8kb2 | pdb_00008kb2

Crystal Structure of M- and C-Domains of the shaft pilin LrpA from Ligilactobacillus ruminis - iodide derivative

spinqualitylabelsall models 8kb2, resolution 1.91Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8kb2 is a 1 chain structure with sequence from Ligilactobacillus ruminis ATCC 25644. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.91Å Ligands: CL, EDO, GOL, IOD, NA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function E7FRT5_9LACO Publication Abstract from PubMed Sortase-dependent pili are long surface appendages that mediate attachment, colonization and biofilm formation in certain genera and species of Gram-positive bacteria. Ligilactobacillus ruminis is an autochthonous gut commensal that relies on sortase-dependent LrpCBA pili for host adherence and persistence. X-ray crystal structure snapshots of the backbone pilin LrpA were captured in two atypical bent conformations leading to a zigzag morphology in the LrpCBA pilus structure. Small-angle X-ray scattering and structural analysis revealed that LrpA also adopts the typical linear conformation, resulting in an elongated pilus morphology. Various conformational analyses and biophysical experiments helped to demonstrate that a hinge region located at the end of the flexible N-terminal domain of LrpA facilitates a new closure-and-twist motion for assembling dynamic pili during the assembly process and host attachment. Further, the incongruent combination of flexible domain-driven conformational dynamics and rigid isopeptide bond-driven stability observed in the LrpCBA pilus might also extend to the sortase-dependent pili of other bacteria colonizing a host. The crystal structure of the N-terminal domain of the backbone pilin LrpA reveals a new closure-and-twist motion for assembling dynamic pili in Ligilactobacillus ruminis.,Prajapati A, Palva A, von Ossowski I, Krishnan V Acta Crystallogr D Struct Biol. 2024 Jul 1;80(Pt 7):474-492. doi: , 10.1107/S2059798324005114. Epub 2024 Jun 27. PMID:38935340 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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