Urease - Definition and Overview

Urease (EC 3.5.1.5 (http://us.expasy.org/cgi-bin/nicezyme.pl?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 + 3H₂O → CO₂ + 2NH₄OH

In 1926 James Sumner shows that urease is a protein. Urease is found in bacteria, yeast and several higher plants.

Characteristics:

A specific urease (which may be used in diagnosis) occurs in Helicobacter pylori.

Example Usage of Urease
	USMLEStepStudy: Urease producing organisms = "PUNCH" = proteus, ureaplasma, nocardia, cryptococcus, helicobacter ( from @usmleforums )
	usmleforums: Urease Producing Microorganisms Mnemonic: To remember them PUNCH * Proteus * Ureaplasma urealyticum *.. http://bit.ly/5zRxE6
	J_Henderson: Okay. Results are in. It's gram neg, + Urease, +indole and - MR. It's proteus morgani. Hooray.

Copyright 2009 WordIQ.com - Privacy Policy :: Terms of Use :: Contact Us :: About Us
This article is licensed under the GNU Free Documentation License. It uses material from the this Wikipedia article.

Example Usage of Urease