The Crystal Structure of a Pathogenic Protein from the Xanthomonas campestris Reveals a New Tetrameric PilZ Domain Self-Assembled via a Unusual Helical Bundle
Tetrameric PilZ (tPliZ, previously known as PilZ_2) is a family of cyclic di-GMP receptors found in Proteobacteria plant pathogens. tPilZ forms a tetramer that adopts a novel 'house-like' construct, with a central pillar domain of the four vertical a ...
Tetrameric PilZ (tPliZ, previously known as PilZ_2) is a family of cyclic di-GMP receptors found in Proteobacteria plant pathogens. tPilZ forms a tetramer that adopts a novel 'house-like' construct, with a central pillar domain of the four vertical alpha3 helices, a roof-top domain made up of the eight inclined alpha2 and alpha4 helices, and four corner-stone domains making up the PilZ domain. Cyclic-di-GMP is a universal secondary messenger molecule extensively involved in regulating bacterial pathogenicity which binds to cytoplasmic receptors containing PilZ domains [1,2]. This domain is referred to as an atypical PilZ domain, it has the same structure as canonical PilZ domains with the exception of a short N-terminal alpha-helix and an insert that forms two additional alpha-helices [2].
