Progress in the Enzymology of the Mitochondrial Diseases of Lipoic Acid Requiring Enzymes.

ABSTRACT: Three human mitochondrial diseases that directly affect lipoic acid metabolism result from heterozygous missense and nonsense mutations in the LIAS, LIPT1, and LIPT2 genes. However, the functions of the proteins encoded by these genes in lipoic acid metabolism remained uncertain due to a lack of biochemical analysis at the enzyme level. An exception was the LIPT1 protein for which a perplexing property had been reported, a ligase lacking the ability to activate its substrate. This led to several models, some contradictory, to accommodate the role of LIPT1 protein activity in explaining the phenotypes of the afflicted neonatal patients. Recent evidence indicates that this LIPT1 protein activity is a misleading evolutionary artifact and that the physiological role of LIP

SUBMITTER: Cronan JE 

PROVIDER: S-EPMC7253636 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature