Human FOLR4 Antibody

Catalog # Availability Size / Price Qty
AF6328
AF6328-SP
Human FOLR4 Antibody in Western Blot
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Human FOLR4 Antibody Summary

Species Reactivity
Human
Specificity
Detects human FOLR4 in direct ELISAs and Western blots. In direct ELISAs, less than 5% cross-reactivity with recombinant human (rh) FOLR1, rhFOLR2, and rhFOLR3 is observed.
Source
Polyclonal Sheep IgG
Purification
Antigen Affinity-purified
Immunogen
E. coli-derived recombinant human FOLR4
Glu134-Asn210
Accession # NP_001073955
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
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.

Data Example

Western Blot Detection of Human FOLR4 by Western Blot. View Larger

Detection of Human FOLR4 by Western Blot. Western blot shows lysates of A431 human epithelial carcinoma cell line. PVDF Membrane was probed with 1 µg/mL of Sheep Anti-Human FOLR4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6328) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for FOLR4 at approximately 36 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

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
Shipping
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: FOLR4

FOLR4 (Folate receptor 4; also FR4 and folate receptor δ and folate binding protein 3) is a 34‑36 kDa member of the folate receptor family of molecules. Based on mouse, it appears to be a marker for subsets of T cells. In particular, and in conjunction with CD25, FR4hiCD25hi expression defines T reg cells, FR4loCD25+ expression pattern identifies effector memory T cells, and a FR4hiCD25- combination characterizes central memory T cells. Mature human FOLR4 is 225 amino acids (aa) in length (aa 20‑244). It contains virtually no identifiable motifs. There is one potential splice variant that shows a five aa substitution for aa 111‑116. Over aa 134‑220, human FOLR4 shares 72% aa identity with mouse FOLR4.

Long Name
Folate Receptor 4
Entrez Gene IDs
390243 (Human); 64931 (Mouse); 690037 (Rat)
Alternate Names
folate receptor 4 (delta) homolog (mouse); Folbp3; FOLR4; FR-delta; LOC390243; probable folate receptor delta

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