Enzymes: Classes, Nomenclature, and Classification

Which category of enzymes catalyzes oxidation-reduction reactions?

Enzymes that catalyze the bonding together of two substrate molecules belong to which category?

What type of enzymes catalyze the hydrolysis of substrates?

Which enzymes require simultaneous release of energy by hydrolysis in their catalytic process?

Enzymes that catalyze the isomerization of a substrate belong to which category?

Which type of enzymes catalyze the transfer of a groups from one molecule to another?

Which type of enzyme is involved in the conversion of pyruvate to lactate?

In the reaction catalyzed by acetylcholinesterase, what is the product when acetylcholine is hydrolyzed?

Which enzyme is responsible for the transfer of aspartate amino group to α-ketoglutarate?

What type of enzyme is lactate dehydrogenase?

Which enzyme catalyzes the conversion of cis-Aconitate to Isocitrate?

In the reaction catalyzed by Tyrosine-tRNA synthetase, what is consumed along with ATP?

Enzymes are often classified by placing them in categories according to the reactions that they ______: 1. Oxidoreductase 2. Transferase 3. Hydrolase 4. Lyase 5. Isomerase 6. Ligase

Oxidoreductases catalyze oxidation-reduction reactions of substrate molecules, most commonly addition or removal of ______ or ______.

Transferases catalyze the transfer of groups from one molecule to another – Transaminases transfer an amino group between substrates – Kinases transfer a phosphate group from ATP to give ADP and a phosphorylated ______.

Hydrolases catalyze the ______ of substrates, i.e. the breaking of bonds with addition of water.

Isomerases catalyze the isomerization (rearrangement of atoms) of a substrate in reactions. One substrate, one ______.

Ligases catalyze the bonding together of two substrate molecules. Not favorable, require simultaneous release of energy by ______ reaction.

The conversion of ATP to ADP is involved in the synthesis of proteins and DNA. This process is catalyzed by __________ enzymes.

Oxidoreductase enzymes catalyze the transfer of electrons between molecules. An example is lactate dehydrogenase which converts pyruvate to __________.

Transferase enzymes facilitate the transfer of functional groups between molecules. Aspartate amino transferase moves an amino group from aspartate to α-ketoglutarate, forming __________.

Hydrolase enzymes catalyze the cleavage of chemical bonds by adding __________ molecule.

Lyase enzymes catalyze the addition or removal of a group to double-bonded substrates. Aconitase converts __________ to Isocitrate.

Isomerase enzymes catalyze the rearrangement of atoms within a molecule. Phosphohexose isomerase converts glucose-6-phosphate to __________.

Enzymes are often classified by placing them in categories according to the reactions that they ______: 1. Oxidoreductase 2. Transferase 3. Hydrolase 4. Lyase 5. Isomerase 6. Ligase

Hydrolases catalyze the ______ of substrates, i.e. the breaking of bonds with addition of water.

Isomerase enzymes catalyze the rearrangement of atoms within a molecule. Phosphohexose isomerase converts glucose-6-phosphate to ______.

Ligases catalyze the bonding together of two substrate molecules. Not favorable, require simultaneous release of energy by ______ reaction.

Transferases catalyze the transfer of groups from one molecule to another – Transaminases transfer an amino group between substrates – Kinases transfer a phosphate group from ATP to give ADP and a phosphorylated ______.

Oxidoreductases catalyze oxidation-reduction reactions of substrate molecules, most commonly addition or removal of O or H. Require coenzymes that are reduced or oxidized as the substrate is oxidized or reduced. Ex: alcohol ______.

Ligase enzymes catalyze the bonding together of two substrate molecules. Not favorable, require simultaneous release of energy by ______ reaction.

Transferases catalyze the transfer of groups from one molecule to another – Transaminases transfer an amino group between substrates – Kinases transfer a phosphate group from ATP to give ADP and a phosphorylated ______.

Oxidoreductases catalyze oxidation-reduction reactions of substrate molecules, most commonly addition or removal of ______ or ______.

Isomerases catalyze the isomerization (rearrangement of atoms) of a substrate in reactions. One substrate, one ______.

Hydrolase enzymes catalyze the cleavage of chemical bonds by adding ______ molecule.

Enzymes that catalyze the bonding together of two substrate molecules belong to which category?