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Complete genome sequencing and analysis of Saprospira grandis str. Lewin, a predatory marine bacterium

机译:完整的Saprospira grandis str基因组测序和分析。 Lewin,掠食性海洋细菌

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Saprospira grandis is a coastal marine bacterium that can capture and prey upon other marine bacteria using a mechanism known as ‘ixotrophy’. Here, we present the complete genome sequence of Saprospira grandis str. Lewin isolated from La Jolla beach in San Diego, California. The complete genome sequence comprises a chromosome of 4.35 Mbp and a plasmid of 54.9 Kbp. Genome analysis revealed incomplete pathways for the biosynthesis of nine essential amino acids but presence of a large number of peptidases. The genome encodes multiple copies of sensor globin-coupled rsbR genes thought to be essential for stress response and the presence of such sensor globins in Bacteroidetes is unprecedented. A total of 429 spacer sequences within the three CRISPR repeat regions were identified in the genome and this number is the largest among all the Bacteroidetes sequenced to date.
机译:巨大的腐生螺旋藻是一种沿海海洋细菌,可以利用一种称为“ ixotrophy”的机制捕获并捕食其他海洋细菌。在这里,我们介绍了Saprospira grandis str的完整基因组序列。 Lewin从拉霍亚海滩隔离在加利福尼亚州圣地亚哥。完整的基因组序列包含4.35 Mbp的染色体和54.9 Kbp的质粒。基因组分析显示九种必需氨基酸的生物合成途径不完整,但存在大量肽酶。基因组编码传感器球蛋白偶联的rsbR基因的多个副本,这些基因被认为对应激反应至关重要,而拟杆菌中这种传感器球蛋白的存在是前所未有的。在基因组中的三个CRISPR重复区域中总共鉴定出429个间隔子序列,这个数字是迄今为止所有测序的拟杆菌中最大的。

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