What is the charge of this peptide at pH 1.5?

Q: The peptide with sequence GVPLT has antioxidant properties.    Draw the chemical structure of this…

A: A polypeptide is a long-chain polymer, which is made up by joining several amino acids.

Q: Draw a peptide containing ELPT amino acids at pH 7 and label the phi and psi bonds. What is the…

A: Proteins are important biomolecules made of amino acids. The amino acids are joined together with…

Q: What is the difference between the structures of the following two peptides: Name them.…

A: There are 20 standard amino acids that make up all the proteins inside the cell. The amino acids are…

Q: Why are salt bridges (ionic interactions) in proteins sensitive to pH?

A: Salt bridges : A salt bridge or ion bridge in electrochemistry, is a laboratory device used to…

Q: At pH-4, what is the net charge of the peptide GKPAD? O+0.5 O-1.0 Oo -0.5

A: The sequence of the given peptide is as follows: Gly-Lys-Pro-Ala-Asp The amino acids are composed of…

Q: What is the isoelectric point for the peptide STVWY at pH 13? Draw the structure. Connect the…

A: The isoelectric point of a protein can be defined as the pH at which the net charge of the protein…

Q: Which peptide has a larger pI? Arg-Gly-Gly-Gly or Gly-Gly-Gly-Arg   why?

A: Proteins are composed of amino acids, which are bound together by peptide linkage. Amino acids…

Q: HENRY is a peptide sequence.  1) Draw the structure of the HENRY peptide as it exists at pH 7. Be…

A: Peptides are composed of amino acids joined to each other via peptide bonds. Peptides can have one…

Q: Peptide ionization Consider a peptide with the sequence Ser-His-Glu-Cys-Arg-Gln. You will be asked…

A: The net charge of the each amino acid residue in a peptide is determined by the side chain pK of the…

Q: draw the primary structure of the polypeptide at physiological pH range of 7.35-7.45 using…

A: The primary structure of the polypeptide at physiological pH range of 7.35-7.45 using condensed…

Q: 1: QAMGRAGDLKYLGLHSV Peptide 2: ALMALFMVMALVLVSVLFIA Peptide 3: MVEDLLKQIARYLISE (a) Circle all of…

A: We are authorized to provide three sub parts at a time; since you have not mentioned which part, we…

Q: K₁ = α [H+][A-] [HA] [A-] pH = pK+log [HA] 1-1 The Amino acid Arginine ionizes according to the…

A: The isoelectric point (pI) is the pH at which a particular molecule or surface carries no net…

Q: w the polypeptide T-R-I-P at pH of 7. Label each residue with the 3-letter code, el the N- and…

A: In a polypeptide chain N terminus is formed by amino group. C terminus  Is formed by carboxyl group

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: 2.2 Aspirin reacts with the amino acid Serine. What is the structure of serine? Draw the structure…

A: The proteins are biological macromolecules that are composed of twenty naturally occurring amino…

Q: Draw the structure of VEDMN at pH 12. What is the isoelectric point of the peptide (show how you…

A: Given peptide is composed of five amino acids so it will be called pentapeptide. The amino acids…

Q: Where is the N-terminus of this peptide? Left Middle Right b) What type of secondary structure is…

A: The primary structure of a polypeptide ( or simply a peptide) is its amino acid sequence from the N…

Q: What is the principal form of arginine at pH 8.0? Approximately what fraction is in this form?

A: Arginine is a basic amino acid which contains an alpha amino group, an alpha carboxylic group and a…

Q: A mixture of three peptides is provided to you. The sequences of the three peptides are known: 1.…

A: Proteins are complex, high molecular weight biopolymers made up of 20 different amino acids linked…

Q: A fragment of a protein commonly found in food was sequenced and found to have the sequence: RDCEHKY…

A: The four types of biological macromolecules are proteins, nucleic acids, lipids and carbohydrates.…

Q: a peptide has the sequence: Asp-His-Tyr-Asn. What is the net charge on this molecule at pH 7.2?

A: Given peptide has the sequence Asp-His-Tyr-Asn. The net charge on this peptide depends upon the pKa…

Q: a peptide has the sequence: Asp-His-Tyr-Cys. What is the net charge on this molecule at pH 7.0? Will…

A: A polypeptide chain is a long, continuous chain of amino acids that are covalently linked together.…

Q: What is the molecular basis for the observation that the overall charge on a protein becomes…

A: Hydrogen ions, are required in various chemical and biological processes. The available level of…

Q: At what pH does peptide the His-Arg have a net charge of +1.7?

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

Q: What is the net charge on the peptide RHTLE at pH 12.5?

A: Amino acids have ionizable groups in them. All ionizable groups have their characteristic pKa…

Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.