3. Briefly outline the evidence that methyl red and B-cyclodextrin formed a host-guest complex.

Amino Acids and Proteins 1. What are the structural features of amino acids with an emphasis on essential amino acids? 2. Write the properties of amino acids: zwitterion, pka, pKb, amphoteric character, isoelectric point, and electrophoresis. 3. Write the mechanism of peptide bond formation and what are its structural features. 4. What are the different types of proteins and their function? 5. Explain the meaning and importance of the primary, secondary, tertiary, and quaternary structures of a protein and the factors that cause its denaturation.

1 Based on the structural properties of 7EHE, how resistant (or sensitive) would your protein be to heat denaturation and why?

Which separation technique is the most specific and offers the highest protein purification possible?

1. Draw deoxythymidylate (deoxythymidine 5'- monophosphate, dTMP) and glutamic acid. describe summary

Draw a pentapeptide, peptide sequence: IENAP Show the position of all 'heavy' atoms with the appropriate letter (C, N, O, S etc.) and indicate the number of attached hydrogen atoms (no skeletal structures allowed).- Show the chirality of the alpha carbon of every residue as the L isomer (not required for Glycine). All trigonal planar groups must be shown explicitly with appropriate geometry. • Show all double bonds and/or partial double bonds. • Draw all ionisable groups as their most highly populated state at pH 7.4 Make the peptide bond between the fourth residue and proline the cis isomer.- Show all other peptide bonds as trans.e

Consider the tripeptide phenylalanylcysteylmethionine. Part: 0/2 Part 1 of 2 Draw the structure of this tripeptide at physiological pH. Click and drag to start drawing a structure. C™ č X

Please don't provide handwritten solution .....  Does tyrosine contain p-pi or pi-pi conjugation?

Although the bond energy for the hydrogen bond in a vacuum is estimated to be about 20 kJ/mol, we find that each hydrogen bond in a folded protein contributes much less--probably less that 5 kJ/mol--to the enthalpy of protein stabilization. Suggest an explanation for this difference. Explain briefly.

macollege.instructure.com/courses/352/pages/covid-proteins-lab-manual?module_item_id=D44333 A = abc Where "A" is absorbance, "a" is molar absorptivity, "b" is the path length (length of the cuvette in units of cm), and "c" is concentration (mol/L). The molar absorptivity is an intrinsic property of a molecule which tells us how intensely it will absorb at a particular wavelength. If "A" is a unitless quantity, "b" is in units of cm, and "c" is in units of mol/L, then what are the units of molar absorptivity? Do a little research to learn how alpha-helices and beta-sheets are drawn in protein structures. If most of the absorption properties are coming from the alpha-helices in these proteins, and many alpha-helices have similar absorbance properties across different proteins, which protein would you predict would have the highest molar absorptivity? Your job is to use the following data table to determine the molar absorptivity for each of the following proteins at their respective…