4a2a | pdb_00004a2a

Thermotoga maritima FtsA:FtsZ(336-351)

spinqualitylabelsall models 4a2a, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4a2a is a 4 chain structure with sequence from Thermotoga maritima. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ATP Related: 1w5f, 1e4g, 1e4f, 4a2b Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed FtsA is an early component of the Z-ring, the structure that divides most bacteria, formed by tubulin-like FtsZ. FtsA belongs to the actin family of proteins, showing an unusual subdomain architecture. Here we reconstitute the tethering of FtsZ to the membrane via FtsA's C-terminal amphipathic helix in vitro using Thermotoga maritima proteins. A crystal structure of the FtsA:FtsZ interaction reveals 16 amino acids of the FtsZ tail bound to subdomain 2B of FtsA. The same structure and a second crystal form of FtsA reveal that FtsA forms actin-like protofilaments with a repeat of 48 A. The identical repeat is observed when FtsA is polymerized using a lipid monolayer surface and FtsAs from three organisms form polymers in cells when overexpressed, as observed by electron cryotomography. Mutants that disrupt polymerization also show an elongated cell division phenotype in a temperature-sensitive FtsA background, demonstrating the importance of filament formation for FtsA's function in the Z-ring. FtsA forms actin-like protofilaments.,Szwedziak P, Wang Q, Freund SM, Lowe J EMBO J. 2012 Mar 30. doi: 10.1038/emboj.2012.76. PMID:22473211 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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