in substrate level ATP synthesis in glycolysis.. why is GTP used as an intermediate for ATP synthesis( succinyl-CoA to succinic acid)
Glycolysis is the process by which glucose is broken down into energy in the form of ATP. It occurs in the cytoplasm of plant cells and is the first step in cellular respiration.
During glycolysis, a molecule of GTP is produced as a byproduct. This GTP is then used to produce ATP through a process called substrate-level phosphorylation.
GTP is used instead of ATP in glycolysis because it is more efficient. The enzyme responsible for producing GTP, phosphoglycerate kinase, has a higher affinity for GTP than ATP, allowing for a higher rate of ATP production.
Yes, in addition to GTP during glycolysis, plants can also produce ATP through the breakdown of other molecules such as succinyl-CoA in the citric acid cycle.
Glycolysis is regulated by various enzymes and molecules in the cell. One important regulator is ATP itself, as high levels of ATP can inhibit enzymes involved in glycolysis, while low levels can activate them. Additionally, hormones and other signaling molecules can also affect the rate of glycolysis in plants.