Explain the ways in which the molecular structure of haemoglobin and collagen are related to their functions
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Explain the ways in which the molecular structure of haemoglobin and collagen are related to their functions.
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- Is myoglobin a motif, a domain, or a complete three-dimensional structure? Explain.The primary and tertiary structures of hemoglobin and myoglobin are very similar and both contain the 'heme' group as an oxygen-binding prosthetic group. However this There are important functional differences between the two proteins. Hemoglobin oxygen transport protein, myoglobin functions as oxygen storage protein. Hemoglobin and consider the structural differences and oxygen binding curves between myoglobin why myoglobin is a good oxygen transport protein, while hemoglobin Explain why it cannot be a good oxygen storage protein.there are some diseases due to defects in collagen synthesis such as Scurvy, Osteogenesis Imperfecta and Type VI Ehlers-Danlos Syndrome. explain in your own words the molecular basis of these diseases?
- In the binding of oxygen to myoglobin, the relationship between the concentration of oxygen and the fraction of binding sites occupied can best be described as: hyperbolic linear with a negative slope linear with a positive slope random sigmoidalWhich of the following is involved in the bio-signaling pathway that includes membrane turnover and exocytosis? a) Phosphatidyl glycerol b) Phosphatidylinositol c) Phosphatidyl glycerol and myoinositol d) MyoinositolA red heme-containing protein called leghemoglobin is found in the nitrogen-fixing root nodules of leguminous plants. The protein component is produced by the plant, whereas bacterial cells produce the precursor of heme. Can you deduce the function of leghemoglobin? [Hint: Leghemoglobin is a member of the globin superfamily.]
- What is one feature of fibrillar collagen that contributes to its strength? They form crosslinks between glycine and alanine residues on adjacent collagens. They form crosslinks between lysine and hydroxylysine residues on one collagen molecule. They form crosslinks between glycine and alanine residues on one collagen molecule. They form crosslinks between lysine and hydroxylysine residues on adjacent collagen molecules.Calculate the percent oxygen saturation of myoglobin if 7 of 15 binding sites are occupied..Compare the functions and properties of each of three types of macromolecules that are abundant in the ECM of all tissues.
- List the steps of collagen assembly and include the location of each stepNitric oxide (NO) is a gaseous molecule with lipid solubility similar to that of O2 and CO2. Endothelial cells lining arteries use NO to signal surrounding smooth muscle cells to relax, thereby increasing blood flow. What mechanism or mechanisms would transport NO from where it is produced in the cytoplasm of an endothelial cell into the cytoplasm of a smooth muscle cell, where it acts?The inner leaflet (monolayer) of the human erythrocyte membrane consists predominantly of phosphatidylethanolamine and phosphatidylserine. The outer leaflet consists predominantly of phosphatidylcholine and sphingomyelin. Although the phospholipid components of the membrane can diffuse in the fluid bilayer, this sidedness is preserved at all times. How?