PGLYRP4/PGRP-I beta protein is a model receptor that binds to the cell wall peptide peptidoglycan (PGN) in Gram-positive bacteria and exerts bactericidal activity by interfering with peptidoglycan biosynthesis. Its antimicrobial properties extend to Gram-negative bacteria, although it also binds to them. PGLYRP4/PGRP-I beta Protein, Human (HEK293, His) is the recombinant human-derived PGLYRP4/PGRP-I beta protein, expressed by HEK293 , with C-His labeled tag.