Human sFRP-4 Alexa Fluor® 532-conjugated Antibody

Catalog #: AF1827X Datasheet / COA / SDS

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AF1827X-100UG

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Human sFRP-4 Alexa Fluor® 532-conjugated Antibody Summary

Species Reactivity

Human

Specificity

Detects human sFRP-4 in direct ELISAs and Western blots. In direct ELISAs, approximately 50% cross-reactivity with recombinant mouse (rm) sFRP-4 is observed, and less than 5% cross-reactivity with recombinant human (rh) sFRP-3, rhsFRP-1, and rms

Source

Polyclonal Goat IgG

Purification

Antigen Affinity-purified

Immunogen

Mouse myeloma cell line NS0-derived recombinant human sFRP-4
Ala22-Val346
Accession # AAC04617

Formulation

Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Label

Alexa Fluor 532 (Excitation= 534 nm, Emission= 553 nm)

Applications

Recommended Concentration

Sample

Western Blot

Optimal dilution of this antibody should be experimentally determined.

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.

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Preparation and Storage

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied

Background: sFRP-4

sFRP-4, also known as DDC-4, Frp, FRPHE and Secreted Frizzled Related Protein 4, is a 50-55 kDa glycoprotein expressed in brain, kidney, lung, ovary, prostate, mammary gland, and endometrium (1, 2). This protein shows complex functions with respect to cell survival: it is up‑regulated with apoptosis during ovulation (3), regulates apoptosis in chondrocytes (4), and promotes apoptosis in mammary glands when expressed in transgenic mice (5). On the other hand, sFRP-4 can also act to enhance growth as it is up‑regulated in endometrial and breast carcinomas (6, 7). Since it is not detected in other carcinomas such as the ovary, colon, and pancreas, this suggest that its role in cancer is likely to be tissue dependent (6). In addition sFRP-4 is characterized as a circulating phosphaturic factor expressed by tumors associated with osteomalacia that antagonizes renal Wnt signaling (7). Of all the secreted frizzled related proteins, sFRP-4 is most closely related to sFRP-3 (1). Mouse and human sFRP-4 proteins share 92% aa identity.

Long Name

Secreted Frizzled Related Protein 4

Entrez Gene IDs

6424 (Human); 20379 (Mouse); 89803 (Rat)

Alternate Names

DDC-4; Frizzled protein, human endometrium; FRP-4; FRP-AP; frpHE; FRPHEMGC26498; FrzB2; secreted frizzled-related protein 4; secreted frizzled-related protein 4; secreted frizzled-related protein 4; sFRP4; sFRP-4