Fig. 1

Isolation and identification of S. aureus phage SYL. A Phages against MRSA XN108 obtained after an enrichment procedure. A schematic diagram showing the enrichment procedure (left panel). Phages with various lytic phenotypes against MRSA XN108 were purified and named (right panel). B Representative transmission electron micrographs of the phage SYL. C Genomic map of S. aureus phage SYL showing coding sequences (CDSs), tRNA, repeat region, GC content, GC skew⁺, and GC skew⁻ by schematic diagrams. D Predicted tertiary structure model of endolysin LysSYL. E Schematic illustration of structure of endolysin LysSYL.