Not available outside of the UK & Ireland.

Biochem/physiol Actions

Platelet factor-4 (PF-4) is chemotactic towards neutrophils and monocytes and has been shown to inhibit angiogenesis. This protein associates with heparin and neutralizes it. It also neutralizes various negatively charged proteoglycans.

General description

Platelet factor-4 (PF-4) is a CXC chemokine that is expressed in megakaryocytes and stored in the alpha-granules of platelets. The gene encoding this protein is localized on human chromosome 4. Recombinant human PF-4 is a 7.8kDa protein containing 70 amino acid residues, including the four highly conserved residues present in CXC chemokines.

Physical form

Lyophilized with no additives.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Sequence

EAEEDGDLQC LCVKTTSQVR PRHITSLEVI KAGPHCPTAQ LIATLKNGRK ICLDLQAPLY KKIIKKLLES