AP Bio Unit 3 Part 1: Protein POGIL – Flashcards

R-groups would need to be nonpolar, containing only _________________ or rings, in order for hydrophobic interactions to occur between two amino acids in a protein chain

________________ is formed by further folding of the amino acid chain (beyond secondary structure), and is held together by various types of bonds between groups.

_______________ is formed when 2 or more polypeptide chains that make up a protein associate with one another and are held together, by bonds between their R groups.

All amino acids can participate in ________________ to stabilize secondary structure.

Which of the amino acids could form disulfide bonds with another amino acid in the chain to stabilize the tertiary structure of the protein?

Which of the amino acids could participate in the hydrophobic interactions with another amino acid in the chain to stabilize the tertiary structure of the protein?

What type of bonds or interactions could asparagine form with another amino acid in the chain in order to form a quaternary structure with another protein chain?

Bonds or interactions holding structure together: peptide (covalent) bonds
Description: the sequence of amino acids
Number of polypeptide chains: 1

Bonds or interactions holding structure

Bonds or interactions holding structure together: hydrogen bonds, ionic bonds, disulfide bridges, and hydrophobic interactions
Description: R-group side chains of different amino acids interact to further fold the protein
Number of polypeptide chains: 1

Bonds or interactions holding structure together: hydrogen bonds, ionic bonds, disulfide bridges, and hydrophobic interactions
Description: Bonds form between individual polypeptide chains
Number of polypeptide chains: 2 or more

________________ is the only level of structure that is maintained after denaturing, as only peptide bonds are retained

Heating and changing pH levels are two ways to disrupt the shape of a protein. High T or pH levels that vary from the natural environment of the protein will break hydrogen bonds, ionic bonds, disulfide bridges, and hydrophobic interactions. Covalent bonds will remain undisturbed. This process of destroying the shape of a protein is called _____________.

The heat or pH change would disrupt the shape of the _____________ and prevent it from working properly

When hair is chemically straightened, this affects the ______________ and ___________ structures of the proteins. (2)