Which of the following amino acids may alter the direction of a polypeptide chain and cause...
Which of the following amino acids may alter the direction of a polypeptide chain and cause a section of this chain to bend?
Homework Answers
Answer:
Proline
Explanation:
Proline is a unique amino acid, It is the only amino acid present
wher ethe side chain is connected to the protein backbone twice
that forms a five membered nitrogen containing ring. Proline due to
this feature is unable to occupy main chain conformations that can
be easily adopted by other amino acids and so, proine is found at
very tight junctions in the structure of the protein , that is
where the polypeptide chain changes it's directionso we say proline
can alter the direction.
Add Answer to:
Which of the following amino acids may alter the direction of a
polypeptide chain and cause...
QUESTION 24 Which of the following amino acids does not contain an aromatic R-group? O A)...
QUESTION 24 Which of the following amino acids does not contain an aromatic R-group? O A) tyrosine B) phenylalanine O C) tryptophan O D) histidine O E) none of the above
Calculate the number of different octapeptides you can make in which the amino acids phenylalanine, glycine, serine, leu...
Calculate the number of different octapeptides you can make in which the amino acids phenylalanine, glycine, serine, leucine, histidine, proline, valine, and glutamine are each found. Enter your answer in the provided box. octapeptide
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon has an ester attached c. They are symmetrical d. They are planar e. The α-carbon has a phosphate group attached 2. Which is an incorrect statement regarding the side chains of amino acids? a. Tryptophan, tyrosine, and phenylalanine contain an aromatic group. b. Isoleucine, and leucine are isomers of each other. c. Lysine and methionine contain an amine group. d. Threonine, serine, and tyrosine...
9) What type of attraction would you expect between the R groups of each of the following amino acids in a tertiary str...
9) What type of attraction would you expect between the R groups of each of the following amino acids in a tertiary structure of a protein? (see Table 16.2) a) proline and phenylalanine b) Aspartate and arginine c) Tyrosine and water d) Cysteine and cysteine e) Serine and tyrosine f) Leucine and alanine 2
9) What type of attraction would you expect between the R groups of each of the following amino acids in a tertiary structure of a protein?...
Which of the following amino acids can form hydrogen bonds through their sidechain groups? Select one: a. Threonine b. P...
Which of the following amino acids can form hydrogen bonds through their sidechain groups? Select one: a. Threonine b. Phenylalanine c. Proline d. Methionine e. Glycine
#202 Dipeptides Which amino acids, in order left to right, are present in the following structure? HN OH Select one: O...
#202 Dipeptides Which amino acids, in order left to right, are present in the following structure? HN OH Select one: O a. tyrosine, serine O b. tyrosine, threonine c. phenylalanine, threonine d. phenylalanine, valine e. phenylalanine, isoleucine O
What amino acids are being coded for by the gene segment provided below? Nucleotide triplets and...
What amino acids are being
coded for by the gene segment provided below? Nucleotide triplets
and their corresponding amino acids are:
ACA= Cysteine; AAA=Phenylalanine; TGG=Threonine; CCT=Glycine;
GAT=Leucine; ATA=Tyrosine; AGG=Serine; TCT=Arginine
29. What amino acids are being coded for by the gene segment provided below? Nucleotide triplets and their corresponding amino acids are ACA- Cysteine; AAA-Phenylalanine; TGG-Threonine; CCT Glycine; GAT Leucine; ATA Tyrosine; AGG Serine; TCT Arginine a) Threonine, serine, glycine, tyrosine, leucine, phenylalanine, arginine, cysteine. b) Tyrosine, leucine, glycine, threonine,...
For the following questions, consider six proteins, each 50 amino acids long, made of just a single type of amino acid....
For the following questions, consider six proteins, each 50
amino acids long, made of just a single type of amino acid. Protein
P is made of proline; K, lysine; S, serine; E. glutamic acid; F,
phenylalanine.; and G. glycine. Your answers are going to be P, K,
S, E, F or G.
