Kumar Pawan, Das Shukla, Tigga Richa, Pandey Rajesh, Bhattacharya S N, Taneja Bhupesh
CSIR-Institute of Genomics and Integrative Biology, New Delhi, 110025 India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India.
3 Biotech. 2021 Sep;11(9):402. doi: 10.1007/s13205-021-02950-1. Epub 2021 Aug 9.
In the current study, we report the genome sequence of two different clinical isolates from India, UCMS-IGIB-CI12 and UCMS-IGIB-CI14. The resulting genome assembly achieved a 143-fold coverage in 824 contigs for UCMS-IGIB-CI12 and a 136-fold coverage in 904 contigs for UCMS-IGIB-CI14. Both the clinical isolates contain a c.1342G>A mutation corresponding to Ala448Thr amino acid substitution in and exhibit an intermittent drug response to terbinafine. Comparative genomics analysis with available genomes of / species complex revealed a similar genome architecture and identified large number of genes associated with virulence and pathogenicity, namely, lipases, proteases, LysM domain-containing factors, carbon metabolism enzymes and cytochrome P450 enzymes, in all the genomes. An analysis of single amino acid polymorphisms (SAPs) in the protein sequences of subtilisin and lipase enzyme families identified a higher frequency of SAPs in functionally important proteins, Sub3 and Sub6 and their possible use in multilocus phylogenetic analysis of / species complex. The whole genome sequences of clinical isolates provided in this report will, hence, serve as a key reference point for investigation of clinical strains and emerging drug resistance among dermatophytes originating from different parts of the world.
在本研究中,我们报告了来自印度的两种不同临床分离株UCMS - IGIB - CI12和UCMS - IGIB - CI14的基因组序列。对于UCMS - IGIB - CI12,所得基因组组装在824个重叠群中实现了143倍覆盖,对于UCMS - IGIB - CI14,在904个重叠群中实现了136倍覆盖。这两种临床分离株均含有一个c.1342G>A突变,该突变对应于 中的Ala448Thr氨基酸替换,并且对特比萘芬表现出间歇性药物反应。与 / 物种复合体的可用基因组进行比较基因组学分析,揭示了相似的基因组结构,并在所有基因组中鉴定出大量与毒力和致病性相关的基因,即脂肪酶、蛋白酶、含LysM结构域的因子、碳代谢酶和细胞色素P450酶。对枯草杆菌蛋白酶和脂肪酶酶家族蛋白质序列中的单氨基酸多态性(SAPs)分析发现,功能重要的蛋白质Sub3和Sub6中SAPs的频率较高,以及它们在 / 物种复合体多位点系统发育分析中的可能用途。因此,本报告中提供的 临床分离株的全基因组序列将作为研究源自世界不同地区的皮肤癣菌临床菌株和新出现的耐药性的关键参考点。