title: Two new families of the FtsZ-tubulin protein superfamily implicated in membrane remodeling in diverse bacteria and archaea.
abstract: Several recent discoveries reveal unexpected versatility of the bacterial and archaeal cytoskeleton systems that are involved in cell division and other processes based on membrane remodeling. Here we apply methods for distant protein sequence similarity detection, phylogenetic approaches, and genome context analysis to described two previously unnoticed families of the FtsZ-tubulin superfamily. One of these families is limited in its spread to Proteobacteria whereas the other is represented in diverse bacteria and archaea, and might be the key component of a novel, multicomponent membrane remodeling system that also includes a Von Willebrand A domain-containing protein, a distinct GTPase and membrane transport proteins of the OmpA family.
authors.affiliation: National Center for Biotechnology Information, NLM, National Institutes of Health Bethesda, Maryland 20894, USA.
authors.forename: Kira S
authors.initials: KS
authors.lastname: Makarova
authors.forename: Eugene V
authors.initials: EV
authors.lastname: Koonin
mesh_terms: D001105:Archaea / Q000378:metabolism*; D019843:Archaeal Proteins / Q000737:chemistry / Q000145:classification / Q000378:metabolism*; D001419:Bacteria / Q000378:metabolism*; D001426:Bacterial Proteins / Q000737:chemistry / Q000145:classification / Q000378:metabolism*; D002462:Cell Membrane / Q000145:classification / Q000378:metabolism*; D010802:Phylogeny; D014404:Tubulin / Q000737:chemistry / Q000378:metabolism*
chemical_list: D019843:Archaeal Proteins; D001426:Bacterial Proteins; D014404:Tubulin
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