3. List the kinds of interactions between amino acids that are important for eac

Question

3. List the kinds of interactions between amino acids that are important for each level of protein structure. Primary- Secondary Tertiary Quaternary- 4. Based on your answer above, what level(s) of structure would be disrupted by each of the following? a. heat b. strong acid c. saturated salt solution d. organic solvents such as alcohol or chloroform 5. The active site of an enzyme usually consists of a pocket on the enzyme surface lined with the amino acid side chains necessary to bind the substrate and catalyze its chemical transformation. Carboxypeptidase, which sequentially removes the carboxyl-terminal amino acid residues from its peptide substrates, consists of a single chain of 307 amino acids. The two essential catalytic groups in the active site are furnished by Arg and Glu270 How many amino acid residues apart are these two amino acids? 145 A.

Explanation / Answer

3. Primary structure - covalent peptide bonds.

Secondary structure - hydrogen bonds formed between the backbone of the chain.

Tertiary structure - electrostatic interactions, hydrogen bonds, Vander walls interactions and disulfide bridges.

Quaternary structure - attractions between the different subunits.

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