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

Q: Structures 1-3 are ___. Stabilized by hydrogen bonding The result of protein amino acid sequences…

A: This question is related to amino acid.   Structure 1 is an example of alpha helix. Structure 2 is…

Q: Draw the bond-line structure of the given peptides 4. Ala-Val-Ser 5. Glu-Gln-Gly 6. Cys-Gly-Asn

A: A question based on molecules that is to be accomplished.

Q: Consider the following peptide : Phe – Glu – Ser – Met and Val – Trp – Cys – Leu. Do these peptides…

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Q: Write the structural formula (flat projection) of the dipeptide glycyl-phenylalanine (Glycine is the…

A: When the OH group of one amino acid and H of amine group of another amino acid condensed to give a…

Q: What is the significance of the following peptide:…

A: Peptide bond: It is the bond formed between two amino acids.

Q: lonization State of Histidine Each ionizable group of an amino acid can exist in one of two states,…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: What amino acid is at the N-terminus of the following peptide? CO2 H3N

A: Given : Peptide chain  To find : Amino acid present at N terminus Solution: Amino acids are those…

Q: What is the amino terminal residue? What is the carboxyl terminal residue? How many amino acid…

A: as per the policy guidelines we are here to solve first three questions only. amino acids are the…

Q: Write the structures of the peptides given below. 1. Pro-His-Ala 2. Met-Cys-Tyr

A: A peptide bond is an amide-type bond between two amino acids. An amino acid contains amino and…

Q: Consider a peptide: Glu-Glu-His-Trp-Ser-Gly-Leu-Arg-Pro-Gly-His If the pKa values for the…

A: If the pH of the solution is greater or equal to the pKa of side chain then the side chain will be…

Q: For a globular protein, the core of the protein is generally populated by charged v amino acids,…

A: Answer  For a globular protein the core of the protein…

Q: Proline is the only naturally occurring amino acids that can exist in two conformational states…

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

Q: 5. Arg and Lys Asp and Lys Pro and Glu Among these amino acid combinations listed above, only…

A: Answer: Only the combination of Asp and Lys have side chains with groups that have the greatest…

Q: Draw the structure of the tetrapeptide Asp-Arg-Val-Tyr. Please show the appropriate stereochemistry…

A: Amino acids are the substances which contains a carboxylic group(-COOH), an amine group(-NH2), a…

Q: The lack of an asymmetric carbons and ease of rotation make glycine rich protein sequences: a.…

A: Amino acids are carboxylic acids having an amino group. Amino acids form polymers known as peptides…

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

A: Given amino acid is glycine.  pKa1 is given as 2.34 and pKa2 is given as 9.60.  Concentration of…

Q: 1. Draw the bond-line structure showing the zwitterionic form of each of the following amino acids:…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

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: Use three-letter amino acid abbreviations to give the sequence of amino acids in this polypeptide.…

A: Answer:- This question is answered by using the simple concept of naming of a polypeptide using the…

Q: draw the primary structure of the peptide DKMMS at pH 7.4 and name this peptide and what chain…

A: Primary structure of a peptide refers to the amino acid sequence in the peptide.

Q: the structure of isoleucine and determine the charge on a molecule in a(n) a. Acidic solution (pH =…

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Q: Be sure to answer all parts. Part 1 out of 2 (a) Draw the structures of the two possible dipeptides…

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Q: What trend can you suggest for the stability of proteins under varying pH

A: As we decrease the pH (by adding acid ) converts COO- ion to a neutral COOH group. In each case the…

Q: decapeptide has the following amino acid composition: Ala2 , Arg, Cys, Glu, Gly, Leu, Lys, Phe, Val…

A: The tripeptide has lysine as N-terminal. Now writing all these tripeptide in such a manner that…

Q: 2.) An unknown amino acid was subjected to paper chromatography with five amino acid standards in…

A: Paper chromatography -  Is partition in which the various components  get distributed between…

Q: H3N 'N' NH 'N- CONH20 HOOC HN N. HOOC. 'N' H. N. HN HO, NH COOH N. NH2 HO How many of the amino acid…

A: Amino acids are those compounds which contain amino (NH2- ,or -NH-  ,or -N= ) group and carboxylic…

Q: Which representation of the amino acid lysine would exist at a pH less than the isoelectric point?…

A: Given amino acid,

Q: If an amino acid had the following side chain it would be identified as polar CH2 - OH A) True B)…

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Q: considering the following peptides: Phe-Tyr-Ala-Lys-Glu-Asp at pH 7, the net charge of the peptide…

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Q: Calculate the net charge of this oligope tide at pH= 1, pH=7 and at pH=14 (Lys-Arg-Asp-Glu-Ala)?…

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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: Determine the net charge of the following tri-peptides at pH 7.

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

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Q: The peptide segment shown below is part of a right-handed alpha helix. Please indicate the hydrogen-…

A: There are 4 types of structure of protein-  1- primary 2- secondary 3- tertiary 4- quaternary For…

Q: Following is the structure of a peptide with the name seryllysylaspartate. What is the amino acid at…

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Q: In the following peptide, which amino acids would be D chirality? HO. HS NH3 ООС ZI IZ ZI

A: D chirality  represents S configuration.

Q: Indicate which of the amino acid residues in the following peptide sequence contains a group that…

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Q: What amino acid is the N-terminus of the peptide below? OH O H3N. N A) Valine B) Serine C) Alanine…

A: option A is correct that is Valine.

Q: Consider the structures of the two amino acids below. Draw a dipeptide (peptide made from two amino…

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Q: The amino acid (S)-alanine has the physical characteristics listed under the structure. What is the…

A: Racemic mixture is made by mixing equal amount of (R) and (S) isomers. Thus the optical rotation…

Q: What is the charge of the following peptide at pH = 5.9? Ala-Val-lle-Leu-Met-Trp O -1 +2 +3 O +1

A: Firstly, the structure of polypeptide was drawn. The polypeptide is the long chain of amino acids…

Q: Which has a higher percentage of negative charge at physiological pH (7.4), leucine with pI = 5.98…

A: When an amino acid is placed in a solution which has a pH that is lower than the pI then the amino…

Q: For aspartic and glutamic acids, the isoelectric point occurs at a pH where the net charge on the…

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Q: Using the 3-letter symbols for amino acids, write out the sequences that would result if the peptide…

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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-…

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Q: Almost all proteins are composed from a set of about _____ amino acids. a. 4 b. 10 c. 20 d. 50

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.