Biomaterial Database

Identification of a unique mammalian species of cholyl-CoA: amino acid N-acyltransferase. 1981

B Czuba, and D A Vessey

The N-acyltransferase enzyme which catalyzes the conjugation of the CoA adducts of bile acids with amino acid has been partially purified from dog liver. Unlike the N-acyltransferase from five other mammalian species, the enzyme from dog liver was unable to synthesize glycine conjugates from cholyl-CoA in vitro even in the presence of 0.1 M glycine. The enzyme did catalyse the synthesis of taurine conjugates. Thus, the enzyme from dog liver resembles non-mammalian forms of the enzyme which also synthesize only taurine conjugates. However, the molecular weight of the enzyme from dog liver was found to be approximately 45 700, which is similar to values reported for other mammalian forms and considerably smaller than the molecular weight of 65 000 reported previously for a non-mammalian form of the enzyme.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008970	Molecular Weight	The sum of the weight of all the atoms in a molecule.	Molecular Weights,Weight, Molecular,Weights, Molecular
D004285	Dogs	The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)	Canis familiaris,Dog
D000217	Acyltransferases	Enzymes from the transferase class that catalyze the transfer of acyl groups from donor to acceptor, forming either esters or amides. (From Enzyme Nomenclature 1992) EC 2.3.	Acyltransferase
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013045	Species Specificity	The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.	Species Specificities,Specificities, Species,Specificity, Species