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Osmotin, thaumatin-like protein superfamily
SCOP classification
Superfamily statistics
Functional annotation
| General category | Processes_EC |
| Detailed category | Toxins/defense |
Document: Function annotation of SCOP domain superfamilies
Worm Phenotype (WP) (show details)
Highlighted in gray are those with FDR_all>0.001
Document: WP annotation of SCOP domains
Arabidopsis Plant Ontology (AP) (show details)
Highlighted in gray are those with FDR_all>0.001
Document: AP annotation of SCOP domains
InterPro annotation
| Cross references | IPR001938 SSF49870 Protein matches |
| Abstract | Pathogenesis related (PR) proteins, which are induced by various agents ranging from ethylene to pathogens, are structurally diverse and apparently ubiquitous in plants [ 1463856]: they include thaumatin, osmotin, tobacco major and minor PR proteins, alpha-amylase/trypsin inhibitor, and P21 and PWIR2 soybean and wheat leaf proteins. The proteins are involved in systematically acquired resistance and stress response in plants, although their precise role is unknown [1463856]. Thaumatin is an intensely sweet tasting protein (about 100,000 times sweeter than sucrose [7049841]) found in the West African shrub Thaumatococcus daniellii: it is induced by attack by viroids, which are single-stranded unencapsulated RNA molecules that do not code for protein. Like other PR proteins, thaumatin is predicted to have a mainly beta structure, with a high content of beta-turns and little helix [1463856].
Tobacco cells exposed to gradually increased salt concentrations develop a greatly increased tolerance to salt, due to the expression of osmotin, a member of the PR protein family. Wheat plants attacked by barley powdery mildew express a PR protein (PWIR2), which results in resistance against that infection [1650615]. The similarity between this and other PR proteins to the maize alpha-amylase/trypsin inhibitor has suggested that PR proteins may act as some form of inhibitor [1650615]. |
InterPro database
PDBeMotif information about ligands, sequence and structure motifs
PDBeMotif resource
Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Worm Phenotype (WP) · Arabidopsis Plant Ontology (AP) ]
Internal database links
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Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry
out SCOP domain assignments to all genomes at the superfamily level.
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Alignments of sequences to 12 models
in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical
are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.
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Browse and view proteins in genomes which have
different domain combinations including a Osmotin, thaumatin-like protein domain.
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Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.
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Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.
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There are 12 hidden Markov models representing the Osmotin, thaumatin-like protein superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.
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Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Worm Phenotype (WP) · Arabidopsis Plant Ontology (AP) · Internal database links ]
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