Recombinant Human PDHB protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

PDHB also known as pyruvate dehydrogenase beta subunit plays an important role in the conversion of pyruvate to acetyl-CoA. This protein forms a part of the pyruvate dehydrogenase complex (PDC) which occurs in mitochondria of numerous tissues. The PDHB subunit has a molecular mass of approximately 39 kDa. Expression of PDHB is not limited to one specific type of tissue it is generally found in various tissues indicating its widespread involvement in cellular metabolism.

Biological function summary

PDHB functions as an essential component of the PDC which catalyzes the decarboxylation of pyruvate linking glycolysis to the citric acid cycle. The PDC itself is a large multi-enzyme complex including other subunits such as E1 and E2 which coordinate efficiently to carry out its function. In this way PDHB contributes to energy production by enabling entry of carbon skeletons into the tricarboxylic acid cycle important for ATP generation.

Pathways

PDHB holds a significant role in central metabolic pathways namely glycolysis and the citric acid cycle. The conversion facilitated by the PDC forms a vital cornerstone for metabolic flux regulation influencing gluconeogenesis and fatty acid synthesis. PDHB also interacts with proteins such as pyruvate dehydrogenase kinase which regulates the PDC activity by phosphorylation thereby affecting energy metabolism directly.

Alterations in PDHB can lead to metabolic disorders such as pyruvate dehydrogenase deficiency potentially causing neurological dysfunction due to impaired energy metabolism. PDHB mutations also have a link to mitochondrial diseases reflecting its significant role in energy homeostasis. In these contexts proteins like the pyruvate dehydrogenase phosphatase are involved highlighting the clinical relevance of PDHB alterations in maintaining proper metabolic health.