Enzymes

6 Classes of Enzymes

Oxidoreductases, Transferases, Hydrolases, Lyases, Isomerases, Ligases

Oxidoreductase Purpose

Oxidation-Reduction reaction

Transferases Purpose

Transfer of functional groups

Hydrolases Purpose

Hydrolysis reactions

Lyases purpose

group elimination to form double bonds

Isomerases Purpose

Isomerization reactions

Ligases Purpose

Bond formation coupled with ATP Hydrolysis

How is a Lineweaver-Burk plot effected with a competitive inhibitor

Km increases, Vmax is unchanged

How is a Lineweaver-Burk plot effected with an uncompetitive inhibitor

Km decreases, Vmax decreases

How is a Lineweaver-Burk plot effected with a noncompetitive inhibitor

km is unchanged, Vmax is decreased

What type of inhibitor is this?

noncompetitive

What type of inhibitor is this?

A competitive inhibitor

What type of inhibitor is this?

uncompetitive

What is a competitive inhibitor

A molecule that binds to an enzyme's active site, preventing the substrate from binding

What is a noncompetitive inhibitor

A molecule that binds to an enzyme at a site other than the active site, altering enzyme function and preventing substrate binding.

What is an uncompetitive inhibitor

A molecule that binds only to the enzyme-substrate complex, preventing conversion to the product.