His-Met-Asp-Tyr-Phe-Ser Calculate an approximate pI (isoelectric point) for this peptide.

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: Three peptides were obtained from a trypsin digestion of two different polypeptides. In each case,…

A:

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

A: When the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing…

Q: reconstruct the peptide sequence. M, 1-Letter Residue 71.0786 R. 156.1870 114.1036 115.0884 103.1386…

A: Solution: The polypeptide chain from N- to C- terminus is as follows.

Q: A decapeptide undergoes partial hydrolysis to give peptides whose amino acid compositions are shown.…

A: There are some selective reagents which are mainly utilized to recognize the sequence of particular…

Q: The three pKa values for this amino acid slycine are 1.9, 7.5, and 10.8. Calculate the isoelectric…

A: The isoelectronic point is the pH at which the amino acid exist in zwitter ion form.

Q: A professor was preparing a manuscript for publication in which she reported that the pI of the…

A: The average of the similarly ionizing groups is the Pl of most of the amino acids that have an…

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: Indicate the peptides produced from cleavage by the indicated reagent: a.…

A: Concept introduction: Amino acids are linked each other by peptide bonds is called protein (one or…

Q: Estimate the pl values of the following peptides: a. Ser-lle and b. Gly-Tyr-Val.

A: The question is based on the concept of biomolecules . we have to calculate isoelectric point for…

Q: Draw the structural formulas of the following peptides, andshow which bond would be cleaved by…

A: The organic or biological compounds in which the carbon atom is bonded to an amine group (NH2), a…

Q: Which of the following reagents can be used to cleave a tert-butoxycarbonyl (Boc) protecting group…

A: Among the many amino protecting groups, one of the most important protecting group is…

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: Cleavage of the following peptide with cyanogen bromide would result in the production of smaller…

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Q: Calculate the pH at which the e-amino group of lysine is 25% dissociated.

A: Step : 1             Calculate the pH at which the e-amino group of lysine is 25% dissociated.

Q: Show how solid-phase peptide synthesis would be used to make Ile-gly-asn

A: The first step of solid-phase peptide synthesis to make ile-Gly-Asn is shown below.

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: 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: A tetradecapeptide (14 amino acid residues) gives the following peptide fragments on partial…

A: So on partial hydrolysis, we will get separate amino acids peptide  chain  To get our main chain we…

Q: Calculate isoelectric point (PI) of the peptide GSTSRASPRM. pKa N-terminus = 9.3; pKa R = 12.5; pKa…

A: The peptide is GSTSRASPRM.

Q: Draw a formula for Thr-Ala-Ala (T-A-A) in its predominant ionic form at pH 7.3. You may assume for…

A: Here we are required to draw the structure of peptide predominant at pH 7.3

Q: Glu-His-Trp-Ser-Gly-Leu-Arg-Pro-Gly The pK₂ values for the peptide's side chains, terminal amino…

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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: Show where trypsin and chymotrypsin would cleave the following…

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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 peptide Ser-Pro-Ser-Arg-Ala-Lys-Gly- Trp-Gly-Phe-Leu-Tyr-Val-Ser-Ala-Ala is fully digested by…

A: Peptide bond cleavages by chymotrypsin

Q: According to this Ramachandran plot, what is the main secondary structure element found in this…

A: The correct option is:

Q: Show how solid-phase peptide synthesis would be used to make Ile-Gly-Asn.2

A: The first step of solid-phase peptide synthesis to make ile-Gly-Asn is shown below.

Q: In a paragraph form provide the experimental procedure of the reaction of oxazetidine-containing…

A: Proteins are composed of amino acids in which amine group of one amino acid linked to carboxyl group…

Q: Which of the following peptides will elute last from a hydrophobic interaction column? A)…

A: From the given peptides we have to determine the peptide that is eluted last using hydrophobic…

Q: A peptide has the following amino acid composition: 2 Met, 2 Phe, 2 Glu, 1 Arg, 1 Lys, 1 Val, 1 Leu,…

A: Amino acid are biomolecules which will have both acid group and basic group  We are required to find…

Q: Match the products with the relative amounts that would be formed from complete hydrolysis of the…

A:

Q: 1. In Part II of the Procedure, you were instructed to use your original mixture of phycocyanin and…

A: A buffer is an aqueous solution which when mixed with other solutions helps in resisting the pH of…

Q: A Write the structure of the pentapeptide GL B. What is the complete name of this pentapeptide? Show…

A: A) Pentapeptide GLDSC contains five amino acids i.e, glycine, leucine, aspartic acid, serine, and…

Q: In a variation of the Merrifield solid-phase peptide synthesis, the amino group is protected by a…

A: In organic chemistry, protecting groups are used to protect a molecule so that it can’t participate…

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

A:

Q: 1 2 peptide #1 hydrogen bond 26 residuesturn peptide #2 beta pleated sheet 3 Random coil a-helix 26.…

A: Structure 1 is of DNA . Structure 2 is beta pleated sheets . Structure 3 is of protein .

Q: Which peptides is more likely to take up on alpha-helical structure? Explain. Top:…

A: The alpha-helical structure is the right-hand helix conformation present in the secondary structure…

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

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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: Show the steps in the synthesis of the tetrapeptide Leu-Phe-Ala-Val, using Merrifield’s method.

A: Amino acids are linked each other by peptide bonds. Peptide bonds are amide bonds, in which carbonyl…

Q: Decide if the side chains of the following peptides are nonpolar or polar, and label the hydrophobic…

A: Non-polar amino acids are hydrophobic in nature and polar amino acids are hydrophilic in nature. (a)…

Q: Amino Acids and Proteins 1. What are the structural features of amino acids with an emphasis on…

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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: Report the isoelectric point of the peptide, Gly-Asp-Lys-Ile?

A: Solution -

Q: Three peptides were obtained from a trypsin digestion of two different polypeptides. indicate the…

A:

Q: Estimate the net charge of the polypeptide chain Ala-Arg-Val-His-Asp-Gln at physiological pH and at…

A: The given polypeptide chain is Ala-Arg-Val-His-Asp-Gln. The structure of the polypeptide…

Q: His-Met-Asp-Tyr-Phe-Ser within this peptide, which amino acid residue is the most hydrophobic and…

A: Hydrophobic amino acids are those with side-chains that do not like to reside in an aqueous…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.