Pref-1/DLK1/FA1 Antibody (1168B) [Alexa Fluor® 350]


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Product Details

Reactivity MuSpecies Glossary
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Alexa Fluor 350

Pref-1/DLK1/FA1 Antibody (1168B) [Alexa Fluor® 350] Summary

Additional Information
Recombinant Monoclonal Antibody.
Mouse myeloma cell line NS0-derived recombinant mouse Pref-1/DLK1/FA1
Accession # Q09163
Detects mouse Pref-1 in direct ELISAs.
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Test in a species/application not listed above to receive a full credit towards a future purchase.


  • Flow Cytometry 0.25-1 ug/10^6 cells

Packaging, Storage & Formulations

Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.


This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Pref-1/DLK1/FA1 Antibody (1168B) [Alexa Fluor® 350]

  • delta-like 1 homolog (Drosophila)
  • DLK
  • DLK1
  • DLK-1
  • FA1
  • FA1fetal antigen 1
  • pG2
  • pG2delta-like homolog (Drosophila)
  • preadipocyte factor 1
  • Pref1
  • Pref-1
  • protein delta homolog 1
  • secredeltin
  • ZOG


Pref-1 (Preadipocyte factor 1), also known as Protein delta homolog 1, DLK1, FA1 and Fetal antigen 1, is a 45-60 kDa transmembrane glycoprotein that is highly expressed in fetal liver, placenta, adult adrenal gland, brain, testis and ovary. Expression of Pref-1 is elevated in liver after birth but starts to decline around postnatal day 16. Mature mouse Pref-1 is a 362 amino acid (aa) type I transmembrane N- and O-linked glycoprotein.  It contains a 282 aa extracellular region (aa 24-305), a 24 aa transmembrane segment (aa 306-329), and a 56 aa cytoplasmic domain (aa 330-385).  It contains 6 EGF-like domains and is involved in embryonic skeletal system development. Pref-1 inhibits preadipocyte proliferation by regulating their entry into G1/S-phase and represses preadipocyte differentiation. It is a master regulator of preadipocyte homeostasis and adipose tissue expansion. Pref-1 manipulation may, therefore, be utilized in obesity treatments. Mouse Pref-1 shares 85% and 94% aa identity with human and rat Pref-1, respectively


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Secondary Antibodies


Isotype Controls

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