Phylodynamic analysis and spike protein mutations in porcine deltacoronavirus with a new variant introduction in Taiwan.

ABSTRACT: Porcine deltacoronavirus (PDCoV) is a highly transmissible intestinal pathogen that causes mild to severe clinical symptoms, such as anorexia, vomiting, and watery diarrhea in pigs. By comparing the genetic sequences of the spike glycoprotein between historical and current Taiwanese PDCoV strains, we identified a novel PDCoV variant that displaced the PDCoV responsible for the 2015 epidemic. This PDCoV variant belongs to a young population within the US lineage, and infected pigs carry high concentrations of the virus. It also has several critical point mutations and an amino acid insertion at position 52 that may enhance the affinity between the B-cell epitopes located in the N-terminal domain with its complementarity regions, consequently facilitating binding or penetration between the f

SUBMITTER: Hsueh FC 

PROVIDER: S-EPMC8634457 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature