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Key Documents

SRP3142

Sigma-Aldrich

PF-4 (CXCL4) human

recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

Synonyme(s) :

CXCL4, Ironplact, Oncostatin A, Platelet Factor-4

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About This Item

Code UNSPSC :
12352202
Nomenclature NACRES :
NA.32

Source biologique

human

Produit recombinant

expressed in E. coli

Pureté

≥98% (HPLC)
≥98% (SDS-PAGE)

Forme

lyophilized

Puissance

1.0-10.0 ng/mL

Poids mol.

7.8 kDa

Conditionnement

pkg of 20 μg

Technique(s)

cell culture | mammalian: suitable

Impuretés

<0.1 EU/μg endotoxin, tested

Couleur

white

Numéro d'accès UniProt

P02776

Conditions d'expédition

wet ice

Température de stockage

−20°C

Informations sur le gène

human ... PF4(5196)

Catégories apparentées

Description générale

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.

Actions biochimiques/physiologiques

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.

Séquence

EAEEDGDLQC LCVKTTSQVR PRHITSLEVI KAGPHCPTAQ LIATLKNGRK ICLDLQAPLY KKIIKKLLES

Forme physique

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.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

Chemokines and Chemokine Receptors
Manel Juan
Wiley Guide to Chemical Incompatibilities (2013)
B Scheuerer et al.
Blood, 95(4), 1158-1166 (2000-02-09)
Unstimulated monocytes rapidly undergo physiological changes resulting in programmed cell death (apoptosis) while stimuli promoting differentiation of these cells into macrophages were shown to inhibit apoptotic processes. In the present study, we report that the platelet-derived alpha-chemokine platelet factor 4
S S Huang et al.
The Journal of biological chemistry, 257(19), 11546-11550 (1982-10-10)
A large scale purification procedure for the human platelet factor 4 proteoglycan carrier molecule has been developed. A yield of 46% and a 33,000-fold purification have been achieved, using poly-L-lysine-Sepharose affinity column chromatography, PF4-agarose affinity column chromatography, and Bio-Gel A-0.5m
CXCL4-platelet factor 4, heparin-induced thrombocytopenia and cancer.
Sandset PM
Thrombosis Research, 129, S97-100 (2012)
Yong Du et al.
The Journal of experimental medicine, 219(7) (2022-06-01)
Chemokines control the migratory patterns and positioning of immune cells to organize immune responses to pathogens. However, many chemokines have been associated with systemic autoimmune diseases that have chronic IFN signatures. We report that a series of chemokines, including CXCL4
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