Human FAM3B Isoform B Antibody

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Product Details
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Human FAM3B Isoform B Antibody Summary

Species Reactivity
Detects human FAM3B in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 35% cross‑reactivity with recombinant mouse FAM3B is observed and less than 5% cross-reactivity with recombinant human FAM3C is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human FAM3B isoform B
Accession # P58499
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
0.1 µg/mL
Recombinant Human FAM3B Isoform B

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.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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: FAM3B

FAM3B, also known as Pancreatic-derived factor (PANDER), is a secreted 23 kDa glycoprotein that belongs to the cytokine like-protein family. Members of this family share a four-helix bundle secondary structure similar to that found in many cytokines. As a result of alternative splicing and alternate signal peptide cleavage sites, multiple isoforms are known. FAM3B is expressed by pancreatic islet alpha and beta -cells, reproductive epithelium and a subset of neurons. Recombinant FAM3B has been shown to induce beta -cell apoptosis. The amino acid sequence of mature human FAM3B is 80% identical to that of mature mouse FAM3B.

Long Name
Family With Sequence Similarity 3, Member B
Entrez Gene IDs
54097 (Human)
Alternate Names
2-21; C21orf11; C21orf76PANDER; chromosome 21 open reading frame 11; Cytokine-like protein 2-21; D21M16SJHU19e; FAM3B; family with sequence similarity 3, member B; ORF9; pancreatic derived factor; Pancreatic-derived factor; PANDER; PRED44

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

Goat IgG (H+L) Antibody


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