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Protein Catalog >> Enzymes >> Peptidase >> Lysostaphin
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Lysostaphin Recombinant
 
Catalogue Number ENZ-269
Synonyms Lysostaphin, EC 3.4.24.75, Glycyl-glycine endopeptidase.
Description Lysostaphin, an endopeptidase specific for the cell wall peptidoglycan of staphylococci, is an extremely potent anti-staphylococcal agent. Lysostaphin is used as a research and diagnostic tool. Because it lyses staphylococci efficiently, it is widely used when preparing staphylococcal DNA or other cellular components for genetic and biochemical studies and for the preparation of protoplasts for transformation. Preparation and analysis of bacterial DNA has become a powerful tool used by clinical and other microbiologists in epidemiological studies aimed at tracing sources of infection or bacterial contamination.
The Mw of lysostaphin is 26,921 (Recsei et al, PNAS 1987).
Lysostaphin has optimal stability in the range of pH 4.5, and optimal activity in the range of pH 8.
For a stock solution it is recommended to work with 10mg/ml lysostaphin in 10mM sodium acetate pH 4.5. For a reaction buffer it is recommended to work with 200mM Tris-HCl pH 8.
Source Escherichia Coli.
Physical Appearance Sterile Filtered lyophilized powder.
Formulation The protein was lyophilized without any additives.
Stability Lysostaphin although stable at 4°C for 6 months, should be stored desiccated below -18°C.
Please prevent freeze-thaw cycles.
Solubility It is recommended to reconstitute the lyophilized Lysostaphin in sterile water at a concentration of 1mg/ml, which can then be further diluted to other aqueous solutions.
Purity 96.5% as determined by RP-HPLC.
Biological Activity Determined by the decrease in turbidity of a suspension of heat-killed Staphylococcus aureus at pH8.0, 30°C.
Specific Activity Determined to be 4,135 units/mg.
Protein content Protein quantitation was carried out by two independent methods
1. UV spectroscopy at 280 nm using the absorbency value of 2.02 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).
2. Analysis RP-HPLC, using a calibrated solution of Lysostaphin as a Reference Standard.
Usage Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
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