List four amino acid side group interactions that stabilize tertiary structures of proteins. In each case,...
List four amino acid side group interactions that stabilize tertiary structures of proteins. In each case, identify a pair of amino acids with side groups that could participate in such interactions
Homework Answers
1) Hydrogen bond- OH side group of serine can form hydrogen bonds that can stabilise the tertiary structure.
2) Sulfur bridge- It can be seen between 2 cysteine side groups.
3) Ionic bond - The hydrogen atom from amino acid aspartic acid COOH group can be transferred to alanine -NH2 group you form Zwitter ions. This stabilises the tertiary structure of amino acids.
4) vander weals dispersion force- This can be seen between the hydrocarbon groups of leucine.
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List four amino acid side group interactions that stabilize
tertiary structures of proteins. In each case,...
Describe the four categories of amino acid side chains. What types of interactions are the members...
Describe the four categories of amino acid side chains. What types of interactions are the members of each of these categories likely to make? Now describe and explain the four levels of protein structure, giving a specific example of each an how amino acids are involved.
Biochemistry 1: Two amino acids have chiral carbons in their side chains (R group). Identify these...
Biochemistry 1: Two amino acids have chiral carbons in their side chains (R group). Identify these amino acids and draw the structures of all of the possible stereoisomers of these amino acids. The amino acid with a hydroxyl group is found in proteins with the (2S, 3R) configuration and the other amino acid is found in proteins with the (2S, 3S) configuration. Circle the structures in your answer above that correspond to these isomers.
4. Which amino acid could form ionic interactions? Explain how you know.
4. Which amino acid could form ionic interactions? Explain how
you know.
1. Circle the funct tional groups on the R-group of the AMINO ACIDs below that are capable of forming hydrogen bonds. How do you know? 2 4 CH H,C CH, 2. List at least 2 amino acids (numbered 1-10 above) capable of interacting with water 5 and 7 3. List at least 2 amino acids that water would avoid interacting with. Explain how you know. I and 2...
THIS IS BIOCHEMISTRY A peptide has a low pI value. Which of the following amino acids...
THIS IS BIOCHEMISTRY A peptide has a low pI value. Which of the following amino acids are likely to be present? Glycine Serine Valine Aspartic aci Arginine The R-groups of which of the following pairs of amino acids could participate in the formation of salt bridge electrostatic interaction? Alanine and valine Valine and lysine Lysine and glutamate Serine and isoleucine Asparagine and glutamine Which of the following interactions does NOT contribute to stabilizing tertiary structure? Hydrophobic interactions Electrostatic interations...
1. Describe the types of interactions that keep complex structures of proteins intact and explain AT...
1. Describe the types of interactions that keep complex structures of proteins intact and explain AT LEAST two of the general rules governing tertiary folding in terms of amino acid distribution and polypeptide chain trends/structure.
29. All of the following are non-covalent interactions important in maintaining the secondary. tertiary, and quaternary aspects of amino acids except
29. All of the following are non-covalent interactions important in maintaining the secondary. tertiary, and quaternary aspects of amino acids except A) salt bridges between R groups. B) hydrogen bonding between R groups. C) hydrogen bonding along the backbone. D) sulfur-sulfur bonds. E) hydrophobic interactions between R groups. 30. A hemiacetal consists of a A) carbon atom bonded to both an -OH and an-OR group B) carbonyl group that is also bonded to a hydroxyl group. C) carbon atom bonded to two-OH groups....
Problem 3 Side Chains in Tertiary Structure Predict whether each of the following amino acid side...
Problem 3 Side Chains in Tertiary Structure Predict whether each of the following amino acid side chains would more likely be on the surface or in the interior of a protein after it has folded into ts tertiary structure a. tyrosine b. a. tyro sine b.leucine
Lecture 3 Identify amino-/carboxy termini, and R-group on amino acid What is chirality? Identify a carbon...
Lecture 3 Identify amino-/carboxy termini, and R-group on amino acid What is chirality? Identify a carbon that is chiral (i.e., has 4 different groups attached) Chiral compounds rotate plane polarized light Memorize amino acid 1) structure, 2) classification (hydrophobic, aliphatic, aromatic, negatively charged, positively charged, polar uncharged) Be able to draw glycine (the generic amino acid) Given an amino acid structure and pKas of ionizable groups, be able to determine the charge at pH 1, pH 14, and pH 7...
.Below is the generic formula for an amino acid, one of the building blocks for proteins....
.Below is the generic formula for an amino acid, one of the building blocks for proteins. 'R' stands for a variable functional group which is different in each type of amino acid. The rest of the molecule's structure is common to all of the amino acids. R Ι 0 - Ι OH I 1. Identify one place where an amino acid has a non-polar covalent bond 2. Identify one place where amino acids have a polar covalent bond Do you...
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysi...
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysine B) It is polar C) Forms disulfide bond/ cysteine D) Forms hydrogen bonds with neighbors/ alanine serine 27. All amino acids found in proteins are L-amino acids EXCEPT the achiral. A) glutamate B) Lysine C) glyeine D) Alamine 28. The plH at which the positive and negative charges of an amino acid balance each ofher is called the A) isotonic...
4. Which amino acid could form ionic interactions? Explain how
you know.
1. Circle the funct tional groups on the R-group of the AMINO ACIDs below that are capable of forming hydrogen bonds. How do you know? 2 4 CH H,C CH, 2. List at least 2 amino acids (numbered 1-10 above) capable of interacting with water 5 and 7 3. List at least 2 amino acids that water would avoid interacting with. Explain how you know. I and 2...
Problem 3 Side Chains in Tertiary Structure Predict whether each of the following amino acid side chains would more likely be on the surface or in the interior of a protein after it has folded into ts tertiary structure a. tyrosine b. a. tyro sine b.leucine
Lecture 3 Identify amino-/carboxy termini, and R-group on amino acid What is chirality? Identify a carbon that is chiral (i.e., has 4 different groups attached) Chiral compounds rotate plane polarized light Memorize amino acid 1) structure, 2) classification (hydrophobic, aliphatic, aromatic, negatively charged, positively charged, polar uncharged) Be able to draw glycine (the generic amino acid) Given an amino acid structure and pKas of ionizable groups, be able to determine the charge at pH 1, pH 14, and pH 7...
.Below is the generic formula for an amino acid, one of the building blocks for proteins. 'R' stands for a variable functional group which is different in each type of amino acid. The rest of the molecule's structure is common to all of the amino acids. R Ι 0 - Ι OH I 1. Identify one place where an amino acid has a non-polar covalent bond 2. Identify one place where amino acids have a polar covalent bond Do you...
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysine B) It is polar C) Forms disulfide bond/ cysteine D) Forms hydrogen bonds with neighbors/ alanine serine 27. All amino acids found in proteins are L-amino acids EXCEPT the achiral. A) glutamate B) Lysine C) glyeine D) Alamine 28. The plH at which the positive and negative charges of an amino acid balance each ofher is called the A) isotonic...
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