Explain how the (±)-lactic acid could be separated into its pure enantiomers by using (R)-1- phenylethylamine as the resolving agent.

Q: Sketch out a structure of tyrosyl-glycyl-lysine at a pH of 13

A: Amino acids are the monomeric unit of polypeptides that give proteins. There are 20 amino acids that…

Q: Sketch the titration curve for the amino acid alanine with pka1 = 2.34 and pka2 = 9.69.

A: Titration can be referred to as the effect of pH on amino acid structure. Titration curve of amino…

Q: In pyrimidine nucleosides the anti conformation predominates because of steric interactions with…

A: Pyrimidine nucleosides have anti-conformation as the oxygen molecule present on the second carbon is…

Q: Which of the following is an anomer of a-D-galactopyranose? CHOH OH H. он он CH,OH OH он H он H H он…

A: Galactose is aldohexose. It is a C-4 epimer of glucose. The cyclic six-membered ring is called…

Q: Propose a scheme to separate and isolate a mixture containing 4-aminobenzoate,…

A: Extraction is a particularly useful way of separating organic compounds if one molecule in the…

Q: G, L, + and – reactions, please tell me whether you would expect there to be a band in the agarose…

A: Agarose gel electrophoresis is a molecular technique used to separate molecules based on their…

Q: What reagents promote cross-linking between acrylamide and bisacrylamide to form polyacrylamide gel?

A: Polyacrylamide gels are used for the separation of biomolecules. The polyacrylamide gels are…

Q: What is the pI value for the dipeptide Gly-Ala?

A: The pI or isoelectric point is the pH value at which the molecule or the peptide carries no electric…

Q: When separated on a polyacrylamide gel, the procedure is abbreviated as SDS-PAGE (Sodium Dodecyl…

A: SDS-PAGE is a biochemical technique, which is used to separate the proteins strictly on the basis…

Q: The reversible isomerization of (2-trans,6-trans)-farnesol into (2-cis,6-trans)-farnesol is…

A: Because, farnesol 2-isomer is a catalyst that will help in the conversion of…

Q: Ferritin is treated with SDS or SDS and b-mercaptoethanol and subjected to polyacrylamide gel…

A: SDS PAGE is used to separate proteins based on their size. SDS is an anionic detergent that imparts…

Q: What is the complete name of the following sugar? но он носн OH Write out the words alpha and beta.…

A: Introduction The above structure consists of a 5-C sugar moiety in the form of a 5-membered ring…

Q: The chemical structure of the tripeptide Met-Gin-Tyr is shown below. H₂N NH₂ Met-Gln-Tyr OH OH I

A: The attachment of covalent and non-covalent bonding of polyethylene glycol or PEG to various drugs…

Q: Why is sucrose a non-reducing sugar with Benedict’s solution while lactose is a reducing sugar under…

A: Benedict's reagent  is a chemical reagent  Sodium carbonate, sodium citrate, and copper sulfate…

Q: Write the one letter code for the oligopeptide Ser-Cys-Ile-Glu-Asn-Cys-Glu and calculate the total…

A: On a logarithmic scale from 0 to 14, pH, or "potential of hydrogen," measures the acidity or…

Q: Saccharide X occurs in the roots of several species of plants. Deduce the structure of saccharide x…

A: Saccharide means sugar. Saccharide is of three types, they are monosaccharide, oligosaccharide and…

Q: Complete the following table by providing the Fischer and Haworth Projections of the given sugars.…

A: Fischer projection is a three-dimensional representation of sugar molecules in an open-chain form.…

Q: Draw the structure of malibiose a sugar found in plants and answer the following question: a) What…

A: Melibiose is a disaccharide composed of two monosaccharide units: glucose and galactose. The linkage…

Q: Draw the two possible Haworth structures (both alpha and beta anomers) for the following…

A: A Haworth projection of the carbohydrates here is to be made which represents the cyclic structure…

Q: Outline the steps needed to synthesize the tetrapeptide Ala-Leu-lle-Gly using the Merrifield…

A: Peptide synthesis of significant length needs many steps. Here, the product needs to be purified…

Q: Which amino alcohol is used in the synthesis of sphingomyelin?

A: Amino alcohol: It is a compound that contains both an Alcohol group (OH) and an Amine group.  It is…

Q: Draw a structural formula for the b-N-glycoside formed between 2-deoxy- d-ribofuranose and adenine.

A: A glycosidic bond is a type of covalent bond that joins a carbohydrate molecule to another group,…

Q: Following are Fischer projections for a groupof five-carbon sugars, all of which are aldopentoses.…

A: Enantiomers are the pair of compounds, which are the mirror image but cant is superimposed on each…

Q: Draw structural formulas for the products obtained when the tripeptide Thr-Leu-Ile undergoes…

A: An amino acid is a chemical molecule that serves as a building block of proteins. There are 20…

Q: Draw the structure of the pentapeptide aspartic acid-serine-lysineUglutamic acidUtyrosine. Assume…

A: Protein is a polymer of amino acids connected together via peptide bond. Protein is the functional…

Q: Nucleotides containing ribose, thymine, and phosphate are not found in ribonucleic acids. Explain…

A: RNA consists of ribonucleic acid, which exhibit ribose, and nitrogenous bases.

Q: Identify the following non-chiral molecule:  NH2-CH2-COOH (dry form) aspartic acid arginine glycine…

A: Amino acids are small molecules made up of carbon, hydrogen, nitrogen and oxygen in some cases…

Q: Hydrolysis of dodecapeptide P with the enzyme trypsin affords the following fragments: Arg,…

A: Trypsin and chymotrypsin are the proteolytic enzymes that can cleave peptide bonds of proteins with…

Q: Xylulose and ribulose are epimer pairs. Please explain why and how to identify epimer pairs

A: Epimers are the simple Sugars that differ in a single chiral centre or in the arrangement of OH…

Q: If thymine nucleotides are degraded by the same enzymes as those catabolizing uridine nucleotides,…

A: The cleavage of the ring structures metabolizes thymine and uracil nucleotides. The usual end…

Q: Identify the structure of O-a-D-sorbopyranosyl-(2 → 4)-B-D-glucopyranose below. The following…

A: The disaccharide of interest here is . Pyranose indicates a 6 membered ring with 5 C and 1 O atom.…

Q: Following are Fischer projections for a group of five-carbon sugars, all of which are aldopentoses.…

A: Chiral molecules can exist in the configurations that are non-superimposable mirror images of each…

Q: Draw the structure of alanylglutamylglycyllysine.

A: Peptides are nothing but small condensation products derived from amino acids. They appear small…

Q: Give the systematic name for the disaccharide shown in the image by selecting the appropriate terms.…

A: Conformation is the different positions a molecule can twist into. Configuration is the arrangement…

Q: Dihydrouracil and β-ureidopropionate (N-carbamoyl–β-alanine) are intermediates in the conversion of…

A: The non-essential amino acid is referred to as beta-alanine. This amino acid produced in the body…

Q: Draw the structure of the disaccharide with a systematic name of: (1→6)-B-1)…

A: Monosaccharides are the simple sugars that cannot be broken down to simpler sugars. These are…

Q: Define the alternative chemical structure of deoxyribonucleic acid which could be copienfaithfully.

A: The Sanger chain termination sequencing method was invented by Sanger to identify the sequence of…