为 2)和去垢剂的混合物;将由此得到的混合物进行反应,制备含有 n-脂质 II 的混合物,其中 n 代表脂质 II 分子中炔基残基的数量,其中 n 至少为 2;并可选择进一步纯化含有 n-脂质 II 的混合物。n 最好选自 2-25 的范围。反应混合物中可以不包含细菌膜,而是包含分离出来的酶,如 MraY(十一烯丙基
磷酸磷酸-N-乙酰基木酰基五肽转移酶)。