An alpha D-globin fragment from Triatoma infestans hindgut stimulates Trypanosoma cruzi adenylyl cyclase and promotes metacyclogenesis
Biol. Res
; 26(1/2): 279-83, 1993. tab
Article
em En
| LILACS
| ID: lil-228627
Biblioteca responsável:
BR1.1
ABSTRACT
A peptide from hindguts of the Triatoma infestans, the hematophagous Chagas' insect vector, activates adenylyl cyclase activity in Trypanosoma cruzi epimastigote membranes and stimulates the in vitro differentiation of epimastigotes (proliferative and non-infectious forms) to metacyclic trypomastigotes (non-proliferative and infectious forms). The peptide was purified from hindguts of insects fed two days before with chicken blood. After purification, the peptide showed upon SDS-PAGE a single band of about 10 kDa. The sequence for 20 residues of the amino terminus of this peptide was H2N-Met-Leu-Thr-Ala-Glu-Asp-Lys-Lys-Leu-Ile-Gln-Gln-Ala-Trp-Glu-Lys-Ala- Ala-Ser-His. This sequence corresponds to the amino terminus of chicken alpha D-globin. A synthetic peptide with the sequence of the 40 amino acids corresponding to the amino terminus of alpha D-globin, also stimulated T. cruzi adenylyl cyclase activity and promoted metacyclogenesis
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Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Fragmentos de Peptídeos
/
Triatoma
/
Trypanosoma cruzi
/
Globinas
/
Adenilil Ciclases
Limite:
Animals
Idioma:
En
Revista:
Biol. Res
Assunto da revista:
BIOLOGIA
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Chile