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

Q: amino acid in the form of a "phenylthiohydantoin" (PTH-amino acid), are shown below. What is the…

A: Phenyl isothiocynate is the Edman reagent. It reacts with N-terminal amino acid to give phenyl…

Q: Consider the peptide Lys-Ser-Glu-Cys-His-Tyr. For the drawings requested below,please show in…

A:

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: 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: A) Draw the "standard" base pairs (A:T and G:C) but instead of using the most common form of each…

A: Hi! Thanks for your question. As you have posted multiple questions and have not mentioned which one…

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: Draw the structure Rutinose: -L-rhamnopyranosyl-(16)--D-glucopyranose

A: 2D structure Conformation structure

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: The fatty acid side chains of the phospholipids in the inner mitochondrial membrane exhibit a large…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

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: Draw the following sugars using Haworth projections:a. b-d-galactopyranose b. a-d-tagatopyranose c.…

A: A Haworth projection represents the cyclic shape of the carbohydrate. For sugars with a ring…

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: 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: Look up structures of D-xylose and asparagine and draw a structure of Xyl(beta1->3)Xyl connected to…

A: There are many different types of carbohydrates based on the number of carbon atoms, functional…

Q: The endorphins are a group of naturally occurring neurotransmitters that act in a manner like…

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

A: Carbohydrates are molecules essential for all organisms. It is an important source of energy for all…

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: 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: isomaltose is a disaccharide which can be obtained by enzymatic hydrolysis of amylopectin. Deduce…

A: Disaccharide sugars are the ones that are formed when two monosaccharides are joined by glycosidic…

Q: Histidine is an amino acid with three titratable groups: an -NH3+ group (pKa = 9.2), a -COOH group…

A: As amino acids contain ionizable groups, the ionic form of these molecules in solution rests on the…

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: A pentapeptide on complete hydrolysis yields 3 moles of glycine (R=H), 1 mole of alanine (R=CH3) and…

A: Proteins are the macromolecules composed of amino acids bound together by peptide bond between amino…

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: (a) A decapeptide has the following amino acid composition: Alaz, Arg, Cys, Glu, Gly, Leu, Lys, Phe,…

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

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: 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 keto or enol tautomer for each of the following compounds when they were treated with…

A: 1. Propanol on being treated with traces of acids or bases, its structure is converted to Propanone.…