Which of the following is not true about a-amino acids? have at least 2 pka values O negatively charged at pH= 1.0 O most contain one chiral center O can act as buffers

Q: Slightly heating a protein can render it nonfunctional, but a polysaccharide requires a boiling…

A: Proteins and polysaccharides Proteins are molecules composed of adjoining amino acids by a peptide…

Q: Here is a diagram of an amino acid. Explain how the peptide bond is formed between two amino acids.…

A: An amino acid is composed of an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom (-H),…

Q: draw the primary structure of the polypeptide at physiological pH range of 7.35-7.45 put the name of…

A: Polypeptides or peptides are composed of twenty standard amino acids attached together via peptide…

Q: The structure given is

A: Acid is any species, simply an ion or molecule, that can accept electron pair to form a coordinate…

Q: None

A: Loss of exocyclic amino group:This option is correct because the reaction involves the removal of an…

Q: In a solution with pH ~7 most of the amino acids are form zwitterions. Name the amino acids which…

A: Amino acids: a. Amino acids are the building block of proteins that contain a carboxylic acid group…

Q: Which Ami no acids can be found in the following peptide?

A: Amino acids are biomolecules that have a hydrogen atom, an amino group, a carboxyl group and a side…

Q: Which of the following amino acids belaw is not likely to be found in nature? NH NH HS

A: Amino acids are monomer units of proteins. They are organic molecules with certain functional…

Q: How many of each od the following structural features are present in a molecule of glycocholic acid?…

A: Glycocholic acid is also known as cholylglycine and glycine cholate. It is a crystalline occurrence…

Q: Which of the following shows the reaction by which valine and leucine form a peptide bond H. H…

A: Valine and leucine are two amino acids that have branched-chain structures and are essential to the…

Q: When drawing the structure of an amino acid, which of the following statements is true? The amino…

A: Amino acids are biomolecules in which an alpha (α) carbon is bonded to 4  groups. These 4 groups are…

Q: The charge of particular functional groups is dependent on the environment they are in. Predict the…

A: The pKa of the side chains of  amino acid residues in proteins determines the net charge on the…

Q: The tertiary structure of a protein is maintained by interactions between the side chains of amino…

A: Proteins are composed of amino acids, which are bound together by peptide linkage. Amino acids…

Q: The R-group of lysine has an overall positive charge. The R-group of glutamic acid has an overall…

A: Amino acids are small biomolecules and serve as building blocks of proteins. These contain the amino…

Q: first amino acid is R second amino acid is L Draw your dipeptide at pH 7.4

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

Q: Which amino acid will stop closest to the positive terminal in an anode?

A: Amino acids have a tendency to exist as Zwitter ions. A zwitter ion carries both positive and…

Q: What exactly are proteins? What is a protein's building block? What are its chemical properties? How…

A: Since You have asked multiple questions, as per the guidelines we are allowed to answer only the…

Q: You are studying a novel amino acid. It has an alpha-amino and an alpha-carboxylic group, and an…

A: The titration curve of an amino acid shows the change in pH as an acid or base is added to the…

Q: How many amino acid/functional groups have a pKa value? What is the pI of the molecule? What wouls…

A: Amino acids are the simplest units for the production of proteins. They contain at least two…

Q: Which of the following statements concerning the D- and L- forms of a monosaccharide is incorrect? O…

A: Sterioisomers are recognised by L and D forms in monosaccharides.  The D form is dextrorotatory…

Q: Which of the following is incorrect about the peptide Arg-Asp-Cys-Tyr-Gln-Arg-Glu? O a. Its…

A: The peptide given is represented in single letter codes as: RDCYQRE Its structure is:

Q: a) Which pH (1, 7 or 10) would produce the following ionization states for lysine?Th pK of the…

A: The pKa of the ionizable groups of amino acids determine the net charge on the amino acid at a…

Q: Which of the following is true regarding the glycosidic bond between the pentose sugar and…

A: DNA and RNA are nucleic acids composed of nucleotide units. Nucleotides are composed of pentose…

Q: Which of the following statements concerning the peptide NH3-Val-Ala-Gly-Lys-Leu-Gly-Val-Phe-…

