The Concentration and Rate of Work of Urease

Urease Concentration and Utilization Profile I am studying how urease works and how fast it works. I predict that the higher the solution concentration, the faster the enzyme will work. This is because it is more likely that they will collide with each other the more substances are concentrated, so it is because there is more reaction within a given time. Start the experiment. We will conduct a planning experiment to start the project. This will help me decide how to experiment.

Urease is a hydrolase that attacks nitrogen and carbon bonds of amide compounds such as urea and forms basic final product ammonia. When organisms are grown in urea broth medium containing pH indicator phenol red, the presence of urease can be detected. When the substrate urea decomposes into its product, the presence of ammonia creates an alkaline environment and turns phenol red into a deep pink. This is a positive reaction in the presence of urease. Dark pink development failure is negative evidence of reaction

Urea-degrading organisms produce urease, urea hydrolyzes urea to produce ammonia, bicarbonate and carbonate; this leads to more alkaline urine, supersaturated crystal formation from carbonate apatite and struvite Enthrone Stone to Enable). The size of the hornet stone continues to expand, causing infection, obstruction, or both. Complications of obstruction and multiple infections include hydronephrosis, hydronephrosis, urinary septicemia and yellow granulomatous pyelonephritis. In addition, pathogens can be isolated from Strabby without being affected by the host's immune system. Proteus is the most common urea splitting organism. However, Escherichia coli, Klebsiella, Pseudomonas, and Staphylococcus also can produce urease and sometimes are involved in the formation of coral stones.

There is research on hydrolysis of legume urea and urea for suppression. Different concentrations of 1000, 700, 500, 300, 100 and 50 μl of Hg and Zn inhibitors were mixed with urease for 10 minutes and the inhibitor was allowed to react completely with urease at 37 ° C. Add 20 mM BCP and urea solution at pH 1 and hold for another 10 min. At the same temperature. The remaining enzymes not inhibited by inhibitors react with urea. The color of the mixture at this stage is purple, which indicates that the enzyme is affected by the inhibitor.

Enzymes catalyze the conversion of only one specific substrate, but even if they are derivatives of the original substrate, do not catalyze the conversion of other substrates. An example is urease, an enzyme that catalyzes the reaction: urea + H 2 O → CO 2 + 2 NH 3. However, urease does not catalyze the hydrolysis of methylurea or thiourea. It represents a more general substrate-specific morphology, in which the enzyme catalyzes the reaction, which typically includes several similar substrates with the same functional group. The affinity of each matrix can vary (the K M of each matrix can vary). As an example, carboxypeptidase B can selectively cleave peptide bonds with a charged amino acid (arginine, lysine) for enzymes that hydrolyze peptides from the carboxy terminus.