Role of the glycosyl transferase is to recognize mosfolded glycoprotein and transfer a glucose monomer to terminal mannose,on the glycoprotein.UDP glucose act as glucosyl donor.
if glucosyl transferase interacts with anyprotein regardless of folded and misfolded ,both folded and misfolded protein is monoglucosylated by glucosyl transferase.folded protein also enter in to the cycle of calnexin and calreticulin folding pathway.both protein remain in ER lumen.
B. Glucosyl transferase is an important enzyme in the calnexin protein folding process. What would happen...
Protein Folding - a) what is the molten globule? b) How does the activity of chaperones in unfolding molten globules may enhance the overall rate of folding to the native state? c) Name a protein folding disease. d) Give two possible general causes for disease arising from protein folding defects.
For a protein such as ribonuclease, for the process of protein folding under native (non-denaturing) conditions, Punfolded → Pfolded Select the appropriate description for each of the thermodynamic parameters (for the folding reaction as shown above, from left to right): What is the value of ∆G? What is the value of ∆Sconformational? The value of ∆S hydrophobic? The choices for each question A. positive, favorable for folding B. positive, unfavorable for folding C. negative, favorable for folding D. negative, unfavorable...
this is a very simplistic approach to protein folding
which ignores solvent and volume affect but it allows us to
practice what we have learned about thermodynamics and kinetics.
enzymes are long chains of amino acids that have to fold in the
proper way so as to exhibit enzyme activity. They can get lice or
dandruff reactions. Let us pick an enzyme that is produced in the
human body at 37 degrees Celsius. We will call it enzyme X. Human...
Predict what would happen to the secondary structure of a protein if an alcohol that disrupts hydrogen bonding were added. Choose one or more answer (if applied): A. Nothing would happen to the protein; hydrogen bonding is not important for secondary structure B. The beta sheets would unfold, disrupting protein structure C. The a helixes would unfold, disrupting protein structure D. Individual amino acids would be hydrolyzed from the protein, disrupting protein structure
a) What aspects of protein structure and folding are explained
by entropy? How does entropy
affect a protein’s native versus denatured structure?
b) What aspects of protein structure and folding are explained
by enthalpy? How does enthalpy
affect a protein’s native versus denatured structure?
c) What aspects of protein structure and folding are
illustrative of equilibrium (or disequilibrium)?
1. The figure below shows the physical representation of a native protein versus a denatured protein 72 native state A-state 23 17...
a)b)
topoisomerase IT As the replication fork continues to open, what will happen to the protein labeled “C”? Is this the same in prokaryotes and eukaryotes? Briefly explain what would happen if the protein RPA did not come in to perform its function in regards to primers. How will protein C be impacted as a result and why? Is this the same in prokaryotes and eukaryotes?
3. Indicate the (major) class of enzym major class of enzyme that would be required to catalyze each of the following reactions. The options include: oxidoreductase, isomerase, transferase, hydrolase, lyase, and ligase. . - 4. Consider the following 31 residue polypeptide N-Terminal 9000 C-Terminal a. Predict how the following denaturants will affect the folded structure of this polypeptide. What specific regions (or attractive forces/covalent linkages) will be affected by each of these reagents? Use the residue numbers to locate particular...
What would happen if the enzyme was non-functional for Polymerase, I Polymerase III, Ligase, Helicase and Okazaki Explain please
3. Discuss the polarity of the lipid bilayer. 4. Explain how protein folding is related to intermolecular forces. 5. Caffeine is a stimulant contained in coffee. Use what you know about polarity to come up with a plan to extract caffeine from coffee. Write down any reagents that you would use.
What would happen to the expression of this gene if this cell
did not have any GAL4 protein and why?
What would happen to the expression of this gene if this cell
did not have any GAL80 protein and why?
What would happen to the expression of this gene if this cell
did not have any GAL3 protein and why?
Understanding regulation of transcription in eukaryotes. The images below depict how the expression of a gene required to break down...