Evaluation of SARS-CoV-2 genomic architecture and its alteration pattern through ORF analysis/ Avaliação da arquitetura genômica do SARS-CoV-2 e seu padrão de alteração por meio de análise de ORF

Members of the Coronaviridae family comprise four genera Alphacoronavirus and Betacoronavirus , which infect only mammals, and Gammacoronavirus and Deltacoronavirus infect birds and mammals. Since the end of 2019, humanity has witnessed the emergence of a new pandemic caused by a line of beta-coronavirus (SARS-CoV-2) responsible for causing a novel severe acute respiratory syndrome named coronavirus disease (COVID-19) affecting countries worldwide. In this context, this work aimed to investigate the main changes in SARS-CoV-2 genomic architecture through the time since the beginning of the infection using in silico analysis. A genomic database was built using complete and revised genomes from NCBI as well as analyzed through sequencing alignment and phylogenetic softwares. This study was able to show a change in the organizational pattern of the genome of the new coronavirus for the different regions studied, in addition to showing specific changes in the genomic sequence requiring further analysis of the collected genomes and may provide new evidence for the key protein changes like Spike protein.