In the first step of glycolysis, the glucose ring is phosphorylated. Phosphorylation isthe process of adding a phosphate group to a molecule derived from ATP. ... The reaction occurs with the help of the enzyme hexokinase, an enzyme that catalyzes the phosphorylation of many six-membered glucose...
What happens to a molecule when it is phosphorylated? phosphorylation, chemical process in which a phosphate groupis added to an organic molecule. ... The energy released during metabolic or photosynthetic processes is captured in the energy-rich phosphate bonds of certain molecules, most commonly i...
the amino acid is serine, although phosphorylation also occurs on threonine and tyrosine in eukaryotes and histidine in prokaryotes. This is an esterification reaction where a phosphate group reacts with the hydroxyl (-OH) group of a serine, threonine, or tyrosine side chain. The enzyme protein...
What is the process of digestion, absorption, and metabolism? Why is it so important to understand the processes of each? What is the role of enzyme assemblies in metabolism? How are carbohydrates digested and absorbed in the body? How do proteins become dephosphorylated?
ATP is a produced in the what and used how within the cell? 1. mitochondria; used as an energy molecule 2. endoplasmic reticulum; transport molecules 3. golgi apparatus; synthesizes carbohydrates chains 4. mitochondria; as a digestive enzyme 5. nucleus; t ...
Consequently, drugs are being developed and tested that block the kinase enzyme and activate the phosphatase enzyme[7], which is exactly what the homocysteine-lowering B vitamins do. But, so far, there are no human clinical drug trials reporting significant benefit. On the other hand, trials gi...
Phosphorylation of light-activated rhodopsin by the retina-specific enzyme, rhodopsin kinase (RK), is the primary event in the initiation of desensitization in the visual system. RK binds to the cytoplasmic face of rhodopsin, and the binding results in activation of the enzyme which th...
This direction of budding is away from the cytosol (opposite to the regular budding of transport vesicles) and a different molecular machinery has been found to be responsible. P-type ATPase One of a family of membrane-embedded transporters that share a phosphorylated intermediate as part of ...
How is serine phosphorylated? Diagram of serine phosphorylation. Enzyme-catalyzed proton transfer from the (–OH)group on serine stimulates the nucleophilic attack of the γ-phosphate group on ATP, resulting in transfer of the phosphate group to serine to form phosphoserine and ADP. ...
In enzyme activity, both co-enzymes and co-factors are greatly involved. Briefly explain the difference between the two and state the functions of each. Why does phosphorylation change the activity of proteins and what happens to the pro...