What is the stereochemical basis of the observation that D-aspartyl-D-phenylalanine has a bitter taste, whereas L-aspartyl-L-phenylalanine is significantly sweeter than sugar?

Q: The distance between the porphyrin plane and proximal histidine is longer in T-state than that in…

A: Answer- In Tensed state iron exist as +2 oxidation state i.e iron have larger size due to which…

Q: Which of the following compound possess a steriogenic center: C6H14 C4H10 O C5H12 C7H16

A: 3-methylhexane is the simplest alkane that possess the stereogenic center in its structure.

Q: Which among the statements below explain(s) why fructose gives a positive result to the Tollen’s…

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Q: The 1H NMR spectrum of d-glucose in D2O exhibits two high-frequency doublets. What is responsible…

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Q: Draw both enantiomers of each amino acid and label them as D or L: (a) methionine; (b) asparagine

A: The enantiomers of amino acids methionine and asparagine has to be drawn and labelled as D (or) L.

Q: What is the principle behind the isolation of albumin?

A: Albumin is the water soluble protein. It is isolated by salting out techniques.The principles…

Q: The structure below is a ____________.       cerebroside     monoglycosyl ceramide…

A: Cerebroside is a glycosphingolipid found in muscle cells.

Q: Heterocyclic groups in haemoglobin,morphine, caffeine and folic acid

A: If one atoms other than carbon in the ring is present than the compound is called heterocyclic in…

Q: Draw the three-dimensional structure of the diastereomer formed when (S)-(–)-α-phenylethylamine is…

A: The structure of (S)-(–)-α-phenylethylamine is as follows

Q: Compare the structures of estrone and progesterone. (a) Identify the differences in the A ring of…

A: The structures of estrone and progesterone are drawn below

Q: The a-dextro-glucopyranose can be converted to a- levo-glucopyranose by racemase. True False

A:

Q: The tartaness of some wines is high concentration of l malate.write a consequence of reactions…

A: Under anaerobic conditions means absence of oxygen, yeast will utilize carbon dioxide to ferment.…

Q: composition

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Q: Is either dopamine or epinephrine chiral? If so, what is the center of chirality?

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Q: Isoleucine is among the twenty amino acids found naturally in the human body. Assign R or S…

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Q: How many stereogenic centers does Histidine have?

A: Stereogenic center is also known as chiral center which is carbon that has four different groups…

Q: b) How many reducing and non reducing does O- a-D-glucopyranofil(l ➔2)BETA -D-fructofuranoside has?…

A: Introduction: We have to tell number of reducing and non-reducing sugars in…

Q: Identify and assign the stereocenters using R and/or S in Ana toxin-a and anatoxin-a(S)

A: Anatoxin-a:

Q: Draw the structure of the expected product when monosaccharide A undergo mutarotation upon…

A: Tollens reagent is ammonical silver nitrate solution it is used in the detection of aldehydic group…

Q: What is the configuration about each of the asymmetric centers in aspartame?

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Q: Draw the structure of the expected product when monosaccharide A undergo mutarotation upon…

A: In this question, first step is ring opening because when we adding water on it then it's showing…

Q: Using the generated linear equation: y = 0.7802457x - 0.0127078, calculate the concentration of free…

A: Given: y = 0.7802457x + 0.0127078 for linear curve of absorbance  (Please note that the intercept is…

Q: What product is expected to be formed when codeine is treated with PCl5?

A: Given statement: Codeine is treated with PCl5

Q: 1A) Draw a peptide solely derived from L- amino acids. 1B) Note all stereocenters and assign R,S…

A: Isomers are the species that have the same molecular formula but due to differences in the molecular…

Q: Draw a Fisher Projection of D-Glucose, Haworth Projection of α-D-Glucopyranose and a phosphate ester…

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Q: Draw the other three stereoisomers of L-isoleucine, and label the stereogenic centers as R or S.

A: Stereoisomers are the one in which the two compounds have the same molecular formula but they differ…

Q: Is gentiobiose a reducing sugar? Does it mutarotate? Explain your reasoning

A: Gentiobiose is a naturally occurring carbohydrate. It is composed of two glucose units which are…

Q: Draw the structure of β-D-tagatofuranosyl-(3→4)-α-D-lyxofuranoside

A:

Q: would chymotrypsin to be most active at a pH of 4.5, 7.8, or 10.0?

A: Chymotrypsin is an enzyme which is used for the digestion of protein. This enzyme is secreted by the…

Q: a. What is the specific rotation of (R)-(-)-monosodium glutamate? b. What is the specific rotation…

A: The specific rotation of a molecule is defined as rotation in degrees observed upon passing…

Q: Why does the proton of the hydroxyl group in benzoin appears at 6.1 ppm in DMSO-d6 while it shows at…

A: Solution -

Q: What is the stereochemical result of the Strecker synthesis of the amino acid alanine? NH3* CH3-C-H…

A: The correct option is (D): a racemic mixture

Q: what are the stereogenic centers of captopril and why

A: Stereogenic centers are those carbon centers at which 4 different groups are attached.…

Q: what is the Pka of Lynestrenol ? with illustration

A: The structure of Lynestrenol is :

Q: What is the stereochemical basis of the observation that D-aspartyl-D-phenylalanine has a bitter…

A: The chemical structure for D-aspartyl-D-phenylalanine and L-aspartyl-L-phenylalanine are shown…

Q: Is DL-Homocysteine soluble in ether?

A: According to the like dissolves like principle, polar solute exhibit high solubility in polar…

Q: Although only l-amino acids occur in proteins, d-amino acids are often a part of the metabolism of…

A: Given that only L-amino acids occur in proteins. All natural occurring proteins consist of L amino -…

Q: What would be the haworth projection of a beta D-aldohexose carbohydrate?

A: D-aldohexose is basically a 6 carbon membered carbohydrate with aldehyde group having its last…

Q: Use an asterisk to identify the stereogenic center in the segment of phosphatidylethanolamine shown…

A: Given,  Structure = Phosphatidylethanolamine  Identification the stereogenic center = ?

Q: iven the figure of tallose, give the figure of its alpha-D tallopyranose and beta-D tallopyranose

A: Tallose is the organic sugar that is soluble in water. It is a monosaccharide carbohydrate.

Q: A mixture containing equimolar quantities of a pair of enantiomers is called a RACEMIC MIXTURE. A…

A: Given: To explain how a racemic mixture of alanine is represented.

Q: please help me draw the Fischer projection and Haworth's Projection of this: α – D - Allopyranoside

A: D-Allose is carbohydrate having chain of 6 carbon atoms.

Q: Gramicidin S, a topical antibiotic produced by the bacterium Bacillus brevis, is a cyclic…

A: The given structure of gramicidin S is formed from five different amino acids. These five amino…

Q: Explain why cyanogen bromide does not cleave on the C-side of cysteine

A: Cyanogen bromide is usually used to cut the proteins at the methionine residues. It is used to break…

Q: What would be the structure of the two anomers of idopyranose in HAWORTH FORMULA? a. its beta-anomer…

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Q: Although tryptophan contains a heterocyclic amine, it is considered a neutral aminoacid. Explain why…

A: In tryptophan structure, nitrogen has lone pair of electrons but that electron is involved in…

Q: Explain why, when the guanidino group of arginine is protonated, the double-bonded nitrogen is the…

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Q: Write out a scheme for the resolution of the two enantiomers of theantiplatelet drug clopidogrel…

A: The stereogenic center of clopidogrel and 10-camphor sulfonic acid structure is given in picture 1.

Q: How to show the cyclization of frontalin

A: The reaction through which a compound is converted to an aromatic compound through several steps is…