Consulta: creatorFacets:"Marinho-Carvalho,Monica M."
Registros recuperados: 1
Data/hora: 11/06/2024 06:39:00

Allosteric regulation of 6-phosphofructo-1-kinase activity of fat body and flight muscle from the bloodsucking bug Rhodnius prolixus
Provedor de dados: 42
Autores: Alves,Gutemberg G.; Marinho-Carvalho,Monica M.; Atella,Georgia C.; Silva-Neto,Mario A.C.; Sola-Penna,Mauro.
6-phosphofructo-1-kinase (phosphofructokinase; PFK) activity from Rhodnius prolixus, a haematophagous insect which is usually a poor flyer, was measured and compared in two metabolically active tissues - flight muscle and fat body. The activity of this important regulatory glycolytic enzyme was much more pronounced in muscle (15.1 ± 1.4 U/mg) than in fat body extracts (3.6±0.4 U/mg), although the latter presented higher levels of enzyme per protein content, as measured by western-blotting. Muscle extracts are more responsible than fat body to ATP and fructose 6-phosphate, both substrates of PFK. Allosteric regulation exerted by different effectors such as ADP, AMP and fructose 2,6-phosphate presented a singular pattern for each tissue. Optimal pH (8.0-8.5)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phosphofructokinase; Metabolism; Insect.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100008