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19. Calculate the net charge on the following nonapeptide at the physiological pH 7.4, and predict...
please explain how to solve this problem, the answer is provided 9. Peptides: (20 pts.). A...
please explain how to solve this problem, the answer
is provided
9. Peptides: (20 pts.). A polypeptide (X) gives 7 fragments when treated with chymotrypsin (A-G). The same peptide also gives 9 fragments when treated with trypsin (I- IX). After Chymotrypsin A) Thr-Thr-Tyr-Ala-Gly-Phe-Phe-Ile-Asp- Lys B) Ala-Cys-Pro-Leu-Tyr-Gin-lle-Arg C) Met-Ser-Thr-Tyr-Pro-Gly-Arg D) Cys-Leu-Val-Phe-Ile-Lys E) Leu-Ala-Trp-Gly-Val F) Ser-Phe-Ala-Pro-Lys G) Met-Asp-Lys Afier Trypsin I) Ala-Pro-Lys-Met-Asp-Lys-Thr-Thr-Tyr II) Pro-Gly-Arg-Cys-Leu-Val-Phe III) Ile-Lys-Ala-Cys-Pro-Leu-Tyr IV) Ile-Asp-Lys-Met-Ser-Thr-Tyr V) Gin-Ile-Arg-Leu-Ala-Trp VIAla-Gly-Phe VII) Gly-Val VIII) Ser-Phe LX) Phe A) What is the primary...
What is the approximate net charge of the following pentapeptide at pH 10? Arg-Gln-Cys-His-Ala What is...
What is the approximate net charge of the following pentapeptide at pH 10? Arg-Gln-Cys-His-Ala What is the Isoelectric point (pI) of the peptide given above? Use the pKa values given here when needed: Side group/ amino acid pKa Asp 3.9 Glu 4.1 HIs 6.0 Cys 8.4 Tyr 10.5 Lys 10.5 Arg 12.5 C-term 3.5 N-term 9.0
3. A protein contains the following amino acids: O ALA 4 GLN 1 LEU 3 ARG...
3. A protein contains the following amino acids: O ALA 4 GLN 1 LEU 3 ARG 4 GLU 4 LYS 4 ASN 5 GLY O MET 1 ASP 1 HIS 2 PHE 4 ILE 4 PRO 8 SER 5 THR 1 TRP 2 TYR 2 VAL BGYS. a) What is its net charge at pH 1? b) What is its net charge at PH 13? c) Calculate the pl. 4. In what order would the amino acids GLU, LYS, and...
1. As we increase our understanding of how proteins fold, we can start making predictions off...
1. As we increase our understanding of how proteins fold, we can start making predictions off of the primary amino acid sequence, about how a protein will fold. Use the peptide he answer the following questions: lle-Ala-His-Thr-Tyr-Gly-Pro-Phe-Glu-Ala-Ala-Met-Cys-Lys- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Trp-Glu-Ala-Gln-Pro-Asp-Gly-Met-Glu-Cys-Ala-Phe-His-Arg 15 16 17 18 19 20 21 22 23 24 25 26 27 28 a. In the amino acid sequence above, where would you predict that bends or...
-2. Which of the following tripeptides would carry a net charge of-1 at pH 7? Markallthatapply....
-2. Which of the following tripeptides would carry a net charge of-1 at pH 7? Markallthatapply. (3 pts.) A. Asp-Ala-Arg C. Lys-Gly-Asn D. Glu-Lys-Asp E. Leu-Asp-Glu F. Arg-lleu-Cys B. Met-Pro-Glu The Kd for a dimeric protein complex is 2.2 μM. (3 pts.) Mark all that are true about this dimeric protein complex. A. 3. At equilibrium, the concentration of the individual subunits is very, very low. B. If this is a homodimer, it can be called an αβ dimer. C....
Predict the charge on the major species of the peptide Ile–Arg–Asp–Ala–Lys–Ser–Gln at pH 7.0
Predict the charge on the major species of the peptide Ile–Arg–Asp–Ala–Lys–Ser–Gln at pH 7.0
Can someone explain how these work? 4. For a solution of Cys (C), at what pH...
Can someone explain how these work?
4. For a solution of Cys (C), at what pH would the net charge be closest to 1? a) 10.7 b) 8.4 c) (1.9-8.4)/2 = 5.5 d) (10.7 + 8.4)/2 = 9.55 5. For a solution of Tyr (Y), what percentage of the side chain R group's OH would be deprotonated at pH = 10.5? a) 0% b) 25% c) 50% d) 100% 6. For the peptide His -Asp-Gln-Glu-Ala- Lys (HDQEAK), what would be...
How do you calculate the net charge of a molecule? For example what would the net...
