what is the overall net charge on the peptide KKSG at pH 7.0?

Q: Classify each peptide chain as part of a parallel B sheet, part of an antiparallel B sheet, either…

A:

Q: What is the charge of the Peptide DMQK at pH=7   ? A) -2 B) 0 C) -1 D) +2

A: The peptide DMQK consists of aspartate (D), methionine (M), glutamine (Q) and lysine (K)

Q: Pentapeptide has a sequence of APEDS Structure of pentapeptide in its proper ionization state at pH…

A: The question is based on the concept of biomolecules. We have to draw pentapeptide and calculate…

Q: Calculate an approximate pI for Peptide E-G-E-A

A: The chemical structure for peptide is shown below.

Q: What is the charge on the C-terminus of a peptide at pH 5?

A: Given,  pH = 5   To find : charge on the C-terminus of a peptide

Q: Explain the difference in the pKa values of the carboxyl groups of alanine, serine, and cysteine.

A: The compounds in which both amino (NH2) and carboxylic acid (COOH) group are present are known as…

Q: At what pH does a 0.02 M solution of Ala-Cys exhibit a net charge of -1.5? The pK, for the…

A: Isoelectric point is the pH at which the amino acid carries no net charge i.e. it is electrically…

Q: What is the correct structure for the peptide SGHKRY at pH 5.0?

A: If the pKa of an acid is higher than the pH of the solution then the acid remains in its protonated…

Q: The initial pH of a 2M arginine solution is 14. What is the predominant structure of arginine in…

A: At pH = 14 , arginine exists in completely deprotonated form .

Q: For lysine and arginine, the isoelectric point, pI, occurs at a pH where the net charge on the…

A: The isoelectric point for the amino acid Lysine can be calculated by using the pKa values of α-amino…

Q: When the pentapeptide below is heated first with 2,4-dinitrofluorobenzene (and base) and then…

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Q: A given glycine solution was titrated against NaOH and pH of the final solution was 4.8. Given that…

A: In the amino acid has the two acidic hydrogens will be present. The first most acidic hydrogen is…

Q: Draw the structure of the tetrapeptide Ser-Leu-Phe-Pro at pH 7.0

A: Structure of the tetrapeptide Ser-Leu-Phe-Pro at pH 7.0

Q: Part C. Give the structure of the following and encircle the peptide bond 1. Glycyl - Seryl - Valine…

A:

Q: QUESTION 1 Use these pKa values to caloulate the charge on the peptide below at pH 6. alpha COOH 2.0…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: 3. A homopolymer of histidine (polyhistidine) adopts an alpha helix structure at pH 9 but is…

A: Proteins undergoes denaturation and unfolds due to variation in pH or in higher acidic or basic pH…

Q: What is the charge of each amino acid residue in the peptide chain and what is the net charge on the…

A: The peptide KGL contains the following amino acids lysine glycine leucine

Q: The peptide cys-leu-glu-ala-cys-lys is at pH 7 in oxidizing conditions. Part a) Draw the peptide's…

A: The given peptide is cys-leu-glu-ala-cys-lys. Given pH = 7

Q: An amino acid's guadinine side chain has a pKa of 12.5 what is the ratio of uncharged to charged…

A: An amino acid's guanidine side chain has a pKa of 12.5. The ratio of uncharged to charged guanidine…

Q: What is the isoelectric point for the peptide MNPQR at pH 7? Draw the structure, including the…

A: The mentioned peptide is MNPQR.

Q: what is the overall charge on the peptide : Pro- Glu-Tyr-Gln-Arg at pH=11

A: A polypeptide or simply peptide is an entity that contains amino acids bonded to each other by…

Q: If the pl for asparagine is 5.43, draw the structure at a pH of 9.5?

