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Explain how the pKa of an amino acid can differ depending on its chemical environment, either...
how does the protein environment surrounding an amino acid chain affect its chemical properties?Consider the carboxyl...
how does the protein environment surrounding an amino acid chain affect its chemical properties?Consider the carboxyl group on an asparate side chain in the following environments in a protein. Rank in order these environments from the highest to the lowest proportion of carboxyl groups in the -COO- form.that is in terms of pKas. 1. an aspartate side chain on the surface of protein with no other ionizable groups nearby. 2. an aspartate side chain buried in a hydrophobic pocket on...
STRUCTURE WILL VARY DEPENDING IF PKA IS LARGE OR SMALL, Draw a formula for Val-Ser-Gly (V-S-G) in its predominant ionic form at pH 7.3. You may assume for the purposes of this question that the pKa v...
STRUCTURE WILL VARY DEPENDING IF PKA IS LARGE OR SMALL,
Draw a formula for Val-Ser-Gly (V-S-G) in its predominant ionic form at pH 7.3. You may assume for the purposes of this question that the pKa values of the acidic groups of amino acid residues in the peptide are the same as in the amino acid itself. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your...
1. Amino acids are considered to be either hydrophobic or hydrophilic as described by the relative...
1. Amino acids are considered to be either hydrophobic or hydrophilic as described by the relative polarity of their side chain. Consider a folded protein in an aqueous environment; where would the hydrophobic amino acids likely be found? -Tucked away in the middle of the folded protein -Randomly distributed throughout the protein -Exposed on the exterior surface of the folded protein 2. All proteins exhibit a primary, secondary, and tertiary structure, but not all proteins exhibit a quaternary structure. Describe...
Understand alpha helices and beta pleated sheets Question How is it possible for the a-helix to have amino acids with b...
Understand alpha helices and beta pleated sheets Question How is it possible for the a-helix to have amino acids with bulky side chains while the B-pleated sheets cannot? Select the correct answer below: O The R groups in the a-helix stabilize the structure, while they interfere with the hydrogen bonds in a B-pleated sheet. The R groups are contained inside the a-helix structure, while they interfere with the hydrogen bonds in a B- pleated sheet. O The R groups lie...
Describe the chemical properties of amino acids and discuss how they can affect the final structu...
Describe the chemical properties of amino acids and discuss how they can affect the final structure of a folded protein. In your answer, give examples of amino acid substitutions that could cause changes to a protein’s structure and function
questions e-f and g.and k. a) Use the 3 letter symbols for a 6 amino acid...
questions e-f and g.and k.
a) Use the 3 letter symbols for a 6 amino acid peptide chain containing at least one polar and at least one acidic or basic amino acid. (All at physiological pH.) Asp - Gly-Glu-Tyr- Phe- Ala OM b) Draw the primary structure with its peptide bonds, side chains, etc. in the correct order. CH3 NH - E-N -CH. - CH - C- 2-I U=0 -ch- & N-chi- CH₃ CH ₂ Coo CH н My Coo...
1. what are some of the properties which make water a good environment for chemical reactions...
1. what are some of the properties which make water a good environment for chemical reactions ? 2. What is an acid? Base? What is considered acidic or basic or neutral? Which substance/ compound is neutral? Know the pH scale—what does it tell us, what is it based on (its relation to H+ ion concentration)? It ranges from 0 to 14. Know which points/numbers on the scale are acidic, which are basic, which is neutral. What is the difference in...
How many different mRNA sequences can code for a polypeptide chain with the amino acid sequence...
How many different mRNA sequences can code for a polypeptide chain with the amino acid sequence Met - Leu - Arg? Be sure to include a stop codon. Explain your answer! 5′ ...GGAGCUCGUUGUAUU... 3′ Is this sequence RNA or DNA? How can you tell? Which amino acids are encoded, if the reading frame is as shown, starting from the correct end? What would be the effect on the amino acid sequence if the sequence were changed to 5′ GGAGACUCGUUGUAUU 3′?...
With at least two reasons, explain how “acid mine drainage” can pollute the environment. please help!
With at least two reasons, explain how “acid mine drainage” can pollute the environment. please help!
B. Explain how two amino acid residues can form a peptide bond I was able to...
B. Explain how two amino acid residues can form a peptide bond I was able to get A) in this but I don't seem to understand this completely.
STRUCTURE WILL VARY DEPENDING IF PKA IS LARGE OR SMALL,
Draw a formula for Val-Ser-Gly (V-S-G) in its predominant ionic form at pH 7.3. You may assume for the purposes of this question that the pKa values of the acidic groups of amino acid residues in the peptide are the same as in the amino acid itself. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your...
Understand alpha helices and beta pleated sheets Question How is it possible for the a-helix to have amino acids with bulky side chains while the B-pleated sheets cannot? Select the correct answer below: O The R groups in the a-helix stabilize the structure, while they interfere with the hydrogen bonds in a B-pleated sheet. The R groups are contained inside the a-helix structure, while they interfere with the hydrogen bonds in a B- pleated sheet. O The R groups lie...
questions e-f and g.and k.
a) Use the 3 letter symbols for a 6 amino acid peptide chain containing at least one polar and at least one acidic or basic amino acid. (All at physiological pH.) Asp - Gly-Glu-Tyr- Phe- Ala OM b) Draw the primary structure with its peptide bonds, side chains, etc. in the correct order. CH3 NH - E-N -CH. - CH - C- 2-I U=0 -ch- & N-chi- CH₃ CH ₂ Coo CH н My Coo...
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