NAMPT Protein, Human, Recombinant (His)

Pre-B cell colony enhancing factor (PBEF) was originally identified as a cytokine that potentiated the clonal expansion and differentiation of pre-B cells, but it is also acknowledged to be the ubiquitous intracellular enzyme nicotinamide phosphoribosyltranferase (NAMPT) and the adipokine “visfatin”. PBEF is constitutively expressed in the fetal membranes where its greatest expression is in the amnion. It has intracellular and extracellular forms. Most of the intracellular functions of PBEF are due to its role as a Nampt which can induce angiogenesis through upregulation of VEGF and VEGFR and secretion of MCP-1. Extracellular PBEF has been shown to increase inflammatory cytokines, such as TNF-α, IL-1β, IL-16, and TGF-β1. PBEF also increases the production of IL-6, TNF-α, and IL-1β in CD14+ monocyctes, macrophages, and dendritic cells, enhances the effectiveness of T cells.

Pack Size	Availability	Price/USD
10 μg	5 days	$ 116.00
50 μg	5 days	$ 310.00
500 μg	5 days	$ 1,900.00
1 mg	5 days	$ 2,730.00

Pack Size

Availability

Price/USD

Quantity

10 μg

5 days

$ 116.00

50 μg

5 days

$ 310.00

500 μg

5 days

$ 1,900.00

1 mg

5 days

$ 2,730.00

Description

Species	Human
Expression System	E. coli
Tag	N-6His
Accession Number	P43490
Synonyms	PBEF, PBEF1, Nicotinamide phosphoribosyltransferase, NAmPRTase, Pre-B cell-enhancing factor, NAMPT, Pre-B-cell colony-enhancing factor 1, Visfatin
Amino Acid	Met1-His491
Construction	Recombinant Human Pre-B-Cell Colony-Enhancing Factor 1 is produced by our E.coli expression system and the target gene encoding Met1-His491 is expressed with a 6His tag at the N-terminus.
Protein Purity	Greater than 90% as determined by reducing SDS-PAGE. (QC verified)
Molecular Weight	55 KDa, reducing conditions

Endotoxin	Less than 1 EU/µg as determined by LAL test.
Formulation	Lyophilized from a 0.2 μm filtered solution of 20mM PB, 10% Trehalose, 100mM Arg-HCl, 0.02% Tween 80, pH6.0.
Reconstitution	Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Stability & Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Research Background	Pre-B cell colony enhancing factor (PBEF) was originally identified as a cytokine that potentiated the clonal expansion and differentiation of pre-B cells, but it is also acknowledged to be the ubiquitous intracellular enzyme nicotinamide phosphoribosyltranferase (NAMPT) and the adipokine “visfatin”. PBEF is constitutively expressed in the fetal membranes where its greatest expression is in the amnion. It has intracellular and extracellular forms. Most of the intracellular functions of PBEF are due to its role as a Nampt which can induce angiogenesis through upregulation of VEGF and VEGFR and secretion of MCP-1. Extracellular PBEF has been shown to increase inflammatory cytokines, such as TNF-α, IL-1β, IL-16, and TGF-β1. PBEF also increases the production of IL-6, TNF-α, and IL-1β in CD14+ monocyctes, macrophages, and dendritic cells, enhances the effectiveness of T cells.

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NAMPT Protein, Human, Recombinant (His)

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