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Question: Disulfide Bonds Determine the Properties of Many Proteins Some natural proteins are rich in disulfide bonds, and their mechanical properties (tensile strength, viscosity, hardness, etc.) are correlated with the degree of disulfide bonding.(a) Glutenin, a wheat protein rich in disulfide bonds, is responsible for the cohesive and elastic character of dough made from wheat flour. Similarly, the hard, tough nature of tortoise shell is due to the extensive disulfide bonding in its ?-keratin. What is the molecular basis for the correlation between disulfide-bond content and mechanical properties of the protein?(b) Most globular proteins are denatured and lose their activity when briefly heated to 65 °C. However, globular proteins that contain multiple disulfide bonds often must be heated longer at higher temperatures to denature them. One such protein is bovine pancreatic trypsin inhibitor (BPTI), which has 58 amino acid residues in a single chain and contains three disulfide bonds. On cooling a solution of denatured BPTI, the activity of the protein is restored. What is the molecular basis for this property?
During replication of viral DNA of members of the Polyomaviridae, a pair of T antigen hexamers forms a preinitiation complex at the origin for viral DNA replication.
how to keeping the shape of the cell. But I have found that there is a primary and secondary cell wall - each has their own function - so I am somewhat confused and looking for guidance.
Glucocorticoid drug inhalers are often included in a treatment regimen for asthma. Determine the purpose (mechanism) underlying the use of this medication.
List all probable points at which caffeine may be exerting its effect. Caffeine is known to alter the transmembrane movement of calcium. What is (are) the possible site(s) at which caffeine is acting.
Suppose that a population of 1500 Tasmanian Devils is in H/W equilibrium for a gene that determines fang length. The allele for long fangs is dominant to the allele for short ones.
In what ways are species more "fluid" than even 20th century biologists might have believed? To what extent was Darwin's explanation of species as "convenient constructions" accurate? Are species real.
Discuss how is cancer different from most other types of genetic diseases? Outline Knudson's multistage theory of cancer and explain how it helps to unilateral and bilateral cases of retinoblastoma.
What is the advantage of having a cerebrum that is highly convulated? What term is used to indicate its grooves? Its outward folds? What groove divides the cerebrum into two hemispheres? What divides the parietal from the frontal lobe? The parietal f..
Assume you are studying a circular plasmid DNA molecule of size 10,500 base pairs. When you digest this plasmid with 3 different restriction enzymes,
The external environment is open directly to the peritoneal cavity of the abdomen and pelvis. This is one source of pelvic inflammatory disease.
A blue-eyed man marries a brown-eyed woman; and they have six children, all brown-eyed. What is the most likely genotype of the father?
The fruit in summer squash may have different shapes. When 2-true breeding plants with disc-shaped fruit were crossed to true breeding plants with long fruit,
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