7xu8 | pdb_00007xu8

Structure of the complex of camel peptidoglycan recognition protein-short (PGRP-S) with heptanoic acid at 2.15 A resolution.

spinqualitylabelsall models 7xu8, resolution 2.15Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7xu8 is a 4 chain structure with sequence from Camelus dromedarius. This structure supersedes the now removed PDB entry 3uml. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.15Å Ligands: CO3, EDO, MPD, NA, PEO, SHV Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PGRP1_CAMDR 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. Is microbicidal for Gram-positive and Gram-negative bacteria and yeast. May function in intracellular killing of bacteria (By similarity). Publication Abstract from PubMed Peptidoglycan recognition proteins (PGRPs) are important components of the innate immune system which provide the first line of defense against invading microbes. There are four members in the family of PGRPs in animals of which PGRP-S is a common domain. It is responsible for the binding to microbial cell wall molecules. In order to understand the mode of binding of PGRP-S to the components of the bacterial cell wall, the structure of the complex of camel PGRP-S (CPGRP-S) with heptanoic acid has been determined at 2.15 A resolution. The structure determination showed the presence of four crystallographically independent protein molecules which are designated as A, B, C, and D. These four protein molecules associate in the form of two homodimers which are represented as A-B and C-D dimers. The association between molecules A and B gives rise to a shallow cleft on the surface at one end of the dimeric interface. One molecule of heptanoic acid is observed at this binding site in the A-B dimer. The association of C and D molecules results in the formation of a long zig-zag tunnel along with the C-D interface. In the cleft at the C-D interface, three molecules of hydrogen peroxide along with other non-water solvent molecules have been observed. The analysis of the several complexes of CPGRP-S with fatty acids and non-fatty acids such as peptidoglycan, lipopolysaccharide, and lipoteichoic acid shows that the fatty acids bind at the A-B site while non-fatty acids interact through C-D interface. Ligand recognition by peptidoglycan recognition protein-S (PGRP-S): structure of the complex of camel PGRP-S with heptanoic acid at 2.15 A resolution.,Maurya A, Ahmad N, Singh PK, Viswanathan V, Kaur P, Sharma P, Sharma S, Singh TP Int J Biochem Mol Biol. 2022 Aug 20;13(4):28-39. eCollection 2022. PMID:36188729 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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