A: The pl for asparagine = 5.43 pH = 9.5

Q: What is the predominant form of the following amino acids at pH= 11? What is the overall charge on…

A: The amino acids have two functional groups in them and they are amine(-NH2) the basic group and…

Q: NH2 OH OH H2N" 'N' HO ..... O: IZ ZI IZ

A: N-Terminal residue is the amino acid residue having free NH2 group and conventionally it is lying on…

Q: QUESTION 1 Use these pka values to calculate the charge on the peptide below at pH 6. alpha COOH 2.0…

A: T: Threonine, pKa: 9 S: Serine Y: Tyrosine, pKa: 10 M: Methionine C: Cysteine, pKa: 8 F:…

Q: Calculate the isoelectric pH of this peptide: His-Tyr

A: Here we are required to find the isoelectric point pH of the peptide.

Q: What is the major force responsible for the formation of an a-helix in protein secondary structure?…

A: In this question, we will see which force is responsible for making alpha helix in secondary…

Q: what is the net charge of the peptide Arg-Ala-Phe-Leu at pH at 8?

A:

Q: Draw three-dimensional representations of the following amino acids. ) d-serine

A: D-Serine is a non-essential amino acid and dextro isomer of serine with R-confirguration.

Q: Consider the peptides below. HO OH Peptide 1: HO. HO. HO, Peptide 2: pro-ile-glu-arg How many…

A: Amino acids can be defined as the organic compound containing an amino group and carboxylic group…

Q: Taking the structure of the amino acids into account, give a comparative discussion of these pK…

A: Amino acids are the biomolecules in which central carbon atom is attached to a carboxylate group,…

Q: A plot of activity versus pH for an enzyme that functions in the cytosol of a cell at pH of about 7…

A: The activity of enzymes varies at different pH levels.

Q: Which peptide in below pair has side chains that exhibit predominantly van der Waals forces?…

A: Van der Waals forces are the forces that are observed in peptides which are non polar in nature or…

Q: Which of the following peptides have a net positive charge at pH 7? (a) Gly-Ser-Lys

A: It is given that a tripeptide Gly-Ser-Lys is present and it needs to be determined whether it will…

Q: What would be the overall yield of a peptide containing 15 amino acids if the yield for the…

A: The total nmber of given amino acids = 15  and the percentage of the single incorporation would be =…

Q: Which of the following peptides have a net positive chargeat pH 7? (a) Gly-Ser-Lys, (b) Pro-Leu-Ile,…

A: Among the 20 common amino acids, five have a side chain which can be charged. At pH=7, two are…

Q: Part B Consider the partial hydrolysis of the peptide Ala-Ser-Gly-Met-Thr-Val. Sort the smaller…

A: In this question, we will see which Peptide will form or not after partial hydrolysis.

Q: a. histidine b. serine c. aspartate d. valine

A: 1. The oxidation state +2 for iron ion of heme group can be bind to four nitrogen with in a plane.…

Q: 3 how many peptide bonds will result from leaving chimotrypsin in: GAKAIWDLWF

A: Peptide bond are formed when two amino acid reaction and these peptide bond can easily broken by…

Q: Why is the Alanine predominantly zwitterionic at its PI?

A: The PI is referred to the isoelectric point and is a pH of a solution where the molecule is…

Q: Draw the structure of the dipeptide Thr-Cys at pH7. Make sure the following are clearly indicated:…

A: For peptide structure very left one should be N end and very right one should be C end. N end means…

Q: Which of the following amino acids has a net negative charge at pH 7.0? A. glycine B. threonine C.…

A: We need to select the amino acid that has a net negative charge at pH 7

Q: What is the pI for the polypeptide ALRHEN? Use pKa of 8 for the N-terminus and 4 for the C-terminus

A:

Q: Explain why, when the guanidino group of arginine is protonated, the double-bonded nitrogen is the…

A:

Q: What is the predominant form of the following amino acids at pH= 1? What is the overall charge on…

A: The predominant form of the following amino acids at pH= 1 has to be defined. The overall charge on…

Q: At what pH does a 0.02 M solution of Ala-Cys exhibit a net charge of -1.5? The pK, for the a-…

A:

Q: Onch of the sin and amino acids would be negative qF pk = + ? ੬x| () P (3) V c) ੬ ੭) k

A: we need to tell which amino acid is negatively charged at pH = 7