How do you calculate the net charge of a molecule? For example what would the net charge of this molecule in the stomach at a ph of 1.8 be? The answer is +1 but why? I understand that the asp molecule is negatively charged so why is the answer +1? I am referencing to Lys his arg being positively charged Asp and gluare negatively charges and Cys and tyr neutral
a. Using the table below, predict the secondary structure most likely adopted by the heptapeptide "RANGEHEAL". W...
a. Using the table below, predict the secondary structure most
likely adopted by the heptapeptide "RANGEHEAL". Will it be
alpha-helical, beta-strand, or just random coil?
b. Hydrogen bonds between backbone residues stabilize
interactions between
helixes and
sheets. Knowing this and other information about hydrogen bonds,
which amino acid from the picture below will destabilize secondary
protein structure?
Conformational Preferences of the Amino Acids Preference Amino acid a-helix B-strand Reverse turn Glu 1.59 0.52 1.01 Ala 1.41 0.72 0.82...
Predict the charge on the major species of the peptide Ile-Lys-Asp-Arg-Ser-Gln at pH 7.0 Please explain...
Predict the charge on the major species of the peptide Ile-Lys-Asp-Arg-Ser-Gln at pH 7.0 Please explain if you can. Thanks
please explain how to solve this problem, the answer
is provided
9. Peptides: (20 pts.). A polypeptide (X) gives 7 fragments when treated with chymotrypsin (A-G). The same peptide also gives 9 fragments when treated with trypsin (I- IX). After Chymotrypsin A) Thr-Thr-Tyr-Ala-Gly-Phe-Phe-Ile-Asp- Lys B) Ala-Cys-Pro-Leu-Tyr-Gin-lle-Arg C) Met-Ser-Thr-Tyr-Pro-Gly-Arg D) Cys-Leu-Val-Phe-Ile-Lys E) Leu-Ala-Trp-Gly-Val F) Ser-Phe-Ala-Pro-Lys G) Met-Asp-Lys Afier Trypsin I) Ala-Pro-Lys-Met-Asp-Lys-Thr-Thr-Tyr II) Pro-Gly-Arg-Cys-Leu-Val-Phe III) Ile-Lys-Ala-Cys-Pro-Leu-Tyr IV) Ile-Asp-Lys-Met-Ser-Thr-Tyr V) Gin-Ile-Arg-Leu-Ala-Trp VIAla-Gly-Phe VII) Gly-Val VIII) Ser-Phe LX) Phe A) What is the primary...
3. A protein contains the following amino acids: O ALA 4 GLN 1 LEU 3 ARG 4 GLU 4 LYS 4 ASN 5 GLY O MET 1 ASP 1 HIS 2 PHE 4 ILE 4 PRO 8 SER 5 THR 1 TRP 2 TYR 2 VAL BGYS. a) What is its net charge at pH 1? b) What is its net charge at PH 13? c) Calculate the pl. 4. In what order would the amino acids GLU, LYS, and...
1. As we increase our understanding of how proteins fold, we can start making predictions off of the primary amino acid sequence, about how a protein will fold. Use the peptide he answer the following questions: lle-Ala-His-Thr-Tyr-Gly-Pro-Phe-Glu-Ala-Ala-Met-Cys-Lys- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Trp-Glu-Ala-Gln-Pro-Asp-Gly-Met-Glu-Cys-Ala-Phe-His-Arg 15 16 17 18 19 20 21 22 23 24 25 26 27 28 a. In the amino acid sequence above, where would you predict that bends or...
-2. Which of the following tripeptides would carry a net charge of-1 at pH 7? Markallthatapply. (3 pts.) A. Asp-Ala-Arg C. Lys-Gly-Asn D. Glu-Lys-Asp E. Leu-Asp-Glu F. Arg-lleu-Cys B. Met-Pro-Glu The Kd for a dimeric protein complex is 2.2 μM. (3 pts.) Mark all that are true about this dimeric protein complex. A. 3. At equilibrium, the concentration of the individual subunits is very, very low. B. If this is a homodimer, it can be called an αβ dimer. C....
Can someone explain how these work?
4. For a solution of Cys (C), at what pH would the net charge be closest to 1? a) 10.7 b) 8.4 c) (1.9-8.4)/2 = 5.5 d) (10.7 + 8.4)/2 = 9.55 5. For a solution of Tyr (Y), what percentage of the side chain R group's OH would be deprotonated at pH = 10.5? a) 0% b) 25% c) 50% d) 100% 6. For the peptide His -Asp-Gln-Glu-Ala- Lys (HDQEAK), what would be...
a. Using the table below, predict the secondary structure most
likely adopted by the heptapeptide "RANGEHEAL". Will it be
alpha-helical, beta-strand, or just random coil?
b. Hydrogen bonds between backbone residues stabilize
interactions between
helixes and
sheets. Knowing this and other information about hydrogen bonds,
which amino acid from the picture below will destabilize secondary
protein structure?
Conformational Preferences of the Amino Acids Preference Amino acid a-helix B-strand Reverse turn Glu 1.59 0.52 1.01 Ala 1.41 0.72 0.82...
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