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Abstract
Cinnamomin (CIN) belongs to a family of 10 kDa proteins designated as elicitins. Some of these proteins induce a hypersensitive response in diverse plant species, leading to resistance against fungal and bacterial plant pathogens. CIN was crystallized by the vapour-diffusion method using either ammonium sulfate or polyethyleneglycol (PEG) as precipitants in solutions buffered at around pH 7. These crystals are isomorphous and belong to the triclinic space group, with unit-cell parameters a = 31.69, b = 36. 99, c = 44.09 A, alpha = 76.86, beta = 84.41, gamma = 80.26 degrees. A frozen crystal diffracted X-rays beyond 1.45 A resolution on a synchrotron-radiation source.
Highlights
Cinnamomin is a polypeptide secreted by the oomycetous fungus P. cinnamomi Rands, a highly aggressive ®lamentous soilborne fungus and one of the world's most destructive plant pathogens
Cinnamomin belongs to a group of proteins called elicitins that are produced by members of the genus Phytophthora and by Pythium vexans (Kamoun et al, 1994; Ricci et al, 1989; Huet et al, 1995)
Elicitins can cause a hypersensitive response, including leaf necrosis and cell death, and induce systemic acquired resistance in some plant species (Kamoun et al, 1994; Ricci et al, 1992). According to their toxic activity, elicitins were classi®ed as acidic -elicitins and basic -elicitins, the former being less necrotic than the latter (Kamoun et al, 1993)
Summary
Cinnamomin is a polypeptide secreted by the oomycetous fungus P. cinnamomi Rands, a highly aggressive ®lamentous soilborne fungus and one of the world's most destructive plant pathogens. Cinnamomin belongs to a group of proteins called elicitins that are produced by members of the genus Phytophthora and by Pythium vexans (Kamoun et al, 1994; Ricci et al, 1989; Huet et al, 1995). These polypeptides are holoproteins containing 98 residues. Elicitins can cause a hypersensitive response, including leaf necrosis and cell death, and induce systemic acquired resistance in some plant species (Kamoun et al, 1994; Ricci et al, 1992). We report the crystallization and preliminary X-ray diffraction studies of the recombinant -cinnamomin
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Schedule a callMore From: Acta Crystallographica Section D Biological Crystallography
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