
- Species ReactivityHuman, Rat
- SpecificityDetects human and rat LRP-4 in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant human (rh) LRP-1, rhLRP-1B, rhLRP-5, rhLRP-6, and rhLDL R is observed.
- SourcePolyclonal Sheep IgG
- PurificationAntigen Affinity-purified
- ImmunogenE. coli-derived recombinant human LRP-4
Gly18-Ser344
Accession # O75096 - FormulationLyophilized 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.
- LabelUnconjugated
- Western Blot1 µg/mLSee below
- Immunohistochemistry5-15 µg/mLSee below
- ReconstitutionReconstitute at 0.2 mg/mL in sterile PBS.
- ShippingThe 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 & StorageUse 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.
- Long Name:LDL Receptor-related Protein 4
- Entrez Gene IDs:4038 (Human); 228357 (Mouse); 83469 (Rat)
- Alternate Names:CLSS; KIAA0816; low density lipoprotein receptor-related protein 4; low-density lipoprotein receptor-related protein 4; LRP10; LRP4; LRP-4; MEGF7LRP10; Multiple epidermal growth factor-like domains 7
Background:
LRP‑4 (Low density lipoprotein-related protein #4; also MEGF7 and LRP13) is a 220-270 kDa glycoprotein, member of the LDLR family of proteins. It is expressed on neurons, oocytes, spermatogonia and skeletal muscle cells, and binds multiple ligands, including WISE, apoE, MuSK and neuronal Agrin. It serves to negatively regulate Wnt signaling during development, and to cluster AChRs at neuromuscular junctions. Mature human LRP‑4 is an 1885 amino acid (aa) type I transmembrane glycoprotein. It contains a 1705 aa extracellular domain (ECD) (aa 21-1725) plus a 159 aa cytoplasmic region (aa 1747-1905). In the ECD, there are eight LDLR class A repeats (aa 26-350), two EGF-like repeats (aa 354-434) and 20 LDLR class B repeats that contain an intervening EGF-like domain (aa 480-1610). Over aa 18-344, human LRP‑4 shares 88% aa identity with mouse LRP‑4.
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