1. (a) Draw the structure of L-glutamic acid and show its one letter and three letter...
1. (a) Draw the structure of L-glutamic acid and show its one
letter and three letter code. (1 pt)
(b) Show the calculation for its isoelectric point. (HINT: Check
the pKa of the R group also.) (2 pt)
(c) Draw the forms of glutamic acid at pH 1, 6 and 10. (3 pt)
(d) To which electrode would glutamic acid migrate in
electrophoresis at pH 7 buffer, the anode (+) or cathode (-)? (1
pt)
(e) MSG (monosodium glutamate) is a food additive. It is a sodium
salt of glutamic acid. Draw its structure. (1 pt)
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1. (a) Draw the structure of L-glutamic acid and show its one
letter and three letter...
Aspartic acid has three pKa values, 2.09, 3.86 and 9.82. a. On the following structure for...
Aspartic acid has three pKa values, 2.09, 3.86 and 9.82. a. On the following structure for this amino acid circle the protons that can be removed and indicate the corresponding pKa value? b. Determine the value of the isoelectric point for this amino acid. c. Sketch the structure of the zwitterion. d. If electrophoresis is carried out at pH is 7.0, will this amino acid migrate to the anode(+) or cathode(-).
Draw the structure of Glutamic Acid at each pka (ex. which group is deprotonated at each...
Draw the structure of Glutamic Acid at each pka (ex. which group is deprotonated at each pH).
5. D-sorbital is found in 'sugar-free' chewing gum. It is formed by reducing D-glucose with NaBH Draw the structure of D-sorbital. s. (4 pts) Classify the following amino acid as polar, n...
5. D-sorbital is found in 'sugar-free' chewing gum. It is formed by reducing D-glucose with NaBH Draw the structure of D-sorbital. s. (4 pts) Classify the following amino acid as polar, non- polar, acidic, or basic: 6 (4 pts) The amino acid threonine (thr) has two chiral carbons. Draw a Fischer projection of the 2S,3S configuration of threonine. キ 7.(11 pts) Draw the tripeptide lys-asp-ser at physiological pH 8. (8 pts) The pK, values for aspartic acid are 2.10, 9.82...
1. a. For the following groups, indicate their predominant ionic species (draw the chemical structure) at...
1. a. For the following groups, indicate their predominant ionic species (draw the chemical structure) at pH 7.4: a. The side chain amino group (–NH3+) of the amino acid lysine, pKa=10.5. The side chain carboxyl group (-COOH) of the amino acid glutamate, pKa=4.1. b.For a buffer with a pKa of 8.03 : How will the pH and buffering capacity change when HCl is added to the buffer in “a”? How will the pH and buffering capacity change when NaOH is...
Model 1 for reference, draw the structure of the given amino acid as it nly exist under each of t...
Model 1 for reference, draw the structure of the given amino acid as it nly exist under each of the following conditions for 1g.using Table 1 in a. valine; in the stomach at PH 1.5 Serine; in the small intestine at pH 10 c. Glutamate; in the blood plasma at pH 7.4 Information: Isoelectric points As shown in Model 3, amino acids do not normally exist in unionized forms. When an aminc acd contains both a (+) and a ()...
Draw the structure of five different amino acids with the one and three letter codes at...
Draw the structure of five different amino acids with the one and three letter codes at pH of 14. Do not draw glycine, alanine, or glutamate. (16 points).
The one-letter sequence is: WATER a) Draw the peptide (R-groups trans), indicating charges, in pr...
The one-letter sequence is: WATER
a) Draw the peptide (R-groups trans), indicating charges, in
predominant form found at pH = 0.
b) What is the isoelectric point?
c) What is the average charge on the population of peptide
macromolecules at pH = 2.2?
d) What is the average charge on the population of peptide
macromolecules at pH = 12.5?
