6RIQ

MinCD filament from Pseudomonas aeruginosa

Summary for 6RIQ

• Entry DOI: 10.2210/pdb6riq/pdb
• EMDB information: 4897
• Descriptor: MinC, Site-determining protein, MAGNESIUM ION, ... (4 entities in total)
• Functional Keywords: bacterial cell division, protein fibril
• Biological source: Pseudomonas aeruginosa; More
• Total number of polymer chains: 22
• Total formula weight: 498782.92

Authors

Szewczak-Harris, A.,Wagstaff, J.,Lowe, J. (deposition date: 2019-04-24, release date: 2019-06-19, Last modification date: 2025-04-09)

Primary citation

Szewczak-Harris, A.,Wagstaff, J.,Lowe, J.
Cryo-EM structure of the MinCD copolymeric filament from Pseudomonas aeruginosa at 3.1 angstrom resolution.
Febs Lett., 593:1915-1926, 2019

PubMed Abstract: Positioning of the division site in many bacterial species relies on the MinCDE system, which prevents the cytokinetic Z-ring from assembling anywhere but the mid-cell, through an oscillatory diffusion-reaction mechanism. MinD dimers bind to membranes and, via their partner MinC, inhibit the polymerization of cell division protein FtsZ into the Z-ring. MinC and MinD form polymeric assemblies in solution and on cell membranes. Here, we report the high-resolution cryo-EM structure of the copolymeric filaments of Pseudomonas aeruginosa MinCD. The filaments consist of three protofilaments made of alternating MinC and MinD dimers. The MinCD protofilaments are almost completely straight and assemble as single protofilaments on lipid membranes, which we also visualized by cryo-EM.

PubMed: 31166018
DOI: 10.1002/1873-3468.13471

Experimental method

ELECTRON MICROSCOPY (3.1 Å)