The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.

A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.

The chemical reactions and pathways resulting in the breakdown of rhamnose, the hexose 6-deoxy-L-mannose.

The chemical reactions and pathways resulting in the breakdown of L-fucose (6-deoxy-Lgalactose).

The chemical reactions and pathways resulting in the breakdown of gamma-aminobutyric acid (GABA, 4-aminobutyrate), an amino acid which acts as a neurotransmitter in some organisms.

The chemical reactions and pathways resulting in the breakdown of L-arabinose into other compounds, including 2-oxoglutarate.

The formation of a protein tetramer, a macromolecular structure consisting of four noncovalently associated identical or nonidentical subunits.

A pathway that converts a carbohydrate to pyruvate and glyceraldehyde-3 phosphate by producing 6-phosphogluconate and then dehydrating it.

The chemical reactions and pathways involving monoterpenoid compounds, terpenoids having a C10 skeleton.

The chemical reactions and pathways resulting in the breakdown of monoterpenes, terpenes with a C10 structure.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an organic substance stimulus.

The chemical reactions and pathways resulting in the breakdown of p-cresol.

The chemical reactions and pathways resulting in the breakdown of gamma-aminobutyric acid (GABA, 4-aminobutyrate), an amino acid which acts as a neurotransmitter in some organisms.

The chemical reactions and pathways resulting in the breakdown of nicotine, (S)(-)-3-(1-methyl-2-pyrrolidinyl)pyridine.

The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.