Draw the ionization states for Lys and include how many ionizable protons are there. Given that amino group pKa = 9.0 and pKa of carboxylic group is 2.2. Please also include location of Zwitterion on titration curvealong with the pI calculation.
In: Chemistry
A DNA sequence is. TACACCTTGGCGACGACT
WHAT IS m RNA sequence is _______________________________
mutated sequence is TACACCTTGGGACGACT
what is mRNA mutated. ____________________________________
What kind of mutation is this and what would be the result in terms of the amino acid sequence? (hint... use chart in notes
In: Biology
Which of the following located in the active site of the enzyme chymotrypsin participates in acid-base chemistry?
The side chain oxygen of serine
The amide group of glycine
The hydrophobic pocket Histidine
The amide group of serine
In: Chemistry
what is the substrate in Urease test? what is the enzyme in urease test? what is the pH indicator in the urease test? what is the end products in the urease test? what genera is the urease test helpful in identifying?
In: Biology
In: Chemistry
The simple Michaelis-Menten model applies only to the initial velocity of an enzyme-catalyzed reaction, that is, to the velocity when no appreciable amount of product has accumulated. What feature of the model is consistent with this constraint? Explain.
In: Chemistry
1.) Describe the steps of aminoacyl-tRNA charging. What enzyme catalyzes all of these reactions?
2.) Describe how translation is regulated by phosphorylation of eIF2α.
3.) Define an operon. Why are they advantageous for bacteria?
In: Biology
which of the following is true of PCR?
a. the enzyme used denatures at 45 degrees celsius
b. it requires primers that bind to the target DNA
c. it synthesizes RNA molecules
d. all options are true.
In: Biology
Which of the following is a mechanism by which cells ensure a strong response to a small amount of ligand?
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Receptor-mediated endocytosis |
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GTP hydrolysis by G-proteins |
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Enzyme cascades |
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2nd messengers |
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All of the above |
In: Biology
Levels of Protein Structure
Enzymes are_____________________ functioning as ________________________. If digested by something like typsin (a digestive enzyme!), their ______________________structure is lost. If denatured, they will also lose activity, so ____________________, ______________________, and ___________________ structure is also important for proper functioning.
In: Chemistry