Purity
>95%, by SDS-PAGE with silver staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. When Recombinant Mouse R‑Spondin 3 (Catalog # ) is coated at 0.25 µg/ml, Recombinant Mouse ZNRF3 Fc Chimera binds with an apparent K d <0.2 nM.
Source
Mouse myeloma cell line, NS0-derived
Mouse ZNRF3
(Lys53-Met216)
Accession # Q5SSZ7IEGRMDP Mouse IgG2a
(Glu98-Lys330)N-terminus C-terminus Accession #
N-terminal Sequence
AnalysisLys53
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
45 kDa
SDS-PAGE
51-60 kDa, reducing conditions
8328-RF |
| |
Formulation Lyophilized from a 0.2 μm filtered solution in PBS. | ||
Reconstitution Reconstitute at 100 μg/mL in PBS. | ||
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. | ||
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Data Images
ZNRF3 Binds R-Spondin 3.
| When Recombinant Mouse R‑Spondin 3 (Catalog # ) is coated onto a microplate well at 0.25 µg/mL, Recombinant Mouse ZNRF3 Fc Chimera (Catalog # 8328-RF) binds with an apparent Kd 0.2 nM. |
SDS-PAGE
| 1 μg/lane ofRecombinant Mouse ZNRF3(Catalog # 8328-RF)was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditionsand visualized by silver staining, showing bands at 54.7 and138 kDa, respectively. |
Background: ZNRF3
ZNRF3 (zinc/RING finger protein 3) is a member of the ZNRF3 family of type 1 transmembrane ubiquitin ligases (1). Mature mouse ZNRF3 consists of a 163 amino acid (aa) extracellular domain (ECD) with a protease associated (PA) domain fold, a short transmembrane segment, and a 675 aa cytoplasmic tail that contains a RING-type zinc finger with E3 ubiquitin ligase activity. Within the ECD, mouse and human ZNRF3 share 98% sequence identity. ZNRF3 is co-expressed on the cell surface with the homologous protein RNF43. Both proteins serve to inhibit the Wnt signaling pathway through the ubiquitination of LRP6 and a majority of the Frizzled family of Wnt receptors (1, 4, 6). ZNRF3 ubiquitin ligase activity is regulated jointly by R-Spondin and its cell surface receptors, Lgr4, 5, and 6 (2). The R-Spondin-Lgr complex binds to and facilitates the removal of the ZNRF3 from the plasma membrane, resulting in an enhancement of Wnt signaling (3, 4). Conversely, ZNRF3 can antagonize R-Spondin enhanced Wnt signaling (3, 5). ZNRF3 is highly expressed in crypt stem cells of the intestine where it modulates Wnt-induced cell proliferation to control the turnover of intestinal epithelial cells (6). ZNRF3 expression is down-regulated in gastric carcinomas, and ZNRF3 mutations are linked to carcinomas of the gastric tract, pancreas, liver, and ovary (7-10).
References:
de Lau, W. et al. (2014) Genes Dev. 28:305.
Xie, Y. et al. (2013) EMBO Rep. 14:1120.
Peng, W.C. et al. (2013) PLoS One 8:e83110.
Hao, H.X. et al. (2012) Nature 485:195.
Moad, H.E. and A.A. Pioszak (2013) Biochemistry 52:7295.
Koo, B.K. et al. (2012) Nature 488:665.
Ong, C.K. et al. (2012) Nat. Genet. 44:690.
Zhou, Y. et al. (2013) J. Mol. Histol. 44:555.
Ryland, G.L. et al. (2013) J. Pathol. 229:469.
Jiang, X. et al. (2013) Proc. Natl. Acad. Sci. USA 110:12649.
Long Name:
Zinc and Ring Finger 3
Entrez Gene IDs:
84133 (Human); 407821 (Mouse)
Alternate Names:
BK747E2.3; KIAA1133; novel C3HC4 type Zinc finger (ring finger); RNF203; zinc and ring finger 3; zinc/RING finger protein 3; ZNRF3
