5kds

ZmpB metallopeptidase in complex with an O-glycopeptide (a2,6-sialylated core-3 pentapeptide).

spinqualitylabelsall models 5kds, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5kds is a 2 chain structure with sequence from Bos taurus and Clostridium perfringens ATCC 13124. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.6Å Ligands: A2G, EDO, EPE, NAG, SIA, TLA, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A0H2YN38_CLOP1 Publication Abstract from PubMed The vast majority of proteins are posttranslationally altered, with the addition of covalently linked sugars (glycosylation) being one of the most abundant modifications. However, despite the hydrolysis of protein peptide bonds by peptidases being a process essential to all life on Earth, the fundamental details of how peptidases accommodate posttranslational modifications, including glycosylation, has not been addressed. Through biochemical analyses and X-ray crystallographic structures we show that to hydrolyze their substrates, three structurally related metallopeptidases require the specific recognition of O-linked glycan modifications via carbohydrate-specific subsites immediately adjacent to their peptidase catalytic machinery. The three peptidases showed selectivity for different glycans, revealing protein-specific adaptations to particular glycan modifications, yet always cleaved the peptide bond immediately preceding the glycosylated residue. This insight builds upon the paradigm of how peptidases recognize substrates and provides a molecular understanding of glycoprotein degradation. Recognition of protein-linked glycans as a determinant of peptidase activity.,Noach I, Ficko-Blean E, Pluvinage B, Stuart C, Jenkins ML, Brochu D, Buenbrazo N, Wakarchuk W, Burke JE, Gilbert M, Boraston AB Proc Natl Acad Sci U S A. 2017 Jan 17. pii: 201615141. doi:, 10.1073/pnas.1615141114. PMID:28096352 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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