Under the assumption that the occurrence percentage of amino acids of 20 proteinogenic is equal (i.e....
Under the assumption that the occurrence percentage of amino acids of 20 proteinogenic is equal (i.e. 5% each). Calculate the molar weight of a protein with 500 amino acids residues.
Homework Answers
We know that the average Mol wt of an amino acid is 110Da
So the weight of 500 amino acids is 500*110=55000Da
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Under the assumption that the occurrence percentage of amino
acids of 20 proteinogenic is equal (i.e....
5. Biophysics 5. Based only on polarity of the amino acids (i.e., two non-identical amino acids...
5. Biophysics
5. Based only on polarity of the amino acids (i.e., two non-identical amino acids are considered similar if they are both hydrophobic, or polar, or charged), 5. Based only on polarity of the amino acids (i.e., two non-identical A) how would you manually perform the global alignment of the two polypeptide sequences (gaps are allowed): VLLVAKKR ITSVVPKR and ILLVKKKLTTVVLPKK? B) Complete the scoring matrix for the alignment of the above sequences if a match score is 1, mismatch...
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...
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more...
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more likely to be found in these structures based on its charge and R-group size? A. Glycine B. Proline C. A sequence of several Glutamate D. A sequence of several Lysine E. Alanine Question 12. Which of the following is least likely to result in protein denaturation? A) Altering net charge by changing pH B) Changing the salt concentration C) Disruption of weak interactions by...
Can someone please help with questions 14, 16,& 20 Name two sulfur amino acids. IgG. IgA...
Can someone please help with questions 14, 16,& 20
Name two sulfur amino acids. IgG. IgA and IgM antibodies are proteins that arc stabilized by disulfide bonds. Explain the formation of this type of bond and the type. Explain one of the posttranslational modification that happens to collagen. Deficiency of Vitamin C (ascorbate) can cause Scurvy. Explain the mechanism. D-serine is a neurotransmitter. Explain the stereochemistry and the enzymatic conversion of substrate into product. Methionine can also be classified as...
Homework #11 (5 points) 1. Draw two amino acids. Circle around the carboxyl ends. Put a...
Homework #11 (5 points) 1. Draw two amino acids. Circle around the carboxyl ends. Put a double line und and the three-letter abbreviation for each amino acid. two amino acids. Circle the central carbon atoms. Underline the amino ends. Carboxyl ends. Put a double line under the R groups/ side chains. Write the name 2. How do enzymes increase the rate of chemical reactions? 3. What type of bond joins two amino acids together? 4. What are the three types...
What is the 20 amino acids that make up a protein and whose side chain forms...
What is the 20 amino acids that make up a protein and whose side chain forms a coordinate bond with Fe2 + in hemoglobin?
1. Which of the following is not true of amino acids? a) Your intestines do not...
1. Which of the following is not true of amino acids? a) Your intestines do not absorb proteins, only the amino acids released by hydrolysis of these proteins. b) A normal, natural, unprocessed diet does not contain proteins, only the free amino acids. c) Amino acids are NEEDED for making your proteins. d) Amino acids are NEEDED for making the nitrogenous bases of your nucleic acids. e) In you, amino acids are not stored as protein. 2. Which of the...
Problems 1) Look at the structure of the natural amino acids (look them up). What do the 8 primordial amino acids have in common (generally)? What do you notice about the ones with 2 or fewer codons?...
Problems 1) Look at the structure of the natural amino acids (look them up). What do the 8 primordial amino acids have in common (generally)? What do you notice about the ones with 2 or fewer codons? 2) Calculate the actual information content per amino acid of protein translation by using the genetic code and the fact that in nature, the frequency of U and C is 22%, A is 30% and G is 26%. Finally, since 3 of 64...
Calculate the approximate number of amino acid residues contained within a single Protein X molecule. Questions...
Calculate the approximate number of amino acid residues
contained within a single Protein X molecule.
