Supplementary Material for: The Complete Genome Sequence of <i> Bacillus licheniformis </i>DSM13, an Organism with Great Industrial Potential
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The genome of <i>Bacillus licheniformis </i>DSM13 consists of a single chromosome that has a size of 4,222,748 base pairs. The average G+C ratio is 46.2%. 4,286 open reading frames, 72 tRNA genes, 7 rRNA operons and 20 transposase genes were identified. The genome shows a marked co-linearity with <i>Bacillus subtilis </i>but contains defined inserted regions that can be identified at the sequence as well as at the functional level. <i>B. licheniformis </i>DSM13 has a well-conserved secretory system, no polyketide biosynthesis, but is able to form the lipopeptide lichenysin. From the further analysis of the genome sequence, we identified conserved regulatory DNA motives, the occurrence of the glyoxylate bypass and the presence of anaerobic ribonucleotide reductase explaining that <i>B. licheniformis </i>is able to grow on acetate and 2,3-butanediol as well as anaerobically on glucose. Many new genes of potential interest for biotechnological applications were found in <i>B. licheniformis</i>; candidates include proteases, pectate lyases, lipases and various polysaccharide degrading enzymes.
地衣芽孢杆菌(*Bacillus licheniformis*)DSM13的基因组由一条大小为4222748个碱基对的单染色体构成,其平均G+C含量为46.2%。研究共鉴定出4286个开放阅读框(open reading frame, ORF)、72个转运RNA(transfer RNA, tRNA)基因、7个核糖体RNA(ribosomal RNA, rRNA)操纵子以及20个转座酶基因。该基因组与枯草芽孢杆菌(*Bacillus subtilis*)呈现显著的共线性,但存在可在序列及功能层面被识别的明确插入区域。地衣芽孢杆菌DSM13拥有高度保守的分泌系统,不具备聚酮生物合成(polyketide biosynthesis)途径,但可合成脂肽类物质地衣素(lichenysin)。通过对基因组序列的进一步分析,本研究鉴定出保守的调控DNA基序、乙醛酸旁路(glyoxylate bypass)的存在,以及厌氧核糖核苷酸还原酶(anaerobic ribonucleotide reductase)的存在,上述特征解释了地衣芽孢杆菌可利用乙酸、2,3-丁二醇以及厌氧条件下的葡萄糖进行生长的特性。在地衣芽孢杆菌中还发现了诸多具备生物技术应用潜力的新基因,候选基因包括蛋白酶、果胶酸裂解酶、脂肪酶以及多种多糖降解酶。




