Recombinant Human CXCL7/NAP-2 Protein

R&D Systems, part of Bio-Techne | Catalog # 393-NP

R&D Systems, part of Bio-Techne
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Carrier Free
393-NP-010/CF
393-NP-050/CF
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With Carrier
393-NP-010
393-NP-050
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Key Product Details

Source

E. coli

Accession #

P02775

Conjugate

Unconjugated

Applications

Bioactivity

View all CXCL7/NAP-2 Proteins and Enzymes »

Product Specifications

Source

E. coli-derived human CXCL7/NAP-2 protein
Ala59-Asp128

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ala59

Predicted Molecular Mass

7.6 kDa

Activity

Measured by its ability to chemoattract BaF3 mouse pro-B cells transfected with human CXCR2.
The ED50 for this effect is 0.200-1.60 ng/mL.

Formulation, Preparation and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 393-NP
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
Reconstitution Reconstitute at 50 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Carrier Free: 393-NP/CF
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CXCL7/NAP-2

Neutrophil Activating Peptide 2 (NAP-2), Connective Tissue Activating Protein III (CTAP-III) and beta-thrombogulin ( beta-TG), are proteolytically processed carboxyl-terminal fragments of platelet basic protein (PBP) which is found in the alpha-granules of human platelets. NAP-2 is a member of the CXC chemokines. Similar to other ELR domain containing CXC chemokines such as IL-8 and the GRO proteins, NAP-2 has been shown to bind CXCR2 and to chemoattract and activate neutrophils. Although CTAP-III, beta-TG and PBP represent amino-terminal extended variants of NAP-2 and possess the same CXC chemokine domains, these proteins do not exhibit NAP-2 activity. It has been shown that the additional amino-terminal residues of CTAP-III masks the critical ELR receptor binding domain that is exposed on NAP-2 and may account for lack of NAP-2 activity.

References

  1. Schall, T. (1994) The Cytokine Handbook, 2nd edition, A. Thomson, ed. Academic Press, New York, p. 419.
  2. Malkowski, M.G. et al. (1997) J. Mol. Biol. 266:367.

Alternate Names

CTAP III, NAP-2, NAP2, PPBP

Entrez Gene IDs

5473 (Human)

Gene Symbol

PPBP

UniProt

P02775

Additional CXCL7/NAP-2 Products

Product Documents for Recombinant Human CXCL7/NAP-2 Protein

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS 393-NP (with carrier)
Download SDS 393-NP/CF (carrier free)

Product Specific Notices for Recombinant Human CXCL7/NAP-2 Protein

For research use only

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