Questions #20-23 pertain to the SDS-PAGE images shown below. Gel A (left) is a non-reducing SDS-PAGE. Gel B (right) is a reducing SDS-PAGE. The M lanes contain molecular weight markers. Lanes 1, 2, &3 were loaded with equal volumes of a purified preparation of Protein X. Lane 4 was loaded with an equal volume of a crude preparation of Protein X (prior to purification). M...
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino...
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino acids none of the above Question 2 (0.5 points) Which two functional groups does an amino acid contain? amine and carboxylic acid carboxylic acid and amide amide and heterocyclic ring heterocyclic ring and amine Question 3 (0.5 points) Do amino acids commonly exist in nature as neutral molecules with all uncharged atoms? Yes No Question 1 (0.5 points) What is a protein? A polymer...
5. Biophysics
5. Based only on polarity of the amino acids (i.e., two non-identical amino acids are considered similar if they are both hydrophobic, or polar, or charged), 5. Based only on polarity of the amino acids (i.e., two non-identical A) how would you manually perform the global alignment of the two polypeptide sequences (gaps are allowed): VLLVAKKR ITSVVPKR and ILLVKKKLTTVVLPKK? B) Complete the scoring matrix for the alignment of the above sequences if a match score is 1, mismatch...
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more likely to be found in these structures based on its charge and R-group size? A. Glycine B. Proline C. A sequence of several Glutamate D. A sequence of several Lysine E. Alanine Question 12. Which of the following is least likely to result in protein denaturation? A) Altering net charge by changing pH B) Changing the salt concentration C) Disruption of weak interactions by...
Can someone please help with questions 14, 16,& 20
Name two sulfur amino acids. IgG. IgA and IgM antibodies are proteins that arc stabilized by disulfide bonds. Explain the formation of this type of bond and the type. Explain one of the posttranslational modification that happens to collagen. Deficiency of Vitamin C (ascorbate) can cause Scurvy. Explain the mechanism. D-serine is a neurotransmitter. Explain the stereochemistry and the enzymatic conversion of substrate into product. Methionine can also be classified as...
Homework #11 (5 points) 1. Draw two amino acids. Circle around the carboxyl ends. Put a double line und and the three-letter abbreviation for each amino acid. two amino acids. Circle the central carbon atoms. Underline the amino ends. Carboxyl ends. Put a double line under the R groups/ side chains. Write the name 2. How do enzymes increase the rate of chemical reactions? 3. What type of bond joins two amino acids together? 4. What are the three types...
1. Which of the following is not true of amino acids? a) Your intestines do not absorb proteins, only the amino acids released by hydrolysis of these proteins. b) A normal, natural, unprocessed diet does not contain proteins, only the free amino acids. c) Amino acids are NEEDED for making your proteins. d) Amino acids are NEEDED for making the nitrogenous bases of your nucleic acids. e) In you, amino acids are not stored as protein. 2. Which of the...
Problems 1) Look at the structure of the natural amino acids (look them up). What do the 8 primordial amino acids have in common (generally)? What do you notice about the ones with 2 or fewer codons? 2) Calculate the actual information content per amino acid of protein translation by using the genetic code and the fact that in nature, the frequency of U and C is 22%, A is 30% and G is 26%. Finally, since 3 of 64...
Calculate the approximate number of amino acid residues
contained within a single Protein X molecule.
Questions #20-23 pertain to the SDS-PAGE images shown below. Gel A (left) is a non-reducing SDS-PAGE. Gel B (right) is a reducing SDS-PAGE. The M lanes contain molecular weight markers. Lanes 1, 2, &3 were loaded with equal volumes of a purified preparation of Protein X. Lane 4 was loaded with an equal volume of a crude preparation of Protein X (prior to purification). M...
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino acids none of the above Question 2 (0.5 points) Which two functional groups does an amino acid contain? amine and carboxylic acid carboxylic acid and amide amide and heterocyclic ring heterocyclic ring and amine Question 3 (0.5 points) Do amino acids commonly exist in nature as neutral molecules with all uncharged atoms? Yes No Question 1 (0.5 points) What is a protein? A polymer...
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