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 what a quaternary structure is, and why not all proteins exhibit this form of higher-order structure.
-A quaternary structure is the folding of the peptide backbone into a three-dimensional conformation. Not all proteins exhibit this type of structure because their backbone is rigid and thus cannot fold.
-A quaternary structure is the incorporation of two or more polypeptide subunits into one functional complex. Not all proteins exhibit a quaternary structure because not all proteins are comprised of two or more distinct subunits
- A quaternary structure is sequence of amino acids in the polypeptide chain. All proteins exhibit quaternary structure.
-A quaternary structure is the interaction of amino acid side chains. The statement is false- all proteins exhibit a quaternary structure.
Homework Answers
1. The Hydrophobic Amino Acids would be Tucked Away in the middle of the folded protein.
2. A quarternary structure is the incorporation of two or more polypeptide subunits into one functional Complex. Not all proteins exhibit a quarternary structure because not all Proteins are comprised of two or more distinct subunits.
Add Answer to:
1. Amino acids are considered to be either hydrophobic or
hydrophilic as described by the relative...
Water-soluble proteins, such as myoglobin, tend to fold such that hydrophilic and hydrophobic amino acid R...
Water-soluble proteins, such as myoglobin, tend to fold such that hydrophilic and hydrophobic amino acid R groups form hydrogen bonds with each other. hydrophobic amino acid R groups are on the interior of the protein and hydrophilic groups are on the outside. all peptides form hydrogen bonds with water. hydrophilic amino acid R groups are on the interior of the protein and hydrophobic groups are on the outside.
Pls answer fast Discuss how the properties of acidity, basicity, and polarity arise for some amino...
Pls answer fast
Discuss how the properties of acidity, basicity, and polarity arise for some amino acids. 8. How does water interact with hydrophobic and hydrophllic molecules? How does water interact with amino acid side chains, and how does this facilitate the folding of proteins? 9. Describe how amino acids are linked together to form protein chains. 10. What does the Ramachandran plot describe? How is it useful in describing protein structure? 11. What physical forces act on the amino...
3. The important function of molecular chaperones to A. move proteins from endoplasmic reticulum to the...
3. The important function of molecular chaperones to A. move proteins from endoplasmic reticulum to the Golgi apparatus B. fold proteins into a native conformation C. add cofactors, coenzymes or prosthetic groups to proteins as they are synthesized D. assemble protein subunits into a quaternary structure E. transport proteins to either the plasma membrane or release them from cells to the extracellular space 4. Protein folding to a native conformation is highly dependent upon all of the following, except: A....
1. Which of the following statements is consistent with the structural motifs in 1OPF? This protein...
1. Which of the following statements is consistent with the
structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a
large parallel beta barrel.
This protein has quaternary structure, where each subunit is a
large antiparallel beta barrel.
This protein has tertiary structure, where each subunit is a
large antiparallel beta barrel.
This protein has quaternary structure, where each subunit is a
large parallel beta barrel.
3. Given the information in the PDB entry for 1OPF,...
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...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and collagen. c)are usually water soluble. d)aggregate in aqueous media. e)are often made of β-pleated sheet and α-helix sections wrapped into compact structures. 2) Select all that apply. The Bohr effect: a)depends on the atomic orbital structure of hydrogen. b)can be summarized as a reduction in the oxygen affinity of hemoglobin with decreasing pH. c)is explained by the protonation of key amino acids, including the...
please answer 8. Quaternary structure: The image below is of a polypeptide in quaternary (4°) structure...
please answer
8. Quaternary structure: The image below is of a polypeptide in quaternary (4°) structure level of protein folding. The image to the left is of hemoglobin. It is composed of four separate polypeptide chains indicated by the color differences. The image on the right indicates the backbone items as a ribbon (or line), while the side chains are chemically drawn. a. Name the specific bond/interaction indicated by the: i. Letter A ii. Letter B iii. Letter C iv....
