Abstract
Hydrophobic-cluster analysis was used to characterize a conserved domain located near the C-terminal amino acid sequence of wheat (Triticum aestivum) storage proteins. This domain was transformed into a linear template for a global search for similarities in over 5200 protein sequences. In addition to proteins that had already been found to exhibit homology to wheat storage proteins, a previously unreported homology was found with non-specific lipid-transfer proteins from castor bean (Ricinus communis) and from spinach (Spinacia oleracea) leaf. Hydrophobic-cluster analysis of various members of the present protein group clearly shows a typical domain structure where (i) variable and conserved domains are located along the sequence at precise positions, (ii) the conserved domains probably reflect a common ancestor, and (iii) the unique properties of a given protein (chain cut into subunits, repetitive domains, trypsin-inhibitor active site) are associated with the variable domains.
MeSH Terms
Amino Acid Sequence
Antigens, Plant
Carrier Proteins
Molecular Sequence Data
Plant Proteins
Prolamins
Proteins
Sequence Homology, Nucleic Acid
Species Specificity
Triticum/chemistry
Chemicals
Antigens, Plant
Carrier Proteins
Plant Proteins
Prolamins
Proteins
lipid transfer proteins, plant
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Henrissat B
Laboratoire de Biochimie et Technologie des Protéines, Institut National de la Recherche Agronomique, Nantes, France.
Popineau Y
Kader J C
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