Ishikawa Jun, Yamashita Atsushi, Mikami Yuzuru, Hoshino Yasutaka, Kurita Haruyo, Hotta Kunimoto, Shiba Tadayoshi, Hattori Masahira
Department of Bioactive Molecules, National Institute of Infectious Diseases, Shinjuku, Tokyo 162-8640, Japan.
Proc Natl Acad Sci U S A. 2004 Oct 12;101(41):14925-30. doi: 10.1073/pnas.0406410101. Epub 2004 Oct 4.
We determined the genomic sequence of Nocardia farcinica IFM 10152, a clinical isolate, and revealed the molecular basis of its versatility. The genome consists of a single circular chromosome of 6,021,225 bp with an average G+C content of 70.8% and two plasmids of 184,027 (pNF1) and 87,093 (pNF2) bp with average G+C contents of 67.2% and 68.4%, respectively. The chromosome encoded 5,674 putative protein-coding sequences, including many candidate genes for virulence and multidrug resistance as well as secondary metabolism. Analyses of paralogous protein families suggest that gene duplications have resulted in a bacterium that can survive not only in soil environments but also in animal tissues, resulting in disease.
我们测定了临床分离株嗜皮疽诺卡氏菌IFM 10152的基因组序列,并揭示了其多功能性的分子基础。该基因组由一条6,021,225 bp的单环状染色体组成,平均G+C含量为70.8%,以及两个质粒,分别为184,027 bp(pNF1)和87,093 bp(pNF2),平均G+C含量分别为67.2%和68.4%。染色体编码了5,674个推定的蛋白质编码序列,包括许多毒力、多药耐药性以及次生代谢的候选基因。对旁系同源蛋白家族的分析表明,基因复制产生了一种不仅能在土壤环境中生存,还能在动物组织中生存并导致疾病的细菌。