Fig. 2

Structural prediction of XFII.. The overall structure of the catalytic module of XFII is exhibited in A (drawing) and B (Surface). The three catalytic residues are shown and highlighted. C Multiple amino acid sequence alignments of XFII with other characterized Salmonella endolysins from NCBI GenBank or PDB accession numbers were as follows: Salmonella phage LysSE24 (APU02985.1, similarity 98%), Salmonella phage PIZ SAE-01E2-12 (QGZ13172.1, similarity 98%), Salmonella phage SE2 (YP_005098118.1, similarity 92%,), Salmonella phage ST3(ASZ77923.1, similarity 91%), Salmonella phage SG2 (ASZ76574.1, similarity 90%), Salmonella phage SHWT1 (QNI20477.1, similarity 97%), Salmonella phage Lys SP1(QQK87820.1, similarity 93%), Salmonella phage ST3 (ASZ77923.1, similarity 91%), Salmonella phage ST4 (AFO70790.1, similarity 91%), and Salmonella phage TS3 (AZU99464.1, similarity 90%). Conserved amino acids were denoted by stars