Brevibacterium: A gram-positive organism found in dairy products, fresh and salt water, marine organisms, insects, and decaying organic matter.Brevibacterium flavum: A species in the genus CORYNEBACTERIUM, family Corynebacteriaceae, which is used for industrial production of the amino acid LYSINE. It is closely related to Corynebacterium glutamicum.Corynebacterium: A genus of asporogenous bacteria that is widely distributed in nature. Its organisms appear as straight to slightly curved rods and are known to be human and animal parasites and pathogens.Cholesterol Oxidase: An enzyme that catalyzes the oxidation of cholesterol in the presence of molecular oxygen to 4-cholesten-3-one and hydrogen peroxide. The enzyme is not specific for cholesterol, but will also oxidize other 3-hydroxysteroids. EC 184.108.40.206.Cheese: A nutritious food consisting primarily of the curd or the semisolid substance formed when milk coagulates.Arthrobacter: A genus of asporogenous bacteria isolated from soil that displays a distinctive rod-coccus growth cycle.PaintingsAmino Acids, DiaminoDiaminopimelic AcidHomoserine Dehydrogenase: An enzyme that catalyzes the reduction of aspartic beta-semialdehyde to homoserine, which is the branch point in biosynthesis of methionine, lysine, threonine and leucine from aspartic acid. EC 220.127.116.11.Sulfur Compounds: Inorganic or organic compounds that contain sulfur as an integral part of the molecule.Fucus: A genus of BROWN ALGAE in the family Fucaceae. It is found in temperate, marine intertidal areas along rocky coasts and is a source of ALGINATES. Some species of Fucus are referred to as KELP.