Temperature studies of glyceraldehyde-3-phosphate dehydrogenase binding to liposomes using fluorescence technique

Autor:	Krystyna Michalak, Gutowicz, J., Modrzycka, T.
Rok vydání:	1992
Předmět:	Spectrometry Fluorescence Protein Conformation Muscles Liposomes Temperature Tryptophan Animals Glyceraldehyde-3-Phosphate Dehydrogenases Rabbits In Vitro Techniques Phosphatidylinositols Fluorescent Dyes
Zdroj:	Europe PubMed Central Scopus-Elsevier
ISSN:	0231-5882
Popis:	Interaction of rabbit muscle glyceraldehyde-3-phosphate dehydrogenase with negatively charged liposomes was investigated as a function of temperature. This interaction affects the temperature-dependent conformational transition in the enzyme and exerts stabilizing effect on the protein structure. It can be seen from the fluorescence quenching experiments that the accessibility of tryptophanyl residues and isoindol probe fluorophores (covalently bound with the protein amino groups) for a dynamic quencher, acrylamide, is altered upon binding. This accessibility represented by effective quenching constant (Keff) strongly depends on temperature for unmodified enzyme and for the enzyme adsorbed on liposomes, it is nearly constant over a wide range of temperatures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::6b3f7247bf45ddb1a1762a7875e2c132 https://pubmed.ncbi.nlm.nih.gov/1292953 Zobrazit plný text záznamu