Which of the following peptides will likely form a loop or turn in a protein and explain why

Q: A polypeptide has a high pI value. Suggest which amino acid residues might comprise it.

A: The isoelectric point (pI) is the pH of a solution at which the net charge of a protein becomes…

Q: What are the FOUR ways that protein function is regulated (function turned ON/OFF).  Explain each.

A: Cells have proteins called receptors these receptors bind to signaling molecules and initiate a…

Q: In some proteins, the side chain of serine appears to undergo ionization. Explain why ionization…

A: Serine proteases like chymotrypsin are most studied biological enzyme and uses covalent modification…

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

A: Peptides or proteins are composed of amino acids linked together via peptide or amide bonds. Protein…

Q: what is the N and C terminal AA residue?

A: DNA sequencing is a biochemical method for determining the order of the nucleotide bases, adenine,…

Q: A polyhistidine-tag or better known by its trademarked name His-tag is an amino acid motif present…

A: In vectors used to produce recombinant proteins, the DNA sequence defining a string of six to nine…

Q: The peptide below is placed into a buffer with a pH = 6.65 HN-CH- CH3 NH-CH- NH-CH -NH -NH-CH- OH…

A: An amino acid's zwitterion exists at pH = isoelectric point. Each amino acid has a unique pI value…

Q: Identify and briefly describe the different PEGylation strategies you can use to PEGylate this…

A: PEGylation refers to the process where polyethylene glycol polymer is chemically added to a protein…

Q: Consider the peptides Ser-Glu-Gly-His-Ala and Gly-His-Ala-Glu-Ser. How do these two peptides differ?

A: Introduction: The organic molecules that contain two functional group that is amino and carboxyl are…

Q: Provide the number of polypeptide chains present and the number of amino acid residues in each…

A: We need to tell how many polypeptide chains are there and how many amino acid residues are found in…

Q: Given the peptide Lys-Glu-Trp  a) Draw the appropriate titration curve for this peptide. Label X…

A: Recall that:Amino acid sequences are written with N-terminal amino acid on the left and C-terminal…

Q: A polypeptide has a high pI value. Suggest which aminoacids might comprise it

A: A polypeptide chain having a high pI value comprise of following amino acids : Lysine, arginine.

Q: What is the net charge at pH 7 on a peptide with the following sequence?…

A: Amino acids are the building blocks of proteins which are composed of amino group (NH3+), carboxyl…

Q: Consider a protein in which a negatively charged glutamic acid side chain (pKa = 4.2) makes a salt…

A: Salt bridges are attractive interactions between two oppositely charged groups. So, more oppositely…

Q: Among these amino acid combinations listed above, only the combination of Lys and Glu have side…

A: The tertiary structure of proteins are stabilized by non covalent interactions like hydrogen…

Q: For a peptide with a sequence listed below. Lys-Gln-Val-Arg-Glu-Phe-His-Asn-Asp-Tyr 1) Estimate the…

A: Peptides are short strings of amino acids, typically comprising 2-50 amino acids. Amino acids are…

Q: Patients suffering from sickle cell anemia have a mutation in the gene that codes for one of the…

A: Sickle cell anaemia is an inherited blood disorder characterised by misshapen and rigid red blood…