6q24

Structure of pro-Esp mutant- S235A

spinqualitylabelsall models 6q24, resolution 1.85Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6q24 is a 1 chain structure with sequence from Staphylococcus epidermidis ATCC 12228. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.85Å Ligands: MSE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function GSEA_STAES Exhibits a significant hydrolytic activity for the carbonyl side of glutamic acid. Shows activity toward human fibronectin and type 1 collagen (By similarity). Publication Abstract from PubMed Extracellular serine protease (Esp) from Staphylococcus epidermidis is a glutamyl endopeptidase that inhibits the growth and formation of S. aureus biofilms. Previously, crystal structures of the matured and active Esp have been determined. Interestingly, many of the staphylococcal glutamyl endopeptidase zymogens, including V8 from Staphylococcus aureus and Esp from S. epidermidis, contain unusually long pro-peptide segments; however, their function is not known. With the aim of elucidating the function of these pro-peptide segments, crystal structures of the Esp zymogen (Pro-Esp) and its variants were determined. It was observed that the N-terminus of the Pro-Esp crystal structure is flexible and is not associated with the main body of the enzyme, unlike in the known active Esp structure. In addition, the loops that border the putative substrate-binding pocket of Pro-Esp are flexible and disordered; the structural components that are responsible for enzyme specificity and efficiency in serine proteases are disordered in Pro-Esp. However, the N-terminal locked Pro-Esp variants exhibit a rigid substrate-binding pocket similar to the active Esp structure and regain activity. These structural studies highlight the role of the N-terminus in stabilizing the structural components responsible for the activity and specificity of staphylococcal glutamyl endopeptidases. Structural insights into the role of the N-terminus in the activation and function of extracellular serine protease from Staphylococcus epidermidis.,Manne K, Narayana SVL Acta Crystallogr D Struct Biol. 2020 Jan 1;76(Pt 1):28-40. doi:, 10.1107/S2059798319015055. Epub 2020 Jan 1. PMID:31909741 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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