can derive nourishment from eating clothing made of natural fibers such as wool (which is rich in a-keratin). The digestive tract of the larvae of clothes moths provides a highly reducing environment. Why is this beneficial to the larvae? The reducing environment will reduce the disulfide linkages, making it easier to digest the proteins. The reducing environment will hydrolyze the peptide bonds. The reducing environment will interfere with the H-bonding between the tropocollagen molecules, making the type of protein found in most natural fibres easier to digest. The reducing environment will help to kill bacterial pathogens. The reducing environment will detoxify the carcinogenic dyes used in the textile industry.

Q: Classify each peptide chain as part of a parallel β sheet, part of an antiparallel β sheet, either…

A: Beta-sheets are one of the most common secondary structures seen within proteins. Several…

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: The potential below is a hemogoblin, It has four subunits - each shown in a different color. Each…

A: Hemoglobin is a protein found in red blood cells, allows oxygen to be transported within blood from…

Q: (c) Outline how you would investigate whether BCMAP would be an effective inhibitor for the protein…

A: Inhibitors are the molecules that slow down or completely block the protein activity of molecules,…

Q: The first protein structure to have its structure determined was myoglobin from sperm whale. Propose…

A: Myoglobin is an iron and oxygen binding protein found in skeletal muscle tissue of vertebrates and…

Q: It is maintained by a bond with resonance structures. It will be disrupted by extreme pH conditions.…

A: A protein's biological function depends on its three-dimensional structure. The 3D structure is…

Q: Upload a drawing of Gly-Met-Asn-Glu-His  Label the alpha carbons  Label the R groups as…

A: Alpha carbon: It is the carbon connecting the amino group and carboxylic group in amino acid. Acidic…

Q: Blueberries have proanthocyanidins, which contain catechin monomer, dimer, and trimer, and polymers…

A: Cells produce lots of oxidants and acidic components when they are performing metabolism.…

Q: At pH-4, what is the net charge of the peptide GKPAD? O+0.5 O-1.0 Oo -0.5

A: The sequence of the given peptide is as follows: Gly-Lys-Pro-Ala-Asp The amino acids are composed of…

Q: When answering the questions below, please use the one-letter code for the amino acid, with NO…

A: Acid hydrolysis: Acid hydrolysis of any protein/polypeptide is being used to detect amino acids…

Q: Combustion of glucose (C6H12O6) is the main source of energy for animal cells: -> + C6H12O6s 602g +…

A: Molecular weight of glucose is 180.156 g150 mg glucose is equivalent to (0.15/180.156) mol =…

Q: The cell membrane must be fluid, retain the boundary of a cell as well as interact with aqueous…

A: As per our guidelines we are supposed to answer only ? One question ( if there are multiple…

Q: The following peptide that has been acetylated at the C-terminus: CH3C(O)-GEEGH-NH2 Plot the…

A: Titration is a very useful procedure to estimate the concentration of any unknown compound in a…

Q: A tripeptide has the following sequence:    Glu-Trp-Arg What is the net charge of this tripeptide…

A: The given peptide is composed of three amino acids. Peptide composed of three amino acids is called…

Q: a) Draw a non-covalent interaction between a water molecule and the charge on a phosphorylated…

A: Unlike covalent interactions where there is sharing of electrons between two atoms, in non-covalent…

Q: Consider the following pKa values: terminal amino group: 9.5; C = 8.2; Y = 10.1; K= 10.5; terminal…

A: Isoelectronic point is defined as the pH at which the amino acid does not move in an electric field.…

Q: Some organisms thrive at pH 2; other organisms thrive at 65°C.  Yet mammals cannot tolerate either…

A: Protein structures are produced by the condensing of amino acids into peptide bonds. The arrangement…

Q: Match each of the statements below with the fibrous protein that mostly fits the description.…

A: Keratin is a hard protein compound present in the epidermis, hair, and nails that aids in the…

Q: The enzyme that cleaves off the sialic acid from degrading glycoproteins are directed to the…

A: Glycoproteins are proteins that contain carbohydrate molecules. These carbohydrates play a role in a…

Q: Which way is more common practice to characterize the strength of a binding reaction between a…

A: Answer : the more common practice to characterize the strength of a binding reaction between a…

Q: A certain protein is used to activate myosin. If the protein is treated with B-mercaptoethanol, it…

A: Proteins are biomolecules made up of amino acid chains arranged in three-dimensional and…

Q: early all bacteria contain peptidoglycan. Review the structure of peptidoglycan by selecting the…

A: It is an essential component of bacterial cell wall. Let us see all options below -

Q: Which of the following statement is not true?     In a secondary structure the consecutive…

A: The secondary structure of a protein refers to the spatial arrangement of the main chain atoms of…

Q: Estimate the number of amino acid residues in each of the two helices of a segment of the…

A: The structural configuration of alpha-keratin proteins, a class of fibrous structural protein…

Q: A tetradecapeptide (14 amino acid residues) gives the following peptide fragments on partial…

A: A peptide is sequence of amino acids in which different amino acids are joined through peptide bond…

Proteins

We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.  

Protein Expression

The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.