Phylogenetic analysis of first Bangladeshi SARS-CoV-2 strain isolated in
Bangladesh understanding the possible origin and novel mutations
Abstract
Severe acute respiratory syndrome virus 2 (SARS-CoV-2), the causative
agent of the ongoing pandemic of COVID-19 has already marched across 210
countries globally. This novel coronavirus is highly infectious and left
us with no available cure and only with containment option. To
understand the molecular epidemiology and vaccine design, genetic
sequences from different regions are published and analyzed. Here, the
first published whole genome sequence of Bangladesh was compared with
Asian countries as well as representative strains from across the globe.
Phylogenetic analysis of the first Bangladeshi genome, that was
published on May 12, 2020 revealed at least 9 Single nucleotide
polymorphisms from the Wuhan, China strains and 2 of these mutations are
novel compared to the strains analyzed. Among the novel mutations
nucleotide 1163 mutation is very novel when compared with all the
genomes deposited at Global Initiative on Sharing Avian Influenza Data
(GISAID). However, the other mutation at nucleotide 17019, mutation
NSP13 E261D is occurred second time after a strain from Austrian patient
showed the similar mutation. Structure and screening results of both
novel mutation were discussed in detail. Further analysis of these
identified novel mutations will boost the understanding of the behavior
of SARS-CoV-2 in this region and vaccination and drug development
programs would be beneficial.