Erratum
The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification, by T. Cavalier-Smith
International Journal of Systematic and Evolutionary Microbiology vol. 52, part 1, pp. 7-76
During proof correction, an error was introduced into the descriptions of two taxa included in Table 1 (p. 12). The correct descriptions are given below.
Subkingdom 2. UNIBACTERIA (Cavalier-Smith, 1998) subregnum nov.
Cell bound by only a single cytoplasmic membrane; commonly with an external proteinaceous paracrystalline S-layer; protein secretion predominantly co-translational; SRP with helices 1–4
Division 1. Posibacteria (Cavalier-Smith, 1987b) divisio nov.
Acyl ester lipids; SRP RNA lacks helix 6; lacking SRP 19b; ancestrally with murein; thick-walled (Gram-positive) or thin-walled (Gram-negative); flagella with acid-soluble flagellin shafts; proteins with cleavable signal peptides secreted co-translationally via SRP or post-translationally via SecA; lacking N-linked glycoproteins – i.e. the traditional Firmicutes plus Mollicutes and Togobacteria
In other words, the property 'SRP with helices 1–4' applies to the Unibacteria as a whole, not only to the Posibacteria.
