7boj | pdb_00007boj

Cryo-EM structure of the encapsulin shell from Mycobacterium smegmatis

spinqualitylabelsall models 7boj, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7boj is a 1 chain structure with sequence from Mycolicibacterium smegmatis mc2 155. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Encapsulins containing dye-decolorizing peroxidase (DyP)-type peroxidases are ubiquitous among prokaryotes, protecting cells against oxidative stress. However, little is known about how they interact and function. Here, we have isolated a native cargo-packaging encapsulin from Mycobacterium smegmatis and determined its complete high-resolution structure by cryogenic electron microscopy (cryo-EM). This encapsulin comprises an icosahedral shell and a dodecameric DyP cargo. The dodecameric DyP consists of two hexamers with a twofold axis of symmetry and stretches across the interior of the encapsulin. Our results reveal that the encapsulin shell plays a role in stabilizing the dodecameric DyP. Furthermore, we have proposed a potential mechanism for removing the hydrogen peroxide based on the structural features. Our study also suggests that the DyP is the primary cargo protein of mycobacterial encapsulins and is a potential target for antituberculosis drug discovery. Cryo-EM structure of Mycobacterium smegmatis DyP-loaded encapsulin.,Tang Y, Mu A, Zhang Y, Zhou S, Wang W, Lai Y, Zhou X, Liu F, Yang X, Gong H, Wang Q, Rao Z Proc Natl Acad Sci U S A. 2021 Apr 20;118(16). pii: 2025658118. doi:, 10.1073/pnas.2025658118. PMID:33853951 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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