These vectors can have different features ( such as the size of DNA-insert they can accommodate ) and include plasmids, cosmids, and yeast artificial chromosomes ( YACs ). 这些载体具有不同的特征,包括质粒、粘粒和酵母人工染色体(YAC)。
Yeast artificial chromosomes ( YACs ) can be used to clone and analyze large segments of genomic DNA and permit the isolation of sequences which are impossible to maintain in Escherichia coli. 人工酵母染色体(YAC)可以克隆和分析大片段的染色体DNA,并且可以分离那些在大肠杆菌(escherichiacoli)中不可能得到的序列。
Given the high capacity of yeast artificial chromosomes ( YAC ) and bacterial artificial chromosomes ( BAC ), using YAC and BAC as transgenic vectors may be an ideal tool because they can contain all major important elements of lacto protein. 酵母人工染色体(YAC)(YAC)和细菌人工染色体(BAC)具有容量大的特性,可以将乳蛋白的整个基因座包括所有调控序列全部装载进去,有可能克服位点效应的影响,是一种理想的载体。