Protein & enzymes

2. A chain of 20 or more amino acids.
6. The monomer unit of proteins; there are 20 unique types.
7. The cellular structure that acts as an enzyme to facilitate peptide bond formation.
10. A spiral-shaped secondary protein structure held together by hydrogen bonds.
11. The level of protein structure referring specifically to the sequence of amino acids.
12. The covalent bond formed between two amino acids during polymerization.
14. A type of regulation where an activator or inhibitor binds to a site other than the active site.
17. An organic reaction helper, such as NAD+
18. The process where a protein unfolds and loses its higher-order structure due to heat or pH.
19. Protein structure resulting from the association of multiple polypeptide subunits.

1. To speed up a chemical reaction in a timely manner using an enzyme.
3. A back-and-forth secondary protein structure (beta-sheet).
4. A reaction helper, such as an ion, required for enzyme activity.
5. The unique region of an enzyme where the substrate binds.
8. Often written as EA, this is the energy required to start a chemical reaction.
9. Molecules that help proteins fold into their correct functional shapes.
13. A type of inhibitor that blocks the active site directly.
15. The specific reactant(s) that an enzyme acts upon.
16. A type of inhibition where the end product of a pathway shuts down an earlier step.