辅助质粒pMON7124含有tnsABCD区(tnsABCD region supplies the transposition proteins required for insertion of the mini-Tn7 from the donor plasmid into its target site on the parent bacmid),具有四环素抗性,在细胞扩增过程中丢失,但可提高供体质粒pFastBac转化后的基因转座效率。
mcrA、mcrBC及mrr突变使DH10Bac菌株适合于克隆富含甲基胞嘧啶或甲基腺嘌呤的DNA(Therefore , genomic DNA , both prokaryotic and eukaryotic, can be cloned efficiently in DH10Bac)。recA1和endA1的突变有利于插入DNA的稳定和高纯度质粒DNA的提取。φ80dlacZ∆M15的存在使DH10Bac可用于蓝白斑筛选,High5TM系列DH10Bac感受态细胞经特殊工艺制作,经pUC19质粒检测转化效率>108cfu/μg。