Recombinant Human Platelet factor 4 protein (PF4), Homo sapiens (Human), E.Coli, Tag-Free, 7.8 kDa, purity >>97% as determined by SDS-PAGE.

Recombinant Human Platelet factor 4 protein (PF4)

Recombinant Human Platelet factor 4 protein (PF4) — Chemokine released during platelet aggregation that plays a role in different biological processes including hematopoiesis, cell proliferation, differentiation, and activation. Purity >97%.

SKU: BCACP-000742 Category:
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Product SKUBCACP-000742
Product DescriptionRecombinant Human Platelet factor 4 protein (PF4) protein is expressed from E.Coli with Tag-Free. It contains 32-101aa. [Accession | P02776].
Uniprot No.P02776
Gene NamesPF4
Purity>97% as determined by SDS-PAGE.
Expression SystemE.Coli
Expression Region32-101aa
SpeciesHomo sapiens (Human)
Tag InfoTag-Free
Molecular weight7.8 kDa
ActivityFully biologically active when compared to standard. The biological activity determined by a chemotaxis bioassay using human neutrophils is in a concentration range of 10-50 ng/ml.
BufferLyophilized from a 0.2 μm filtered 20 mM Tris-HCl, 0.5 M NaCl, 6% Trehalose, pH 8.0
StorageStore at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Alternative NamesC-X-C motif chemokine 4; Chemokine (C X C motif) ligand 4; Chemokine (CXC motif) ligand 4; chemokine ligand 4; CXCL 4; CXCL4; Iroplact; MGC138298; Oncostatin A; Oncostatin-A; OncostatinA; PF 4; PF-4; PF4; Pf4a; Platelet factor 4; PLF4_HUMAN; SCYB 4; SCYB4; short form; Small inducible cytokine subfamily B; Small inducible cytokine subfamily member 4

Function

Chemokine released during platelet aggregation that plays a role in different biological processes including hematopoiesis, cell proliferation, differentiation, and activation. Acts via different functional receptors including CCR1, CXCR3A or CXCR3B. Upon interaction with CXCR3A receptor, induces activated T-lymphocytes migration mediated via downstream Ras/extracellular signal-regulated kinase (ERK) signaling.

Biological Context

Subcellular Location: Secreted

Product Specifications

Recombinant Human Platelet factor 4 protein (PF4) is a recombinant protein from Homo sapiens (Human), expressed in E.Coli, covering amino acids 32-101aa, with Tag-Free tag, molecular weight 7.8 kDa, purity >97% as determined by SDS-PAGE.. Suitable for ELISA and Western Blot applications.

SDS-PAGE: Single band at expected molecular weight confirming purity.

ELISA: Suitable as coating antigen or detection standard.

Western Blot: Compatible with standard Western Blot protocols.

Protein Interaction: Validated for SPR (Surface Plasmon Resonance) and BLI (Bio-Layer Interferometry) studies.

Shipping: Shipped at ambient temperature. Lyophilized protein is stable during transit.

Storage: Store lyophilized protein at -20°C to -80°C. Reconstituted protein should be aliquoted and stored at -80°C. Avoid repeated freeze-thaw cycles.

Shelf Life: 12 months from date of receipt when stored as recommended.

Shipping Time: Orders placed before 2 PM EST ship same day. International orders typically deliver within 5-10 business days.

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Protein Biology

Function

Chemokine released during platelet aggregation that plays a role in different biological processes including hematopoiesis, cell proliferation, differentiation, and activation (PubMed:29930254, PubMed:9531587). Acts via different functional receptors including CCR1, CXCR3A or CXCR3B (PubMed:18174362, PubMed:29930254). Upon interaction with CXCR3A receptor, induces activated T-lymphocytes migration mediated via downstream Ras/extracellular signal-regulated kinase (ERK) signaling (PubMed:18174362, PubMed:24469069). Neutralizes the anticoagulant effect of heparin by binding more strongly to heparin than to the chondroitin-4-sulfate chains of the carrier molecule. Plays a role in the inhibition of hematopoiesis and in the maintenance of hematopoietic stem cell (HSC) quiescence (PubMed:9531587). Chemotactic for neutrophils and monocytes via CCR1 (PubMed:29930254). Inhibits endothelial cell proliferation. In cooperation with toll-like receptor 8/TLR8, induces chromatin remodeling and activates inflammatory gene expression via the TBK1-IRF5 axis (PubMed:35701499). In addition, induces myofibroblast differentiation and collagen synthesis in different precursor cells, including endothelial cells, by stimulating endothelial-to-mesenchymal transition (PubMed:34986347). Interacts with thrombomodulin/THBD to enhance the activation of protein C and thus potentiates its anticoagulant activity (PubMed:9395524)

Subcellular Location

Secreted

Subunit

Homotetramer (PubMed:7547867, PubMed:8031770). Interacts with TNFAIP6 (via Link domain) (PubMed:27044744). Interacts with CCR1 (PubMed:29930254). Interacts with CXCR3 (PubMed:18174362). Interacts with THBD; this interaction enhances generation of activated protein C (PubMed:9395524)

Gene: PF4  |  Organism: Homo sapiens  |  Synonyms: C-X-C motif chemokine 4; Iroplact; Oncostatin-A
Key Publications

Frequently Asked Questions

How do I order or inquire about this product?

Fill out the Online Inquiry form with your required quantity and specifications. You can also email sales@biocrestsci.com. Our team typically responds within 4 business hours with a quote and availability confirmation.

What is the shipping and delivery time?

Orders placed before 2 PM EST ship the same day. Domestic (US) delivery typically takes 2-3 business days. International orders deliver within 5-10 business days. All products are shipped at ambient temperature with appropriate packaging to ensure stability.

How should I store this recombinant protein?

Lyophilized proteins should be stored at -20°C to -80°C upon receipt. After reconstitution, aliquot and store at -80°C. Avoid repeated freeze-thaw cycles. Shelf life is 12 months from date of receipt when stored as recommended.

What quality controls are performed on your products?

Each product undergoes SDS-PAGE purity analysis (typically >85-95%), endotoxin testing, and bioactivity validation. Products are validated for ELISA, Western Blot, and SPR/BLI applications as specified on this product page. A Certificate of Analysis (CoA) is available upon request.

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