Journal: iScience
Article Title: In silico reconstruction of a salmonid alphavirus virion reveals distinctive molecular features implicated in virulence
doi: 10.1016/j.isci.2026.115070
Figure Lengend Snippet: Aquatic and terrestrial alphavirus phylogeny and E2 envelope protein alignment (A) Phylogenetic tree of alphavirus structural protein sequences. The amino acid sequence of 17 representative terrestrial and aquatic alphaviruses were aligned and a maximum-likelihood (ML) phylogenetic tree was generated (LG [G + I] substitution model). Numbers at nodes indicate percent bootstrap support from 1,000 replicates. Tree drawn to scale with branch lengths measured in number of substitutions per site (scale bar). For each alphavirus, the known host range and vectors are indicated by animal diagrams. Experimentally determined virion structures are depicted for the following terrestrial alphaviruses: VEEV (PDB: 3j0c ); EEEV (PDB: 6odf ); SINV (PDB: 6imm ); WEEV (PDB: 8dec ); RRV (PDB: 6vyv ); MAYV (PDB: 7ko8 ); CHIKV (PDB: 3j2w ). (B) Amino acid sequence alignment of the N-term region of alphavirus E2. Protein sequences of the 17 aquatic and terrestrial alphaviruses in (A) were aligned and the region corresponding to E2 N-term is shown. The alignment reveals an amino acid insert present only in fish alphavirus E2 proteins (Indel, top). Salmonid alphavirus (SAV) is unique in harboring an additional stretch of three residues herein referred to as 7-8-9 triplet based on SAV E2 amino acid numbering.
Article Snippet: Cryo-EM Structure of Western Equine Encephalitis Virus , Protein DataBank (PDB) , 8dec.
Techniques: Sequencing, Generated