What is absolute configuration of L-threonine?

Q: Write structural formulas for the two dipeptides that contain leucine and aspartate.

A: A peptide is the sequence of amino acids which is joined through peptide or amide bond in which…

Q: Which structure represents d-erythrose?

A: erythrose is a carbohydrate it is made up of carbon,hydrogen and oxygen. carbohydrates are of many…

Q: Draw the structure of the tripeptide alanylglycylvaline and determine its name using three-letter…

A: The amino acids are the building blocks of proteins. Proteins are produced by the translation…

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: How many charged functional groups will be found on serine at physiological pH?

A: The chemistry of amino acids is complicated because there is a -NH2 group, which is a base and a…

Q: What is the structure of the peptide P-A-I-G-E at a pH of 7 and 12? What is the isoelectric point?

A: Peptides are composed of amino acids that are bonded to each other via peptide bonds. The ionizable…

Q: What are the difference between thymine and guanosine?

A: Thymine is a nucleotide. Guanosine is a nucleoside.

Q: What is the net average charge on the predominant form of lysine at pH values of (a) 2.0, (b) 5.0…

A: Amino acids are organic compounds having carboxyl group and amino group. At extreme low pH, amino…

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: Draw the structure of the peptide: Val-His-Leu-Thr-Pro-Val-Glu-Lys-Ser-Ala-Val-Thr

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

Q: What is the structure of the intermediate formed during the conversion of dihydroxyacetone phosphate…

A: Introduction: The metabolic pathway by which glucose converts into ATP and pyruvate is known as…

Q: What are the structural differences between (a) purines and pyrimidines, and (b) ribose and…

A: a) Structural differences: [purines & pyrimidines]         The purines structure comprises of…

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: What is neomycin phosphotransferase (designated neor)?

A: Antibiotics are prescriptions that battle bacterial diseases in individuals and creatures. They work…

Q: How do the functional groups of rilpivirine add to its function in the human body? How does…

A: Rilpivirine is used in the treatment of HIV, sold under the trade name Edurant. The drug non…

Q: Which form of aspartic acid in Problem 18.54 is the zwitterion? What is the pI for the zwitterion?

A: Zwitterion = At a particular pH, an amino acid carries both positive and negative charges and is…

Q: Which of the following is a property of both D-altro O They are found in sucrose. O They are major…

A: Monosacharides are the monomers of Polysaccharides that are joined by Glycosidic bonds .…

Q: What is the structural difference between the monosaccharides glucose and galactose?

A: Monosaccharides are the simple sugar, that can not be hydrolyzed. Monosaccharides have the general…

Q: What effect on the overall structure of hemoglobin in the presence and absence of oxygen did the…

A: The hemoglobin (Hb) molecule is an essential component present in the red (RBC) blood cell, which…

Q: How many chiral carbon atoms are there in each of the two parts of the repeating unit in heparin (p.…

A: Heparin is used to treat and prevent blood clots that are caused by certain medical conditions or…

Q: Is the nitrogenous base a pyrimidine or purine? How do you know?

A: The nitrogenous bases are classified into purines and pyrimidines.

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: Draw the Haworth projection of β-D-Altopyranose given the structure of D-Altrose.

A: Altrose is an aldohexose. Altrose is a C-3 epimer of mannose. The Fischer projection shows the open…

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: Starting from glutamine ,glycine, aspartate, N-10 formal-ThF ,how many ATP equivalents are required…

A: Glutamine : It is the most abundant amino acid in the body.It is synthesized in the  muscles and the…

Q: How could you make the zwitterion of aspartic acid more soluble in water?

A: A zwitterion is considered as a chemical compound, which has both charges positive as well as…

Q: What are the major three forms of deoxyribonucleic acid?

A: The X ray studies of DNA crystals has revealed that DNA has more structural diversity at atomic…

Q: Why is the structure of ornithine so similar to the structure of citrulline?

A: Ornithine is basically an amino acid that is usually not coded by DNA. Citruline is a non essential…

Q: VizamylTM is used in brain scans for Alzheimer’s disease. Draw the structure of VizamylTM and…

A: VizamylTM is a molecular agent used in imaging the aggregates of β amyloid in the brain. It contains…

Q: I have an aqueous solution of tyrosinase but I require the solid form of tyrosinase.   How would you…

A: Tyrosinase is an enzyme which is present in plant and animal tissues. Tyrosinase catalyzes the…

Q: Draw the structure of Pro-Leu-Glu at physiological pH (7.4).

A: Amino acids have two functional group namely carboxyl group and amino group. Carboxyl group is…

Q: What would be the characteristics of a transition-state analog for the chymotrypsin reaction?

A: Introduction: Enzymes are proteins that act as a catalyst which means they increase the rate of…

Q: What is the Haworth projection for D-Ribulose? And L-Ribulose?

A: Ribulose is a simple sugar and a ketopentose, which means it contains five carbon atoms and a ketone…

Q: How does proline stabilize cis-configuration of a peptide bond, and why is this cis-configuration…

A: Secondary structure of protein: Formed due to twisting of polypeptide chain.The folding is due to…

Q: What are the sources of the carbons and nitrogens in thepurine bases?

A: Biomolecules are organic molecules that function in metabolic pathways. The metabolic pathways are…

Q: Threonine has two chiral centers. Draw L-threonine and indicate which carbon atoms are chiral. Which…

A: Threonine was a  polar and uncharged amino acid. where the polarity was contributed by the hydroxy…

Q: Draw the titration curves for the following AA’s: Aspartic acid, Alanine, Lysine, Valine, Serine,…

A: Hi! Thank you for the question. As you have posted a question with multiple subparts, I will be…

Q: Is the methyl group at the junction of rings A and B axial or equatorial to ring A? Is it axial or…

A: Cholic acid is insoluble in water. It is white in color and crystalline in nature. It is used for…