PGLYRP-1/PGRP-S (E3B6M) Rabbit Monoclonal Antibody #19360

The human peptidoglycan recognition protein (PGRP) family is composed of four independent genes named for the relative length of their translated product. Human PGRP family proteins are soluble pattern-recognition receptors of the innate immune response that bind peptidoglycan and Gram-positive bacteria, and have direct bactericidal activity (1,2). PGRP-short (PGRP-S), also known as PGLYRP-1 and Tag7, is 196 amino acids (aa) in length (3). PGLYRP-1/PGRP-S is a secreted glycoprotein expressed by neutrophils that participates in killing phagocytized bacteria (4,5). PGLYRP-1/PGRP-S also has been shown to form a stable cytotoxic complex with the heat shock protein Hsp70 to induce tumor cell death (6,7). PGRP-long (PGRP-L), also known as PGLYRP-2, is 576 aa long. PGLYRP-2/PGRP-L is an N-acetylmuramoyl-L-alanine amidase that hydrolyzes bacterial peptidoglycan (8,9). PGRP-intermediate alpha, also known as PGLYRP-3, and PGRP-intermediate beta, also known as PGLYRP-4, are 341 aa and 373 aa long, respectively. PGLYRP-3 and PGLYRP-4 are co-expressed in the same cells and are exclusively secreted as homo- or heterodimers with antibacterial function (10).