Origin and genomic characteristics of SARS-CoV-2 and its interaction with angiotensin converting enzyme type 2 receptors, focusing on the gastrointestinal tract

Figure 3 Severe acute respiratory syndrome coronavirus 2 schematic structure. A: Schematic representation of the genomic organization of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2); B: Schematic diagram of the structural features of SARS-CoV-2 and its primary structural proteins. The above diagrams were created with Biorender.com. Kb: kilobase pair; ORF: Open reading frame; SARS-CoV-2: Severe acute respiratory syndrome coronavirus 2; S: Spike protein; E: Envelope protein; M: Membrane protein; N: Nucleocapsid protein.