The conversion of cysteine to cystine is what kind of reaction? an oxidation a r

Question

The conversion of cysteine to cystine is what kind of reaction? an oxidation a reduction an addition a condensation a hydrolysis Which of the following is NOT true of peptide bonds? They tend to be planar. They are generally in the trans and rarely in the cis configuration. They tend to have the amide nitrogen protonated to give a positive charge. They contain an unusually long carbon-carbon bond. What do alpha -helices and beta -sheets have in common? Both are stabilized by hydrogen bonding involving carbonyl oxygens and amide nitrogens. The same amino acids stabilize both forms of secondary structure. The length of a 10-amino acid alpha-helix and beta-sheet strand will be the same. Both are stabilized by glycine and proline residues.

Explanation / Answer

1. an oxidation

2. They contain an unusually long c-c bond.

3.

both are stabilized by hydrogen bonding involving carbonyl ocygens and amide nitrogens.

same amino acids stabilize both forms of secondary structure.

the length of a 10-aminoacids alpha and beta will be same.

4.
hydrophilic amino acid R-groups are on the interior of the protein and hydrophilic hroups are on the outside.

5. hydrogen bonds.

6. monoclonal antibodies are raised against a single antigen molecules while polyclonal antibodies are

raised agains a mixture of antigen bodies.

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