Methionine is an essential amino acid that can be metabolized to homocysteine. Using the figure below, describe the R-group on homocysteine and how it differs from methionine.  Include the functionality of the thiol as part of this discussion.

Q: The diversity of functional groups on sugars that can form glycosidic bonds greatly increases the…

A: Amino acids are the organic acids that contain alpha carboxyl group, alpha amino group, hydrogen…

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: After a polypeptide chain has been synthesized, certain amino acids in the peptide may become…

A: The modified amino acid shown in the structure you provided is serine (Ser).The modification that…

Q: Amino acids can be prepared from a-halo carboxylic acids [RCH(X)COOH] by reaction with excess NH3.…

A: Amino acids are the organic acids that contains an amino group, carboxyl group, hydrogen atom, and…

Q: Write the following oligopeptide using the one letter code for the amino acids: Cys-His-lle-Leu-Glu…

A: One letter code has been assigned to each and every amino acids and is often used to represent the…

Q: A pentapeptide has a titration curve that shows five inflection points for five equivalents of…

A: Amino acids contain ionizable groups. The ionic form of the amino acids depends upon the pH of the…

Q: HN- CH H2N-CH-c-OH HaN — сн—с— он | Н-N— сн—с—он CH2 CH2 ČH2 CH2 CH2 CH2 NH2 ÓH A B D H2N-CH-C. -ОН…

A: Aminoacids are the building blocks of proteins. They have two functional groups along with side…

Q: Consider the structures of arabinose and ribose. Explain why nucleotide derivatives of arabinose,…

A: Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as…

Q: Many bioactive compounds are derived from amino acids. This compound, found in trace amounts in…

A: Amino acids are the molecules that join to form a protein structure. The bond formed between two…

Q: Write the structure of UDP-N-acetylglucosamine and UDP-galactosamine.

A: UDP-N-acetyl (UDP-GalNAc) glucosamine and UDP-(GalNAc) galactosamine are the amino sugar of…

Q: Define aminoacyl (A) site

A: Hence, the A-site (A for aminoacyl) of a ribosome serves as a binding site for charged t-RNA…

Q: Draw the structure of the a-keto acid formed by removal of the amino group during the catabolism of…

A: So, the structure of the α-keto acid after deamination of cysteine is 3-sulfanylpyruvate:…

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) 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: 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: Name all the amino acids that cannot exist as zwitterions. Please explain.

A: The amino acid is amphoteric in nature, which means they can react with acid as well as bases. The…

Q: Two of the 20 common amino acids have two chiral carbon atoms in their structures. Identify these…

A: Amino acids are organic molecules having a center chiral carbon except for glycine, attached to four…

Q: Name the two different glycosidic linkages.  Are these the same linkages as those found in glycogen?

A: Hyaluronic acid is a non- sulfated glucosaminoglycan (GAG).

Q: Draw the Ala-Ser-Leu-Asp polypeptide (perspective formula) showing the fully extended backbone…

A: Proteins are folded peptides. Peptides are polymers made up of amino acid residues linked via a…