urease

urease
/yoor"ee ays', -ayz'/, n. Biochem.
an enzyme that changes urea into ammonium carbonate, occurring in bacteria, fungi, etc.
[1895-1900; URE(A) + -ASE]

* * *

▪ enzyme
      an enzyme that catalyzes the hydrolysis of urea, forming ammonia and carbon dioxide. Found in large quantities in jack beans, soybeans, and other plant seeds, it also occurs in some animal tissues and intestinal microorganisms. Urease is significant in the history of enzymology as the first enzyme to be purified and crystallized (by James B. Sumner in 1926). This achievement laid the groundwork for the subsequent demonstration that urease and other enzymes are proteins.

* * *


Universalium. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Urease — (Klebsiella aerogenes) Bändermodell mit 2 Ni Ionen (grün) nach PDB  …   Deutsch Wikipedia

  • Urease — (EC number|3.5.1.5) is an enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia. The reaction occurs as follows:(NH2)2CO + H2O → CO2 + 2NH3 Urea + Water urease > Ammonium Carbonate In 1926 James Sumner showed that urease is …   Wikipedia

  • urease — urease. См. уреаза. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • uréase — [yʀeaz] n. f. ÉTYM. 1876; de uré , et ase. ❖ ♦ Biochim. Enzyme qui décompose l urée en carbonate d ammonium, contenue dans divers végétaux ou produite par des micro organismes. ❖ DÉR. Uréasique …   Encyclopédie Universelle

  • Urease — Urease, zu den ⇒ Hydrolasen gehörendes nickelhaltiges Enzym, das Harnstoff in CO2, H2O und NH3 spaltet. U. war das erste Enzym, das in reiner Form dargestellt wurde (1926) …   Deutsch wörterbuch der biologie

  • urease — [yoor′ē ās΄, yoor′ēāz΄] n. [ URE(A) + ASE] an enzyme that catalyzes the hydrolysis of urea into ammonia and carbon dioxide or ammonium carbonate …   English World dictionary

  • Uréase — Représentation de l uréase L uréase (découverte en 1876 par Musculus[1]) est une enzyme qui catalyse la réaction de transformation de l urée en dioxyde de carbone et ammoniac …   Wikipédia en Français

  • Urease — Ure|a|se 〈f. 19〉 Harnstoff spaltendes Enzym [<grch. ouron „Harn“] * * * U|re|a|se [↑ Urea u. ↑ ase], die; : eine in manchen Pflanzen, Mikroorganismen u. Wirbellosen verbreitet auftretende nickelhaltige Amidhydrolase, MG 480 000, die Harnstoff… …   Universal-Lexikon

  • urease — ureazė statusas T sritis chemija apibrėžtis Fermentas, katalizuojantis karbamido hidrolizę. atitikmenys: angl. urease rus. уреаза …   Chemijos terminų aiškinamasis žodynas

  • urease test — a test for urea based on the conversion of urea into ammonium carbonate by the urease of soybean. 2. (for the production of urease by bacteria) urease test broth (see under culture medium) is prepared in slants. After inoculation of the surface… …   Medical dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”