Auresine

产品说明

一般描述

Auresine is a portion of the zinc metalloprotease Staphylococcus aureus. The enzyme has glycyl-glycine endopeptidase activity and it specifically cleaves polyglycine crosslinks in the cellular wall of Staphylococcus species, including various strains of methicillin-resistant Staphylococcus aureus (MRSA). Auresine is thus useful for lysis of MRSA.

应用

Auresine can be used for isolation of protoplasts, nucleic acids, proteins, lipids and other components of Gram-positive bacterial cells. Auresine is particularly useful to lyse MRSA.. Thanks to its unique activity in non-physiological conditions (low conductivity and low temperatures), isolated components after auresine treatment, like nucleic acids and proteins, are not prone to degradation by released cellular enzymes.

单位定义

One unit will reduce the turbidity (A600) of suspension of S. aureus cells from 0.250 to 0.125 in 10 minutes in 50 mM glycine, pH 8.0 at 25℃ in 6.0 mL reaction mixture.

制备说明

Auresine in soluble in water (20 mg/ml), yielding a clear solution. The product is active in 100 nM concentration (1.4 ug/mL) in low conductivity buffers (= 2 mS/cm) at temp. 0-40℃.

储存及稳定性

Auresine lyophilized powder should be stored at room temperature. Once dissolved in storage buffer, Auresine is stable at room temperature up to 4 months, at 4℃, -20℃, -80℃ at least 2 years. Storage buffer: 20 mM Tris-HCl, pH 7.0, 200 mM NaCl, 10% glycerol.

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