A: The given peptide is as: NH4+-Val-Ala-Gly-Lys-Leu-Gly-Val-Phe-Tyr-Ile-COOH This polypeptide has 10…

Q: What do most amino acids have in common with most monosaccharides? O Both contain ionizable groups…

A: Amino acids are the building blocks of proteins. There are 20 major proteogenic amino acids that…

Q: Perform a peptide coupling reaction to connect the two amino acids together plus if any other…

A: Detailed explanation:To perform the peptide coupling reaction for connecting the two amino acids,…

Q: Draw the structure of the peptide KNYPEH  showing every bond and atom (including the hydrogens) in…

A: Peptide- "KNYPEH"K- LysineN- AspargineY- TyrosineP- ProlineE- GlutamineH- Histidine

Q: draw the primary structure of the polypeptide at physiological pH range of 7.35-7.45 put the name of…

A: Proteins are unbranched polymers constructed from 20 standard α-amino acids. They have four levels…

Q: a. What is isoelectric point? (Round your answer to two decimal places, for example: 0.13 or 1.45 or…

A: The isoelectric point (pI) is the pH at which net electrical charge is zero for a molecule. It is…

Q: The chemical structures of the two opposing ends in any polypeptic because: O a. the structures of…

A: A polypeptide is a string of covalently bonded amino acids that has not been folded into a…

Q: The amino acid residue sequence of the hemoglobin beta subunit polypeptide would represent what type…

A: Hemoglobin, the protein present in the red blood cells is responsible for the transport of gases…

Q: draw the primary structure of the polypeptide at physiological pH range of 7.35-7.45 put the name of…

A: Proteins are unbranched polymers constructed from 20 standard α-amino acids. They have four levels…

Q: A protein composed of a single polypeptide contains numerous disulfide bonds. Exposure to a reducing…

A: Proteins are large biomolecules that consist of one or more amino acid chain residues. Biochemists…

Q: Which of the following amino acids would most likely exhibit hydrophobic interaction with…

A: Amino acids containing non polar side chains are called hydrophobic amino acids.  These include…

Q: In a solution at physiological pH, the side chain of a polar basic amino acid bears a charge.…

A: An amino group and an acid group are present in organic molecules called amino acids. Amino…

Q: What is the percent ionization of these amino acids? 1. Aspartame at pH 5.4 2. Glutamate at pH 11.8…

A: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not…

Q: Select the choice that best describes the stereochemistry of the following amino acid, and rank the…

A: Cysteine is one of the 20 standard amino acids that serve as the building blocks of proteins. It is…

Q: In terms of structure and function of a protein why is the lactase enzyme have a optimal pH of seven

A: Enzyme work in optimal pH for proper functioning. It is important to bind with the substrate with…

Q: Which of the following amino acids can interact via ionic/electrostatic interactions with lysine at…

A: The amino acids contain different side chains or functional group (R group) that may be uncharged or…

Q: A peptide has the following sequence:   Glu – His – Trp – Ser – Gly – Leu – Arg – Pro – Gly…

A: Amino acids are organic molecules made of carbon, hydrogen, oxygen, and nitrogen. Amino acids such…

Q: The carboxylic acid functional group (R-COOH) in an amino acid has a pka of about 5. Under which of…

A: The amino acid with a side chain carboxylic group is called an acidic amino acid. Examples of acidic…

Q: Which of the amino acids will nearly always be found buried in the center of proteins? valine…

A: Proteins are the polymers of amino acids linked by the peptide bond (CO-NH). There are 20 common…

Q: Amino acids with ionizable side chains are found in all groups except: negatively-charged…

A: There are four classes of biological macromolecules: proteins, nucleic acids, lipids,…

Q: draw the primary structure of the polypeptide at physiological pH range of 7.35-7.45 and put each…

A: Proteins are unbranched polymers constructed from 20 standard α-amino acids. They have four levels…

Q: A protein has an asp glu/arg lys ratio of 3. Explain how would the overall charge on this molecule…

A: pKa is the negative log of acidic ion concentration and used to denote the acidity or basicity of…

Q: draw the primary structure of the polypeptide at physiological pH range of 7.35-7.45 put the name of…

A: Polypeptides are composed of twenty standard amino acids. These twenty standard amino acids differ…