most stable stereoisomer below, Be sure to use the wedge/dash notation and keep the same
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- 43. The Hoffman rule states that: the alkene with less alkyl substituents is the major product in base-induced elimination reactions the more highly substituted carbocation is formed as the intermediate rather than the less highly substituted one the alkene with more alkyl substituents is the major product in base-induced elimination reactions the less highly substituted carbocation is formed as the intermediate rather than the more highly substituted oneDraw a Haworth projection and Fischer projection for a methyl a-D-mannopyranoside (methyl a-D-mannoside). Label the anomeric carbon and the glycosidic bond.If the disaccharide maltose is formed from two glucose monosaccharides, which are hexose sugars, how many atoms of carbon, hydrogen, and oxygen does maltose contain and why?
- 5 25) Although the UV280 extinction coefficient of BSA is well known, why was the BCA assay employed to measure protein concentration of the folate labeled BSA? Please provide an explanation. (C) Would the use of reducing agents have an affect on the tertiary structure of BSA—please explain your answer (you will need to investigate the structure of BSA beyond this article)?1. a. draw the L- & R- stereoisomer of the amino acid T using a fischer projection or a newman projection. b. draw the tripeptide LEM in the protonation state you would expect at physiological pH. show the position of phi and psi angles on the E residueDraw a trisaccharide that has TWO different forms of glycosidic bonds via a Hayworth Projection. Also, note the names of each monomer.
- The structure forms basenpair with what specific nucleobase?1.a.If this molecule was the side chain of an amino acid, in a protein, what tertiary structure stabilizers could be present? b.Make a key and use color to highlight what part of you structure can be stabilized in each manner?Consult Table 18.3 and draw alanine. Label the functional groups and give the three-letter abbreviation and the one-letter abbreviation. What group does the side chain fall into?
- Let’s consider histidine as a free amino acid in aqueous solution. a) Draw the most likely structure of histidine under biochemical standard state conditions. b) Given that free histidine has the following three pKa values, assign each to its corresponding acidic hydrogen or conjugate base in your structure from part a). pKa1 = 1.7; pKa2 = 6.2; and pKa3 = 9.1 c) For each pKa, give the corresponding expression for the equilibrium constant. It helps to write out the chemical equation for each. d) Create a speciation diagram for histidine by plotting Xi vs pH from pH = 4 to pH = 8 where Xi is the mole fraction of the two histidine species involved in the K2 equilibrium in part c).Draw the two possible Haworth structures (both alpha and beta anomers) for the following monosaccharides and give their corresponding systematic names. [Show the stepwise process] D-Ribose D-Galactose D- FructoseIdentify the selected functional groups inside of the red dotted lines.