1. Which of these proteins would move fastest on SDS-PAGE?
2. Which of these proteins would move fastest on Sephadex?
3. Which of these proteins would move closest...
The chemical structures of the 20 standard amino acids at pH 7, along with their 3...
The chemical structures of the 20 standard amino acids at pH 7, along with their 3 and 1 letter codes, are givern in alphabetical order below. While the oxygen and nitrogen atoms of the peptide bonds may serve as a donor atom to complex a metal ion, very often the ligands for the metal come from the amino acid side chains. Takea few moments to examine the chemical structures of the different side chains. Circle the side chains that you...
C. AMINO ACIDS AND POLARITY Suppose you had a mixture of the following amino acids in...
C. AMINO ACIDS AND POLARITY Suppose you had a mixture of the following amino acids in a sample. List them in order of decreasing polarity at pH 7. serine phenylalanine lysine
QUESTION 24 Which of the following amino acids does not contain an aromatic R-group? O A) tyrosine B) phenylalanine O C) tryptophan O D) histidine O E) none of the above
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon has an ester attached c. They are symmetrical d. They are planar e. The α-carbon has a phosphate group attached 2. Which is an incorrect statement regarding the side chains of amino acids? a. Tryptophan, tyrosine, and phenylalanine contain an aromatic group. b. Isoleucine, and leucine are isomers of each other. c. Lysine and methionine contain an amine group. d. Threonine, serine, and tyrosine...
9) What type of attraction would you expect between the R groups of each of the following amino acids in a tertiary structure of a protein? (see Table 16.2) a) proline and phenylalanine b) Aspartate and arginine c) Tyrosine and water d) Cysteine and cysteine e) Serine and tyrosine f) Leucine and alanine 2
9) What type of attraction would you expect between the R groups of each of the following amino acids in a tertiary structure of a protein?...
#202 Dipeptides Which amino acids, in order left to right, are present in the following structure? HN OH Select one: O a. tyrosine, serine O b. tyrosine, threonine c. phenylalanine, threonine d. phenylalanine, valine e. phenylalanine, isoleucine O
What amino acids are being
coded for by the gene segment provided below? Nucleotide triplets
and their corresponding amino acids are:
ACA= Cysteine; AAA=Phenylalanine; TGG=Threonine; CCT=Glycine;
GAT=Leucine; ATA=Tyrosine; AGG=Serine; TCT=Arginine
29. What amino acids are being coded for by the gene segment provided below? Nucleotide triplets and their corresponding amino acids are ACA- Cysteine; AAA-Phenylalanine; TGG-Threonine; CCT Glycine; GAT Leucine; ATA Tyrosine; AGG Serine; TCT Arginine a) Threonine, serine, glycine, tyrosine, leucine, phenylalanine, arginine, cysteine. b) Tyrosine, leucine, glycine, threonine,...
For the following questions, consider six proteins, each 50
amino acids long, made of just a single type of amino acid. Protein
P is made of proline; K, lysine; S, serine; E. glutamic acid; F,
phenylalanine.; and G. glycine. Your answers are going to be P, K,
S, E, F or G.
1. Which of these proteins would move fastest on SDS-PAGE?
2. Which of these proteins would move fastest on Sephadex?
3. Which of these proteins would move closest...
The chemical structures of the 20 standard amino acids at pH 7, along with their 3 and 1 letter codes, are givern in alphabetical order below. While the oxygen and nitrogen atoms of the peptide bonds may serve as a donor atom to complex a metal ion, very often the ligands for the metal come from the amino acid side chains. Takea few moments to examine the chemical structures of the different side chains. Circle the side chains that you...
C. AMINO ACIDS AND POLARITY Suppose you had a mixture of the following amino acids in a sample. List them in order of decreasing polarity at pH 7. serine phenylalanine lysine
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