Methods for characterizing disease-associated ATP-sensitive potassium channel mutations

Balamurugan Kandasamy, Show Ling Shyng

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations


The ATP-sensitive potassium (KATP) channel formed by the inwardly rectifying potassium channel Kir6.2 and the sulfonylurea receptor 1 (SUR1) plays a key role in regulating insulin secretion. Genetic mutations in KCNJ11 or ABCC8 which encode Kir6.2 and SUR1 respectively are major causes of insulin secretion disorders: those causing loss of channel function lead to congenital hyperinsulinism, whereas those causing gain of channel function result in neonatal diabetes and in some cases developmental delay, epilepsy, and neonatal diabetes, referred to as the DEND syndrome. Understanding how disease mutations disrupt channel expression and function is important for disease diagnosis and for devising effective therapeutic strategies. Here, we describe a workflow including several biochemical and functional assays to assess the effects of mutations on channel expression and function.

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Number of pages20
StatePublished - 2018

Publication series

NameMethods in Molecular Biology
ISSN (Print)1064-3745


  • Channelopathy
  • Congenital hyperinsulinism
  • DEND syndrome
  • Inwardly rectifying potassium channel Kir6.2
  • K channel
  • Neonatal diabetes
  • Sulfonylurea receptor 1

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics


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