Biochem/physiol Actions

Urease activity has been shown to be inhibited by benzpyrene following exposure to light. This inhibition was due to the effect of benzpyrene on urease′s sulfhydryl groups.

General description

Subunit molecular weight: ~90,770 Composed of six subunits with total molecular weight: ~544,620

Packaging

100 mL in glass bottle

Unit Definition

One micromolar unit will liberate 1.0 µmole of NH₃ from urea per min at pH 7.0 at 25 °C. It is equivalent to 1.0 I.U. or 0.054 Sumner unit (1.0 mg ammonia nitrogen in 5 minutes at pH 7.0 at 20 °C)