What are proteins? What type of bonds is responsible for the formation of proteins? Provide an illustration to the second question. What are amino acids? Provide an example of the following by providing their amino acid name and structure: Aromatic amino acid Acidic amino acid Basic amino acid Phenolic amino acid Sulfur containing amino acid

What are proteins? What type of bonds is responsible for the formation of proteins? Provide an illustration to the second question. What are amino acids? Provide an example of the following by providing their amino acid name and structure: Aromatic amino acid Acidic amino acid Basic amino acid Phenolic amino acid Sulfur containing amino acid

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter2: Chemistry Of Life

Section: Chapter Questions

Problem 7RQ: Describe the four levels of protein structure. How do a proteins side groups influence its...

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Find a protein of your choice (rcsb.org), choose a part of it (containing at least 30 amino acid residues), find the amino acid sequence (sequence in it), identify what functional groups the amino acid substitutes contain (carboxyl group and 2-position the Nitro group will form amide bonds, forming the covalent basic structure of the protein). What different interactions can occur between these functional groups? How will it relate to the spatial structure of the protein?
Describe as completely as possible, the four levels of protein What type of bonds hold a protein together at the primary level? What type of bonds maintain the protein at the secondary and tertiary level? Give an example of secondary, tertiary, and quarternary level proteins. At which level is the protein functional? What happens (at a molecular level) when a protein is denatured?
Draw one sample structure of the following types of amino acids: acidic amino acid, basic amino acid, non-polar amino acid polar, uncharged amino acid.
Name and discuss the non-covalent interactions that maintain protein structure. Explain the chirality of amino acid molecules.
In general, proteins can be classified into 3 different groups. Name and give a short description of each type and how they are distinct from one another. Provide an example of macromolecule or other complex structure representing each of the three types.
Amino acids are the building blocks for proteins in the cell. The structures of the amino acids glutamate (or glutamic acid), glycine, and leucine are provided below in the same order from left to right. Map any chiral centers with a 1.
Describe the amino acid illustrated above (at pH = 7.0). (the following amino acid at pH = 7 (aqueous form): (COO-)–CH(NH3+)–CH2–(COO-)) it is a non-polar, positively-charged amino acid it is a polar, positively-charged amino acid it is a polar, uncharged amino acid it is a polar, negatively-charged amino acid it is a non-polar, negatively-charged amino acid
Identify the following features of this phospholipid, which is needed for the brain and nerve tissues: Is the phospholipid formed from glycerol or sphingosine? What is the fatty acid? What type of bond connects the fatty acid? What is the amino alcohol?
What amino acid is technically not an amino acid and which amino acid contains no chiral carbon atoms?
Describe the amino acid illustrated here (Identify the following amino acid (at pH = 7.0): (COO-)–CH(NH3+)–CH2–CH2–CH2–CH2–(NH3+)) (at pH = 7.0). it is a polar, negatively-charged amino acid it is a non-polar, negatively-charged amino acid it is a polar, positively-charged amino acid it is a non-polar, positively-charged amino acid it is a non-polar, uncharged amino acid
In the following diagram of a portion of a protein, label the types of interactions that are shown. What level of protein structure are these interactions producing? ____________________
The common amino acids are polyprotic acids. All amino acids contain an amino group and a carboxyl group. Some amino acids contain ionizable side chains. The presence of an ionizable side chain creates a third ionizable group. For a diprotic amino acid such as glycine (structure shown below), three forms are possible. These forms, the fully protonated (AA*), single deprotonated (AA°), and completely deprotonated (AA) exhibit different acid-base properties. NH;+ NH,+ NH, Neutral H,A (AA+) A- (AA•) (AA-) The Ka describing the AA* and the AA° equilibrium is 4.57 x10-3, while the Ka involving AA° and the anionic form AA- is a much smaller 2.51 x 10-10, The neutral form, AA° is referred to as isoelectric glycine. All amino acids can assume the isoelectric form under proper conditions. a. Calculate the pH of a 0.1 M solution prepared from the salt glycine hydrochloride (hint: use ICE table).