Suryavanshi Mangesh V, Paul Dhiraj, Doijad Swapnil P, Bhute Shrikant S, Hingamire Tejashri B, Gune Rahul P, Shouche Yogesh S
Microbial Culture Collection, National Centre for Cell Science, Ganeshkhind, Pune, 411007 India.
Institute of Medical Microbiology, Biomedizinisches Forschungszentrum Seltersberg, Schubertstr. 81, Giessen, 35392 Germany.
Stand Genomic Sci. 2017 Jan 30;12:15. doi: 10.1186/s40793-017-0222-x. eCollection 2017.
Probiotic species offer various health benefits, thus have been employed in treatment and prevention of various diseases. Due to the differences in the isolation source and the site of action, most of the lactobacilli tested in-vitro for probiotics properties fail to extend similar effects in-vivo. Consequently, the search of autochthonous, efficacious and probably population specific probiotics is a high priority in the probiotics research. In this regards, whole genome sequencing of as many as possible will help to deepen our understanding of biology and their health effects. Here, we provide the genomic insights of two coherent oxalic acid tolerant species (E2C2 and E2C5) isolated from two different healthy human gut flora. These two isolates were found to have higher tolerance towards oxalic acid (300 mM sodium oxalate). The draft genome of strain E2C2 consists of 3,603,563 bp with 3289 protein-coding genes, 94 RNA genes, and 43.99% GC content, while E2C5 contained 3,615,168 bp, 3293 coding genes (93.4% of the total genes), 95 RNA genes and 43.97% GC content. Based on 16S rRNA gene sequence analysis followed by DNA-DNA hybridization studies, both the strains were identified as belonging to family within the phylum . Both the strains were genomically identical, sharing 99.99% CDS that showed 112 SNPs. Both the strains also exhibited deconjugation activity for the bile salts while genome analysis revealed that the strains E2C2 and E2C5 also have the ability to produce vitamins, biotin, alpha- and beta- glucosidase suggesting potential probiotic activities of the isolates. The description presented here is based on the draft genomes of strains E2C2 and E2C5 which are submitted to GenBank under the accession numbers LSST00000000.1 and LTCD00000000.1, respectively.
益生菌具有多种健康益处,因此已被用于各种疾病的治疗和预防。由于分离来源和作用部位的差异,大多数在体外测试益生菌特性的乳酸菌在体内无法产生类似效果。因此,寻找本土的、有效的且可能针对特定人群的益生菌是益生菌研究的当务之急。在这方面,尽可能多地进行全基因组测序将有助于加深我们对其生物学特性及其健康影响的理解。在此,我们提供了从两种不同的健康人体肠道菌群中分离出的两种耐草酸相关菌株(E2C2和E2C5)的基因组见解。发现这两种分离株对草酸(300 mM草酸钠)具有更高的耐受性。菌株E2C2的基因组草图由3,603,563 bp组成,有3289个蛋白质编码基因、94个RNA基因,GC含量为43.99%,而E2C5包含3,615,168 bp、3293个编码基因(占总基因的93.4%)、95个RNA基因,GC含量为43.97%。基于16S rRNA基因序列分析以及DNA-DNA杂交研究,这两种菌株均被鉴定为属于该门内的科。这两种菌株在基因组上是相同的,共享99.99%的编码序列,显示有112个单核苷酸多态性。这两种菌株对胆盐也表现出脱结合活性,而基因组分析表明,菌株E2C2和E2C5也有能力产生维生素、生物素、α-和β-葡萄糖苷酶,表明这些分离株具有潜在的益生菌活性。这里呈现的描述基于菌株E2C2和E2C5的基因组草图,它们分别以登录号LSST00000000.1和LTCD00000000.1提交至GenBank。