What is the 20 amino acids that make up a protein and whose side chain forms...
Homework Answers
- An amino acid is an organic compound characterized by having a carboxyl group(-COOH), amino group(NH2), and side chain attached to a central carbon atom.
- Amino acids are used as precursors for other molecules in the body. Condensation of amino acids forms polypeptides which in turn may be modified and combined to form proteins.
- Below are the 20 amino acids which form protein in our body with their three letter and one letter codes :
- Arginine - Arg - R
• Lysine - Lys - K
• Aspartic acid - Asp - D
• Glutamic acid - Glu - E - Glutamine - Gln - Q
• Asparagine - Asn - N
• Histidine - His - H
• Serine - Ser - S
• Threonine - Thr - T
• Tyrosine - Tyr - Y
• Cysteine - Cys - C - Tryptophan - Trp - W
• Tyrosine - Tyr - Y
• Methionine - Met - M - Alanine - Ala - A
• Isoleucine - Ile - I
• Leucine - Leu - L
• Methionine - Met - M
• Phenylalanine - Phe - F
• Valine - Val - V
• Proline - Pro - P
• Glycine - Gly - G
Fe2+ in hemoglobin is co-ordinated by Histidine side chain. The following structure will clear how Histidine is attached to Fe2+ :
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What is the 20 amino acids that make up a protein and whose side
chain forms...
Even though hydrophobic amino acids tend to be buried in the interior of a globular protein,...
Even though hydrophobic amino acids tend to be buried in the interior of a globular protein, polar neutral and polar charged amino acids are found in the interior of a globular protein as well. Recall Figure 4.26 of myoglobin. To see how this can happen, consider a model of a generic globular protein (below). The side chains of only seven of the amino acids are shown. 5. "DH" is a side chain that is a hydrogen bond donor "A" is...
60) Lipids are composed of: c) fatty acids and glycerol amino acids and glycerol nucleic acids...
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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_...
Name and draw two amino acids, one that is a hydrogen bond donor as a side...
Name and draw two amino acids, one that is a hydrogen bond donor as a side chain and one that is hydrogen bond acceptor as a side chain.
Question 2 1 pts Amino acids are classified by their Rgroup (side chain) carboxylic acid group...
Question 2 1 pts Amino acids are classified by their Rgroup (side chain) carboxylic acid group peptide bond alpha carbon amine group
There are 20 different tRNA molecules, one for each of the 20 amino acids found in protein
There are 20 different tRNA molecules, one for each of the 20 amino acids found in protein. During protein synthesis, the job of a tRNA molecule is to carry its particular amino acid to the growing protein chain and find the correct amino acid position there. It does this by matching a 3- letter anticodon on the tRNA to a complementary 3-letter codon on mRNA. Below, in a diagram of a ERNA molecule, nucleotides are represented by small circles, some...
Considering the side chain of each of the amino acids at pH 7.4, is that amino...
Considering the side chain of each of the amino acids at pH 7.4, is that amino acid classified at neutral, basic, or acidic? Neutral Basic Acidic Answer Bank Leu histidine Thr H3C-c-coo TOOC-CH2-c-COO NH3 NH3 glutamate H2N-C-CH2-C-Coo NH3
The pK of the side chain of amino acid X in a polypeptide is normally in...
The pK of the side chain of amino acid X in a polypeptide is normally in the range of 9-10 and carries a positive charge when protonated. Suppose you have a soluble globular protein and you find there is an X that has a pK of 6.5. What is the most likely reason for such a large drop in pK? Circle the correct answer. a) X is on the surface of the protein where it ion pairs with the carboxylate...
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...
Lumpur QUESTION 2 Myoglobin is a globular protein. About half of its 153 amino acids have...
Lumpur QUESTION 2 Myoglobin is a globular protein. About half of its 153 amino acids have nonpolar side chains. Where would you expect those amino acids to be located in the tertiary structure? Inside the compact tertiary structure Outside the compact tertiary structure Evenly distrubuted On the edges of the amino acids primary chain QUESTION 3 What type of bonding is responsible for the primary structure of a protein? covalent bonds hydrogen bonds ionic bonds alpha helices
Even though hydrophobic amino acids tend to be buried in the interior of a globular protein, polar neutral and polar charged amino acids are found in the interior of a globular protein as well. Recall Figure 4.26 of myoglobin. To see how this can happen, consider a model of a generic globular protein (below). The side chains of only seven of the amino acids are shown. 5. "DH" is a side chain that is a hydrogen bond donor "A" is...
60) Lipids are composed of: c) fatty acids and glycerol amino acids and glycerol nucleic acids and glycerol fatty acids and water fatty acids and sugar e) 61) The bond between two amino acids is a: a) hydrogen bond b) covalent bond c) peptide bond d) b and c e) none of the above 62) Hemoglobin has which tertiary structure: a) fibrous b) globular c) four subunits--two alpha chains, two beta chains d) alpha helix e) none of the above...
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_...
Question 2 1 pts Amino acids are classified by their Rgroup (side chain) carboxylic acid group peptide bond alpha carbon amine group
Considering the side chain of each of the amino acids at pH 7.4, is that amino acid classified at neutral, basic, or acidic? Neutral Basic Acidic Answer Bank Leu histidine Thr H3C-c-coo TOOC-CH2-c-COO NH3 NH3 glutamate H2N-C-CH2-C-Coo NH3
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...
Lumpur QUESTION 2 Myoglobin is a globular protein. About half of its 153 amino acids have nonpolar side chains. Where would you expect those amino acids to be located in the tertiary structure? Inside the compact tertiary structure Outside the compact tertiary structure Evenly distrubuted On the edges of the amino acids primary chain QUESTION 3 What type of bonding is responsible for the primary structure of a protein? covalent bonds hydrogen bonds ionic bonds alpha helices
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