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Usage

Uses

Used in Enzyme Activity Assays:
Glyceraldehyde-3-phosphate Dehydrogenase is used as a biocatalyst for measurements of GAPDH activity assay, which is crucial for understanding the enzyme's function and its role in various metabolic processes.
Used in Analytical Techniques:
GAPDH is employed as a standard enzyme to generate a linear standard curve, allowing researchers to analyze GAPDH activity in experimental samples collected from different sources, such as mice.
Used in Anti-aggregation Assays:
Glyceraldehyde-3-phosphate Dehydrogenase is used as a test subject in anti-aggregation assays, which help in studying the enzyme's stability and its ability to resist aggregation under various conditions.
Used in Purified GAPDH Studies:
In purified GAPDH studies, the enzyme is used to investigate its structure, function, and interactions with other molecules, providing valuable insights into its role in cellular metabolism and potential applications in biotechnology and medicine.
Used in Pharmaceutical Industry:
Glyceraldehyde-3-phosphate Dehydrogenase is used as a target enzyme for the development of drugs that modulate its activity, which can have therapeutic benefits in treating various diseases related to metabolic disorders.
Used in Biotechnology Industry:
GAPDH is employed as a model enzyme in biotechnological applications, such as enzyme engineering and directed evolution, to improve its properties and develop novel biocatalysts for industrial processes.
Used in Research and Development:
Glyceraldehyde-3-phosphate Dehydrogenase is used as a research tool in various scientific studies, including molecular biology, biochemistry, and cell biology, to explore the fundamental aspects of cellular metabolism and enzyme function.

Biochem/physiol Actions

Glyceraldehyde-3-phosphate dehydrogenase catalyzes the conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate as part of glycolysis. It has also been shown to have roles in initiation of apoptosis, transcription activation and the shuttling of ER to Golgi vesicles<<<,New>>>.

Purification Methods

Purify the dehydrogenase from rabbit muscle by extraction with 0.03N KOH and precipitate it with (NH4)2SO4 (0.52 of saturation). The clear supernatant is adjusted to pH 7.5, and NH3 is added dropwise to pH 8.2-8.4. Crystals appear sometimes even without seeding. The crystals are dissolved in H2O, filtered to remove suspended material and 2 volumes of saturated (NH4)2SO4 at pH 8.2-8.4 is added. After 1hour the crystals appear. Recrystallise it in the same way. [Cori et al. J Biol Chem 173 605 1948, Furfine & Velick J Biol Chem 240 844 1965, The Enzymes 7 243 1963, Lui & Huskey Biochemistry 31 6998 1992.] The Km values are: NADH (3.3WM) and 1,3-diphosphoglycerate (8x10-7M) in pH 7.4 imidazole buffer at 26o, NAD (13WM), glyceraldehyde-3-P (90WM), Pi (2.9x10-4M), and arsenate (69WM) in 8.6 M NaHCO3 buffer at 26oC. [Orsi & Cleland Biochemistry 11 102 1972.]