What is GAPDH What are the main function and structure of GAPDH?
acetylation of GAPDH (K254) is reversibly regulated by the acetyltransferase PCAF and the deacetylase HDAC5. GAPDH binds to active Akt, leading to Bcl-xL increase and escape from caspase-independent cell death. GAPDH is a moonlighting protein that functions as a glycolytic enzyme as well as a uracil DNA glycosylase.
What substrate does GAPDH act?
GADPH is dependent on NAD+ cofactor, which acts as an electron acceptor, and inorganic phosphate (11). GADPH also contains two sulfate molecules per subunit. These sulfates represent the substrate phosphate (Ps) and inorganic phosphate (Pi), which are involved in catalysis (16).
What is the role of GAPDH in glycolysis?
The key function of GAPDH is attributed to glycolysis, which means that the active tetrameric molecule catalyzes the conversion of glyceraldehyde-3-phosphate to 1,3-bisphospho-d-glycerate [80]. Chemical modifications and denaturation of GAPDH can slow down the glycolytic cycle and disrupt the cellular metabolism [81].
Is GAPDH an antibody?
This GAPDH antibody can be used as a loading control antibody. GAPDH is a 146 kDa tetramer composed of four 30-40 kDa subunits. There is no cross-reaction with GAPDH from yeast.
Why is the GAPDH gene important?
The central role of GAPDH in the glycolytic pathway allows it to function as a sensor of cellular stress and respond by activating downstream pathways. In fact the diverse functions of GAPDH all seem to regulate homeostasis at various levels or locations.
What class of enzyme is GAPDH?
Glyceraldehyde 3-phosphate dehydrogenase (abbreviated GAPDH) (EC 1.2. 1.12) is an enzyme of about 37kDa that catalyzes the sixth step of glycolysis and thus serves to break down glucose for energy and carbon molecules….Glyceraldehyde 3-phosphate dehydrogenase.
| GAPDH | ||
|---|---|---|
| Ensembl | ENSG00000111640 | n/a |
| UniProt | P04406 | P16858 |
Is GAPDH a kinase?
The membrane-attached GAPDH is thus a dual-purpose enzyme, a glycolytic dehydrogenase, and a receptor-associated kinase.
What type of enzyme is GAPDH?
Glyceraldehyde 3-phosphate dehydrogenase (abbreviated GAPDH) (EC 1.2. 1.12) is an enzyme of about 37kDa that catalyzes the sixth step of glycolysis and thus serves to break down glucose for energy and carbon molecules.
Why GAPDH is used as control in PCR?
As one of the most common reference genes, GAPDH is often used to normalize the gene expression data, being used as an endogenous control in the quantitative analysis of RT-PCR, since in some experimental systems, its expression is very constant (Edwards and Denhardt 1985; Winer et al. 1999).
Where is GAPDH gene found?
In addition to the cytoplasm where majority of GAPDH is located under the basal condition, GAPDH is also found in the particulate fractions, such as the nucleus, the mitochondria, and the small vesicular fractions. When cells are exposed to various stressors, dynamic subcellular re-distribution of GAPDH occurs.