-ase


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-ase

 
suffix used in forming the name of enzymes, affixed to a stem indicating the substrate (luciferase), the general nature of the substrate (endopeptidase, proteinase), or the type of reaction catalyzed (hydrolase).

-ase

(ās),
A termination denoting an enzyme, suffixed to the name of the substance (substrate) on which the enzyme acts; for example, phosphatase, lipase, proteinase. May also indicate the reaction catalyzed, for example, decarboxylase, oxidase. Enzymes named before this naming convention was established generally have an -in ending; for example, pepsin, ptyalin, trypsin.
[Fr. (diast)ase, an amylase that converts starch to maltose, fr. G. diastasis, separation, fr. dia-, through, apart, + stasis, a standing]

-ase

suffix used in enzyme names, affixed to a stem indicating the substrate (luciferase), the general nature of the substrate (proteinase), the reaction catalyzed (hydrolase), or a combination of these (transaminase).

-ase

suffix used in naming enzymes; acts on the substance named in the word root (that precedes the suffix): lipase, protease.

-ase

A suffix denoting an enzyme; attached to the end of the name of the substance (substrate) on which the enzyme acts; e.g., phosphatase, lipase, proteinase. May also indicate the reaction catalyzed, e.g., decarboxylase, oxidase.
[Fr. (diast)ase, an amylase that converts starch to maltose, fr. G. diastasis, separation, fr. dia-, through, apart, + stasis, a standing]

-ase

Suffix denoting an enzyme. In most cases the suffix is added to a term for the substance acted upon or to the biochemical action promoted by the enzyme. Thus a lipase is an enzyme that acts on fats and a reverse transcriptase is an enzyme that promoted the transcription of DNA from RNA (which is the reverse of the usual direction). The suffix originated in the ending of the term diastase, a polysaccharide-splitting enzyme named in 1838.

-ase

suffix used in forming the name of enzymes, affixed to a stem indicating the substrate (luciferase), the general nature of the substrate (proteinase) or the type of reaction effected (hydrolase).