GPD1L: Plays a role in regulating cardiac sodium current; decreased enzymatic activity with resulting increased levels of glycerol 3-phosphate activating the DPD1L-dependent SCN5A phosphorylation pathway, may ultimately lead to decreased sodium current; cardiac sodium current may also be reduced due to alterations of NAD(H) balance induced by DPD1L. Defects in GPD1L are the cause of Brugada syndrome type 2 (BRGDA2). An autosomal dominant tachyarrhythmia characterized by right bundle branch block and ST segment elevation on an electrocardiogram (ECG). It can cause the ventricles to beat so fast that the blood is prevented from circulating efficiently in the body. When this situation occurs (called ventricular fibrillation), the individual will faint and may die in a few minutes if the heart is not reset. Defects in GPD1L are a cause of sudden infant death syndrome (SIDS). SIDS is the sudden death of an infant younger than 1 year that remains unexplained after a thorough case investigation, including performance of a complete autopsy, examination of the death scene, and review of clinical history. Pathophysiologic mechanisms for SIDS may include respiratory dysfunction, cardiac dysrhythmias, cardiorespiratory instability, and inborn errors of metabolism, but definitive pathogenic mechanisms precipitating an infant sudden death remain elusive. Belongs to the NAD-dependent glycerol-3-phosphate dehydrogenase family.
Protein type: Oxidoreductase; Lipid Metabolism - glycerophospholipid; EC 1.1.1.8
Chromosomal Location of Human Ortholog: 3p22.3
Cellular Component: glycerol-3-phosphate dehydrogenase complex; plasma membrane; cytosol
Molecular Function: glycerol-3-phosphate dehydrogenase (NAD+) activity; protein homodimerization activity; sodium channel regulator activity; NAD binding
Biological Process: NADH metabolic process; regulation of heart rate; NAD metabolic process; phospholipid metabolic process; carbohydrate metabolic process; glycerophospholipid biosynthetic process; negative regulation of peptidyl-serine phosphorylation; phosphatidic acid biosynthetic process; triacylglycerol biosynthetic process; cellular lipid metabolic process; glycerol-3-phosphate catabolic process
Disease: Brugada Syndrome 2
Show more