Nucleic acid (cDNA) and amino acid sequences of alpha-type gliadins from wheat (Triticum aestivum).
AUTOR(ES)
Kasarda, D D
RESUMO
The complete amino acid sequence for an alpha-type gliadin protein of wheat (Triticum aestivum Linnaeus) endosperm has been derived from a cloned cDNA sequence. An additional cDNA clone that corresponds to about 75% of a similar alpha-type gliadin has been sequenced and shows some important differences. About 97% of the composite sequence of A-gliadin (an alpha-type gliadin fraction) has also been obtained by direct amino acid sequencing. This sequence shows a high degree of similarity with amino acid sequences derived from both cDNA clones and is virtually identical to one of them. On the basis of sequence information, after loss of the signal sequence, the mature alpha-type gliadins may be divided into five different domains, two of which may have evolved from an ancestral gliadin gene, whereas the remaining three contain repeating sequences that may have developed independently.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=391560Documentos Relacionados
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