19. The _structure of a protein refers to the linear sequence of amino acids in that...
19. The _structure of a protein refers to the linear sequence of amino acids in that protein. 20. Make up an example of the primary structure of a protein in the space below 21. The structure of a protein refers to a regular, recurring arrangement of the amino acid chain. One such arrangement, called the occurs when the amino acid chain forms a spiral or coil. Draw an example of this structure in the space below. 22. Another type of_...
The _______ of amino acids in a protein is referred to as its primary structure
24. The _______ of amino acids in a protein is referred to as its primary structure. A) twisting B) sequencing C) folding D) none of these 25. The structure of a protein is most important because the _______ of the amino acids determines its overall shape, function and properties. A) primary, twisting B) primary, sequencing C) secondary, twisting D) secondary, folding E) none of these 26. The secondary structure of a protein is due to_______ between amino acid residues. A) hydrophobic interactions B) hydrogen bonding...
6) Proteins are composed of amino acids polymerized into long chains. The structure of a protein...
6) Proteins are composed of amino acids polymerized into long chains. The structure of a protein - that is, its overall shape and how the chains are "folded” around each other - is very important for its function. In an aqueous environment, in an active, folded state the hydrophilic amino acids in the protein are facing outwards exposed to the water and the hydrophobic amino acids are hidden away from the water in the core of the protein. In a...
Water-soluble proteins, such as myoglobin, tend to fold such that hydrophilic and hydrophobic amino acid R groups form hydrogen bonds with each other. hydrophobic amino acid R groups are on the interior of the protein and hydrophilic groups are on the outside. all peptides form hydrogen bonds with water. hydrophilic amino acid R groups are on the interior of the protein and hydrophobic groups are on the outside.
Pls answer fast
Discuss how the properties of acidity, basicity, and polarity arise for some amino acids. 8. How does water interact with hydrophobic and hydrophllic molecules? How does water interact with amino acid side chains, and how does this facilitate the folding of proteins? 9. Describe how amino acids are linked together to form protein chains. 10. What does the Ramachandran plot describe? How is it useful in describing protein structure? 11. What physical forces act on the amino...
3. The important function of molecular chaperones to A. move proteins from endoplasmic reticulum to the Golgi apparatus B. fold proteins into a native conformation C. add cofactors, coenzymes or prosthetic groups to proteins as they are synthesized D. assemble protein subunits into a quaternary structure E. transport proteins to either the plasma membrane or release them from cells to the extracellular space 4. Protein folding to a native conformation is highly dependent upon all of the following, except: A....
1. Which of the following statements is consistent with the
structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a
large parallel beta barrel.
This protein has quaternary structure, where each subunit is a
large antiparallel beta barrel.
This protein has tertiary structure, where each subunit is a
large antiparallel beta barrel.
This protein has quaternary structure, where each subunit is a
large parallel beta barrel.
3. Given the information in the PDB entry for 1OPF,...
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...
please answer
8. Quaternary structure: The image below is of a polypeptide in quaternary (4°) structure level of protein folding. The image to the left is of hemoglobin. It is composed of four separate polypeptide chains indicated by the color differences. The image on the right indicates the backbone items as a ribbon (or line), while the side chains are chemically drawn. a. Name the specific bond/interaction indicated by the: i. Letter A ii. Letter B iii. Letter C iv....
19. The _structure of a protein refers to the linear sequence of amino acids in that protein. 20. Make up an example of the primary structure of a protein in the space below 21. The structure of a protein refers to a regular, recurring arrangement of the amino acid chain. One such arrangement, called the occurs when the amino acid chain forms a spiral or coil. Draw an example of this structure in the space below. 22. Another type of_...
6) Proteins are composed of amino acids polymerized into long chains. The structure of a protein - that is, its overall shape and how the chains are "folded” around each other - is very important for its function. In an aqueous environment, in an active, folded state the hydrophilic amino acids in the protein are facing outwards exposed to the water and the hydrophobic amino acids are hidden away from the water in the core of the protein. In a...
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