Description
Description: Peptidoglycan recognition protein 1, also known as TAG7, is a protein that in humans is encoded by the PGLYRP1 gene. The PGLYRP1 gene is highly expressed in bone marrow, circulating Polymorphonuclear leukocytes (PMLs), and in the corneal epithelium. The PGLYRP1 protein is primarily found in the granules of PMLs. The PGLYRP1 protein plays an important role in the innate immune response. It is bactericidal against gram-positive bacteria such as S. aureus, S. epidermidis, and L. monocytogenes and generally has proinflammatory effects, inducing TNF-a and IFN-g in many tissues. PGLYRP-1 is also known to form a cytotoxic complex with HSP-70, suggesting it may also have a role in anti-cancer defense. As a pathogen recognition protein with antimicrobial properties, PGLYRP-1 is suspected to play an important role in maintaining the gut microbial flora.
Protein Function: Pattern receptor that binds to murein peptidoglycans (PGN) of Gram-positive bacteria. Has bactericidal activity towards Gram-positive bacteria. May kill Gram-positive bacteria by interfering with peptidoglycan biosynthesis. Binds also to Gram- negative bacteria. Involved in innate immunity. May function in intracellular killing of bacteria. The soluble form triggers apoptosis in vitro