1r77

Crystal structure of the cell wall targeting domain of peptidylglycan hydrolase ALE-1Crystal structure of the cell wall targeting domain of peptidylglycan hydrolase ALE-1

Structural highlights 1r77 is a 2 chain structure with sequence from Atcc 27840. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Activity: Interstitial collagenase, with EC number 3.4.24.7 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [ALE1_STACP] Lyses staphylococcal cells by hydrolyzing the polyglycine interpeptide bridges of the peptidoglycan. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed ALE-1, a homologue of lysostaphin, is a peptidoglycan hydrolase that specifically lyses Staphylococcus aureus cell walls by cleaving the pentaglycine linkage between the peptidoglycan chains. Binding of ALE-1 to S. aureus cells through its C-terminal 92 residues, known as the targeting domain, is functionally important for staphylolytic activity. The ALE-1-targeting domain belongs to the SH3b domain family, the prokaryotic counterpart of the eukaryotic SH3 domains. The 1.75 angstroms crystal structure of the targeting domain shows an all-beta fold similar to typical SH3s but with unique features. The structure reveals patches of conserved residues among orthologous targeting domains, forming surface regions that can potentially interact with some common features of the Gram-positive cell wall. ALE-1-targeting domain binding studies employing various bacterial peptidoglycans demonstrate that the length of the interpeptide bridge, as well as the amino acid composition of the peptide, confers the maximum binding of the targeting domain to the staphylococcal peptidoglycan. Truncation of the highly conserved first 9 N-terminal residues results in loss of specificity to S. aureus cell wall-targeting, suggesting that these residues confer specificity to S. aureus cell wall. Cell wall-targeting domain of glycylglycine endopeptidase distinguishes among peptidoglycan cross-bridges.,Lu JZ, Fujiwara T, Komatsuzawa H, Sugai M, Sakon J J Biol Chem. 2006 Jan 6;281(1):549-58. Epub 2005 Oct 28. PMID:16257954 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

spinqualitylabelsall models 1r77, resolution 1.75Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image