Frizzled 4 (Frizzled-4, Frizzled (Drosophila) Homolog 4, Fz 4, Fz-4, FZD4, FZD4S, FzE4, CD344 Antigen, EVR1, FEVR, GPCR, hFz4, MGC34390, WNT Receptor Frizzled-4, Exudative vitreoretinopathy 1 Autosomal Dominant Criswick-Schepens Syndrome) (Control Peptide

For Research Use Only. Not for use in diagnostic procedures.

Chromosome: 11; NC_000011.9 (86656717..86666440, complement). Location: 11q14.2

Recognizes human FNIP1. Species Crossreactivity: rat.

Highly Purified
Highly Purified

Supplied as a lyophilized powder in PBS.

May be stored at 4 degree C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20 degree C. Aliquots are stable for at least 12 months at -20 degree C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Small volumes of FZD4 peptide vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

C-terminus of aa-DEEERRCDPIRIS.

Molecular Biology; MB-Disease Markers

ELISA (EL/EIA)

Suitable for use in ELISA.

59,881 Da[Similar Products]

frizzled family receptor 4

frizzled-4; frizzled homolog 4; WNT receptor frizzled-4; frizzled 4, seven transmembrane spanning receptor

Frizzled-4

Fz-4; hFz4??[Similar Products]

FZD4_HUMAN

This gene is a member of the frizzled gene family. Members of this family encode seven-transmembrane domain proteins that are receptors for the Wingless type MMTV integration site family of signaling proteins. Most frizzled receptors are coupled to the beta-catenin canonical signaling pathway. This protein may play a role as a positive regulator of the Wingless type MMTV integration site signaling pathway. A transcript variant retaining intronic sequence and encoding a shorter isoform has been described, however, its expression is not supported by other experimental evidence. [provided by RefSeq, Jul 2008]

Function: Receptor for Wnt proteins. Most of frizzled receptors are coupled to the beta-catenin (CTNNB1) canonical signaling pathway, which leads to the activation of disheveled proteins, inhibition of GSK-3 kinase, nuclear accumulation of beta-catenin (CTNNB1) and activation of Wnt target genes. Plays a critical role in retinal vascularization by acting as a receptor for Wnt proteins and norrin (NDP). In retina, it can be both activated by Wnt protein-binding, but also by a Wnt-independent signaling via binding of norrin (NDP), promoting in both cases beta-catenin (CTNNB1) accumulation and stimulation of LEF/TCF-mediated transcriptional programs. A second signaling pathway involving PKC and calcium fluxes has been seen for some family members, but it is not yet clear if it represents a distinct pathway or if it can be integrated in the canonical pathway, as PKC seems to be required for Wnt-mediated inactivation of GSK-3 kinase. Both pathways seem to involve interactions with G-proteins. May be involved in transduction and intercellular transmission of polarity information during tissue morphogenesis and/or in differentiated tissues.

Subunit structure: Interacts with MAGI3 and norrin (NDP). Component of a complex, at least composed of TSPAN12, FZD4 and norrin (NDP)

By similarity.

Subcellular location: Membrane; Multi-pass membrane protein. Cell membrane; Multi-pass membrane protein

By similarity.

Tissue specificity: Almost ubiquitous. Largely expressed in ***** heart, skeletal muscle, ovary, and fetal kidney. Moderate amounts in ***** liver, kidney, pancreas, spleen, and fetal lung, and small amounts in placenta, ***** lung, prostate, testis, colon, fetal brain and liver.

Domain: Lys-Thr-X-X-X-Trp motif interacts with the PDZ doman of Dvl (Disheveled) family members and is involved in the activation of the Wnt/beta-catenin signaling pathway

By similarity.The FZ domain is involved in binding with Wnt ligands

By similarity.

Post-translational modification: Ubiquitinated by ZNRF3, leading to its degradation by the proteasome. Ref.7

Involvement in disease: Vitreoretinopathy, exudative 1 (EVR1) [MIM:133780]: A disorder of the retinal vasculature characterized by an abrupt cessation of growth of peripheral capillaries, leading to an avascular peripheral retina. This may lead to compensatory retinal neovascularization, which is thought to be induced by hypoxia from the initial avascular insult. New vessels are prone to leakage and rupture causing exudates and bleeding, followed by scarring, retinal detachment and blindness. Clinical features can be highly variable, even within the same family. Patients with mild forms of the disease are asymptomatic, and their only disease related abnormality is an arc of avascular retina in the extreme temporal periphery. In many ways the disease resembles retinopathy of prematurity but there is no evidence of prematurity or small birth weight in the patient history.Note: The disease is caused by mutations affecting the gene represented in this entry. Ref.8 Ref.9 Ref.10 Ref.11 Ref.12 Ref.13 Ref.14 Ref.15 Ref.16 Ref.18 Ref.19 Ref.20 Ref.21

Sequence similarities: Belongs to the G-protein coupled receptor Fz/Smo family.Contains 1 FZ (frizzled) domain.

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