Patterns of molecular evolution in pathogenesis-related proteins
Genet. mol. biol
;
28(4): 645-653, Dec. 2005. tab
Artículo
en Inglés
| LILACS
| ID: lil-450987
ABSTRACT
The genes encoding 13 classes of pathogenesis-related (PR) proteins were examined for positive selection using maximum-likelihood (ML) models of codon substitution. The study involved 194 sequences from 54 species belonging to 37 genera. Although the sizes of the sequences examined varied from 237 bp for PR12 to 1,110 bp for PR7, most classes (9 out of 13) contained sequences made up of more than 400 nucleotides. Signs of positive selection were obtained for sites in PR proteins 4, 6, 8, 9 and 15 using an ML-based Bayesian method and likelihood ratio tests. These results confirm the importance of positive selection in proteins related to defense mechanisms already observed in a wide array of organisms
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Proteínas de Plantas
/
Evolución Molecular
Tipo de estudio:
Estudio de etiología
Idioma:
Inglés
Revista:
Genet. mol. biol
Asunto de la revista:
Genética
Año:
2005
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Pontifícia Universidade Católica do Rio Grande do Sul/BR
/
Universidade Federal do Rio Grande do Sul/BR
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