Dissecting ITC data of metal ions binding to ligands and proteins.
Biochim Biophys Acta
; 1860(5): 892-901, 2016 May.
Article
en En
| MEDLINE
| ID: mdl-26327285
ABSTRACT
BACKGROUND:
ITC is a powerful technique that can reliably assess the thermodynamic underpinnings of a wide range of binding events. When metal ions are involved, complications arise in evaluating the data due to unavoidable solution chemistry that includes metal speciation and a variety of linked equilibria. SCOPE OF REVIEW This paper identifies these concerns, provides recommendations to avoid common mistakes, and guides the reader through the mathematical treatment of ITC data to arrive at a set of thermodynamic state functions that describe identical chemical events and, ideally, are independent of solution conditions. Further, common metal chromophores used in biological metal sensing studies are proposed as a robust system to determine unknown solution competition. MAJORCONCLUSIONS:
Metal ions present several complications in ITC experiments. This review presents strategies to avoid these pitfalls and proposes and experimentally validates mathematical approaches to deconvolute complex equilibria that exist in these systems. GENERALSIGNIFICANCE:
This review discusses the wide range of complications that exists in metal-based ITC experiments. It provides a starting point for scientists new to this field and articulates concerns that will help experienced researchers troubleshoot experiments.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Proteínas
/
Fura-2
/
Ácido Edético
/
Aminoquinolinas
/
Metales Alcalinotérreos
Tipo de estudio:
Guideline
Límite:
Humans
Idioma:
En
Revista:
Biochim Biophys Acta
Año:
2016
Tipo del documento:
Article
País de afiliación:
Estados Unidos