TABLE 4.1 Amino Acid Alanine Arginine Asparagine Aspartic acid Cysteine....« Glutamic acid Glutamine Glycine Histidine Isoleucine Leucine Lysine … Methionine Phenylalanine...
questions e-f and g.and k. a) Use the 3 letter symbols for a 6 amino acid...
questions e-f and g.and k.
a) Use the 3 letter symbols for a 6 amino acid peptide chain containing at least one polar and at least one acidic or basic amino acid. (All at physiological pH.) Asp - Gly-Glu-Tyr- Phe- Ala OM b) Draw the primary structure with its peptide bonds, side chains, etc. in the correct order. CH3 NH - E-N -CH. - CH - C- 2-I U=0 -ch- & N-chi- CH₃ CH ₂ Coo CH н My Coo...
show work please 1) The structure of the compound imidazole is shown below, with its ionization...
show work please
1) The structure of the compound imidazole is shown below, with its ionization reaction and pka. a) At PH 7.5, which form of imidazole do you expect to predominate? (1 pt) b) What percentage of imidazole is charged at pH 7.5? (3 pt)
1.00 L buffer made with 0.50 M generic acid HA and its conjugate salt 0.75 M...
1.00 L buffer made with 0.50 M generic acid HA and its conjugate salt 0.75 M NaA has a pka of 8.599 If you add 45.0 ml of 0.446 M NaOH, what is the new pH? Answer to 3 decimal places. (Your scratch paper must show work to receive partial credit)
5. D-sorbital is found in 'sugar-free' chewing gum. It is formed by reducing D-glucose with NaBH Draw the structure of D-sorbital. s. (4 pts) Classify the following amino acid as polar, non- polar, acidic, or basic: 6 (4 pts) The amino acid threonine (thr) has two chiral carbons. Draw a Fischer projection of the 2S,3S configuration of threonine. キ 7.(11 pts) Draw the tripeptide lys-asp-ser at physiological pH 8. (8 pts) The pK, values for aspartic acid are 2.10, 9.82...
Model 1 for reference, draw the structure of the given amino acid as it nly exist under each of the following conditions for 1g.using Table 1 in a. valine; in the stomach at PH 1.5 Serine; in the small intestine at pH 10 c. Glutamate; in the blood plasma at pH 7.4 Information: Isoelectric points As shown in Model 3, amino acids do not normally exist in unionized forms. When an aminc acd contains both a (+) and a ()...
Draw the structure of five different amino acids with the one and three letter codes at pH of 14. Do not draw glycine, alanine, or glutamate. (16 points).
The one-letter sequence is: WATER
a) Draw the peptide (R-groups trans), indicating charges, in
predominant form found at pH = 0.
b) What is the isoelectric point?
c) What is the average charge on the population of peptide
macromolecules at pH = 2.2?
d) What is the average charge on the population of peptide
macromolecules at pH = 12.5?
TABLE 4.1 Amino Acid Alanine Arginine Asparagine Aspartic acid Cysteine....« Glutamic acid Glutamine Glycine Histidine Isoleucine Leucine Lysine … Methionine Phenylalanine...
questions e-f and g.and k.
a) Use the 3 letter symbols for a 6 amino acid peptide chain containing at least one polar and at least one acidic or basic amino acid. (All at physiological pH.) Asp - Gly-Glu-Tyr- Phe- Ala OM b) Draw the primary structure with its peptide bonds, side chains, etc. in the correct order. CH3 NH - E-N -CH. - CH - C- 2-I U=0 -ch- & N-chi- CH₃ CH ₂ Coo CH н My Coo...
show work please
1) The structure of the compound imidazole is shown below, with its ionization reaction and pka. a) At PH 7.5, which form of imidazole do you expect to predominate? (1 pt) b) What percentage of imidazole is charged at pH 7.5? (3 pt)
1.00 L buffer made with 0.50 M generic acid HA and its conjugate salt 0.75 M NaA has a pka of 8.599 If you add 45.0 ml of 0.446 M NaOH, what is the new pH? Answer to 3 decimal places. (Your scratch paper must show work to receive partial credit)
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