Draw the structure of the N−phenylthiohydantoin formed by initial Edman degradation of the peptide Ala―Gly―Phe―Phe. Do...

Draw the structure of the N−phenylthiohydantoin formed by initial Edman degradation of the peptide Ala―Gly―Phe―Phe. Do not draw wedges or dashes in your answer.

Expert Solution

queen_honey_blossom answered 2 years ago

Examine the following peptide then answer parts a-c Lys-Asp-Pro-Leu-Trp-Ala-His-Met-Gln-Phe-Gly-Arg a.estimate the net charge at pH 7...

Examine the following peptide then answer parts a-c Lys-Asp-Pro-Leu-Trp-Ala-His-Met-Gln-Phe-Gly-Arg a.estimate the net charge at pH 7 B.estimate the net charge at pH 12

For the peptide below Thr, Ser, Tyr, Met, Asp, Phe, His, Lys, Trp, Gly, Pro, Arg,...

For the peptide below Thr, Ser, Tyr, Met, Asp, Phe, His, Lys, Trp, Gly, Pro, Arg, Ile, Glu Calculate overall charge for pH=5 and pH=11 Calculate overall pI

QUESTION 6 Which of the following peptides is most likely an alpha helix? Arg-Ala-Tyr-Pro-Met-Gly-Val-Leu-Ser-Asp Glu-Ala-Tyr-Pro-Met-Gly-Val-Leu-Ser-Lys Glu-Ala-Tyr-Phe-Met-Gln-Val-Leu-Ser-Lys...

QUESTION 6 Which of the following peptides is most likely an alpha helix? Arg-Ala-Tyr-Pro-Met-Gly-Val-Leu-Ser-Asp Glu-Ala-Tyr-Pro-Met-Gly-Val-Leu-Ser-Lys Glu-Ala-Tyr-Phe-Met-Gln-Val-Leu-Ser-Lys Arg-Ala-Tyr-Phe-Met-Gln-Val-Leu-Ser-Asp

A peptide has the following sequence: A-K-R-H-G-E-E-R (Ala-Lys-Arg-His-Gly-Glu-Glu-Arg). What is the pI for this peptide? You...

A peptide has the following sequence: A-K-R-H-G-E-E-R (Ala-Lys-Arg-His-Gly-Glu-Glu-Arg). What is the pI for this peptide? You can use even integer approximations for pKa values: I know the answer is 9.5 but I need to know how to get to this answer.

The amino acid sequence of human adrenocorticotropin, a polypeptide hormone, is: Ser-Tyr-Ser-Met-Glu-His-Glu-Arg-Trp-Gly-Lys-Pro-Val-Gly-Lys-Lys-Arg-Arg-Pro-Val-Lys-Val-Tyr-Pro-Asp-Ala-Gly-Glu-Asp-Gln-Ser-Ala-Glu-Ala-Glu-Pro-Leu-Glu-Phe a)What is the appr

The amino acid sequence of human adrenocorticotropin, a polypeptide hormone, is: Ser-Tyr-Ser-Met-Glu-His-Glu-Arg-Trp-Gly-Lys-Pro-Val-Gly-Lys-Lys-Arg-Arg-Pro-Val-Lys-Val-Tyr-Pro-Asp-Ala-Gly-Glu-Asp-Gln-Ser-Ala-Glu-Ala-Glu-Pro-Leu-Glu-Phe a)What is the approximate net charge of this molecule at pH 3? ph 7? ph 9? Assume that the pKs of the terminal -NH3+ and -COOH groups are 7.8 and 3.6, respectively.

which rptoleyic enzye would cleave this peptide into the most fragments? Asn-Met-Thr-Gln-Gly-Arg-Cys-Lys-Val-Asn-Thr-Phe-Val-His-Glu-Leu-Val-Asp-Val-Cys-Phe-Lys-Glu A. Trypsin B.Chymotrypsin C.Thermolysint...

which rptoleyic enzye would cleave this peptide into the most fragments? Asn-Met-Thr-Gln-Gly-Arg-Cys-Lys-Val-Asn-Thr-Phe-Val-His-Glu-Leu-Val-Asp-Val-Cys-Phe-Lys-Glu A. Trypsin B.Chymotrypsin C.Thermolysint D.they would all given an equal amou

a) Draw the complete covalent structure of the tripeptide Met-Tyr-Arg, with trans peptide bonds, as it...

a) Draw the complete covalent structure of the tripeptide Met-Tyr-Arg, with trans peptide bonds, as it would exist at pH 7. b) Write the 1-letter code for each of the three amino acids below the structure. c) What is the overall charge of this peptide at pH 7? d) What is the overall charge at pH 12? e) This tri-peptide is reacted with 6M HCl and heat, which breaks-up the individual peptide bonds. The mixture of the 3 amino acids...

Nitrous oxide (N2O) is a greenhouse gas. a) Draw the best Lewis structure (structure N-N-O) b)...

Nitrous oxide (N2O) is a greenhouse gas. a) Draw the best Lewis structure (structure N-N-O) b) Why does N2O act as a greenhouse gas while n2 does not? c) What is one of the main sources of N2O emissions?

Draw the complete Lewis structure (including lone pairs of electrons) for the anion that is formed...

Draw the complete Lewis structure (including lone pairs of electrons) for the anion that is formed after acetic acid has lost its acidic hydrogen. Can you draw more than one structure? What do you call it when more than one Lewis Structure is possible for an ion or a molecule

1) Draw the structure of the product formed by addition of vitamin B1 and benzaldehyde. 2)...

1) Draw the structure of the product formed by addition of vitamin B1 and benzaldehyde. 2) Ammonia adds to carbonyl groups but is ineffective as a catalyst for the benzoin condensation. Explain. 3) Write a balanced oxidation-reduction equation for the oxidation of benzoin by ammonium nitrate (the cupric ion catalysis need not to be considered). 4) In the benzil oxidation the initial blue color changes to gren as the reaction proceeds. Why? 5) In dilantin sodium it is the imide...

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