Source: E.Coli   Catalog No.: CHM-274   Description :

Recombinant Human NAP-2 produced in E.Coli is a non-glycosylated, Polypeptide chain containing 70 amino acids and having a molecular mass of 7609 Dalton. Recombinant NAP-2 is purified by proprietary chromatographic techniques.

Physical Appearance:

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation:

Recombinant Neutrophil-activating peptide 2, lyophilized from a concentrated (1 mg/ml) solution in water containing no additives.

Solubility:

It is recommended to reconstitute the lyophilized NAP-2 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Stability:

Lyophilized NAP-2 although stable at room temperature for 3 weeks, should be stored desiccated below -18 °C. Upon reconstitution NAP-2 should be stored at 4 °C between 2-7 days and for future use below -18 °C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).  Please avoid freeze-thaw cycles.

Purity:

Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Anion-exchange FPLC. (c) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.

Amino acid sequence:

The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Glu-Leu-Arg-Cys

Dimers and aggregates:

Less than 1% as determined by silver-stained SDS-PAGE gel analysis.

Biological Activity:

NAP-2 is fully biologically active when compared to standard. The specific activity as determined by the ability of NAP-2 to chemoattract human neurotrophils using a concentration of 1-10 ng/ml.

Endotoxin:

Less than 0.1 ng/µg (IEU/µg) of NAP-2.

Protein content:

Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm . 2. Analysis by RP-HPLC, using a standard solution of NAP-2 as a Reference Standard.

Usage:

Product is furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.