Rat PBEF/Visfatin Antibody

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Detection of Rat PBEF by Western Blot.
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Product Details
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Rat PBEF/Visfatin Antibody Summary

Species Reactivity
Detects rat PBEF/Visfatin in direct ELISAs and Western blots. In direct ELISAs, approximately 25% cross‑reactivity with recombinant mouse PBEF and recombinant human PBEF is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
S. frugiperda insect ovarian cell line Sf 21derived recombinant rat PBEF/Visfatin
Accession # Q80Z29
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
1 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Rat PBEF antibody by Western Blot. View Larger

Detection of Rat PBEF by Western Blot. Western blot shows lysates of H4-II-E-C3 rat hepatoma cell line and rat liver tissue. PVDF Membrane was probed with 1 µg/mL of Goat Anti-Rat PBEF Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6384) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for PBEF at approximately 54 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: PBEF/Visfatin

PBEF (pre-B cell colony-enhancing factor; also visfatin and nicotinamide phosphoribosyltransferase/Nampt) is a 52‑54 kDa member of the NAPRTase family of molecules. It is a dimer that is found both intracellularly and extracellularly, where it participates in NAD synthesis and induces proinflammatory cytokine synthesis, respectively. PBEF has also been reported to show insulin-like effects on adipocytes by binding to the insulin receptor. Cells known to express PBEF include visceral adipocytes, neutrophils, and capillary endothelium. Rat PBEF is 491 amino acids in length. It contains no signal sequence but is secreted. Potential phosphorylation sites exist at Tyr34, Tyr188 and Ser398. Full‑length (aa 1‑491) rat PBEF shares 99% and 95% aa identity with mouse and human PBEF, respectively.

Long Name
Pre-B-Cell Colony-Enhancing Factor 1
Entrez Gene IDs
10135 (Human); 59027 (Mouse); 297508 (Rat)
Alternate Names
EC; MGC117256; NAmPRTase; NAMPT; nicotinamide phosphoribosyltransferase; NMPRTase; PBEF; PBEF1; PBEF1110035O14Rik; PBEF1DKFZp666B131; Pre-B cell-enhancing factor; pre-B-cell colony enhancing factor 1; Pre-B-cell colony-enhancing factor 1; VF; Visfatin

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