Rabbit Lrp2/Megalin Polyclonal Antibody | anti-Lrp2 antibody

Lrp2/Megalin Antibody

Cat. Num. AAA9604407

• Gene Names: LRP2; DBS; GP330; LRP-2
• Reactivity: Human, Mouse, Rat
• Applications: Western Blot, ELISA
• Purity: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin.
• Synonyms: Lrp2/Megalin; Polyclonal Antibody; Lrp2/Megalin Antibody; Calcium sensor protein; DBS; Glycoprotein 330; gp330; Heymann nephritis antigen homolog; Low-density lipoprotein receptor-related protein 2; LRP-2; Lrp2; LRP2_HUMAN; Megalin; anti-Lrp2 antibody

• Host: Rabbit
• Reactivity: Human, Mouse, Rat
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: Lrp2/Megalin antibody detects endogenous levels of total Lrp2/Megalin
• Purity/Purification: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin.
• Form/Format: Liquid; Phosphate buffered saline, pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)
• Sequence Length: 4655

• Applicable Applications for anti-Lrp2 antibody: Western Blot (WB), ELISA (EIA)
• Application Notes: WB: 1:1000-3000
• Immunogen: A synthesized peptide derived from human Lrp2/Megalin
• Subcellular Location: Membrane. Membrane > Coated Pit.
• Tissue Specificity: Expressed in first and third trimester cytotrophoblasts in the placenta (at protein level) (PubMed:27798286). Absorptive epithelia, including renal proximal tubules.
• Predicted Cross Reactivity: Horse
• Similarity: Horse (89%)
• Conjugation: Unconjugated
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of Lrp2/Megalin using COLO205 whole cell lysates)

Related Product Information for anti-Lrp2 antibody

Function: Multiligand endocytic receptor (By similarity). Acts together with CUBN to mediate endocytosis of high-density lipoproteins (By similarity). Mediates receptor-mediated uptake of polybasic drugs such as aprotinin, aminoglycosides and polymyxin B (By similarity). In the kidney, mediates the tubular uptake and clearance of leptin (By similarity). Also mediates transport of leptin across the blood-brain barrier through endocytosis at the choroid plexus epithelium (By similarity). Endocytosis of leptin in neuronal cells is required for hypothalamic leptin signaling and leptin-mediated regulation of feeding and body weight (By similarity). Mediates endocytosis and subsequent lysosomal degradation of CST3 in kidney proximal tubule cells (By similarity). Mediates renal uptake of 25-hydroxyvitamin D3 in complex with the vitamin D3 transporter GC/DBP (By similarity). Mediates renal uptake of metallothionein-bound heavy metals (PubMed:15126248). Together with CUBN, mediates renal reabsorption of myoglobin (By similarity). Mediates renal uptake and subsequent lysosomal degradation of APOM (By similarity). Plays a role in kidney selenium homeostasis by mediating renal endocytosis of selenoprotein SEPP1 (By similarity). Mediates renal uptake of the antiapoptotic protein BIRC5/survivin which may be important for functional integrity of the kidney (PubMed:23825075). Mediates renal uptake of matrix metalloproteinase MMP2 in complex with metalloproteinase inhibitor TIMP1 (By similarity). Mediates endocytosis of Sonic hedgehog protein N-product (ShhN), the active product of SHH (By similarity). Also mediates ShhN transcytosis (By similarity). In the embryonic neuroepithelium, mediates endocytic uptake and degradation of BMP4, is required for correct SHH localization in the ventral neural tube and plays a role in patterning of the ventral telencephalon (By similarity). Required at the onset of neurulation to sequester SHH on the apical surface of neuroepithelial cells of the rostral diencephalon ventral midline and to control PTCH1-dependent uptake and intracellular trafficking of SHH (By similarity). During neurulation, required in neuroepithelial cells for uptake of folate bound to the folate receptor FOLR1 which is necessary for neural tube closure (By similarity). In the adult brain, negatively regulates BMP signaling in the subependymal zone which enables neurogenesis to proceed (By similarity). In astrocytes, mediates endocytosis of ALB which is required for the synthesis of the neurotrophic factor oleic acid (By similarity). Involved in neurite branching (By similarity). During optic nerve development, required for SHH-mediated migration and proliferation of oligodendrocyte precursor cells (By similarity). Mediates endocytic uptake and clearance of SHH in the retinal margin which protects retinal progenitor cells from mitogenic stimuli and keeps them quiescent (By similarity). Plays a role in reproductive organ development by mediating uptake in reproductive tissues of androgen and estrogen bound to the sex hormone binding protein SHBG (By similarity). Mediates endocytosis of angiotensin-2 (By similarity). Also mediates endocytosis of angiotensis 1-7 (By similarity). Binds to the complex composed of beta-amyloid protein 40 and CLU/APOJ and mediates its endocytosis and lysosomal degradation (By similarity). Required for embryonic heart development (By similarity). Required for normal hearing, possibly through interaction with estrogen in the inner ear (By similarity).
Subunit Structure: Binds plasminogen, extracellular matrix components, plasminogen activator-plasminogen activator inhibitor type I complex, apolipoprotein E-enriched beta-VLDL, lipoprotein lipase, lactoferrin, CLU/clusterin and calcium (PubMed:7768901). Forms a multimeric complex together with LRPAP1 (PubMed:1400426). Interacts (via PxLPxI/L motif) with ANKRA2 (via ankyrin repeats) (By similarity). Interacts with LRP2BP (PubMed:12508107). Interacts (via NPXY motif) with DAB2; the interaction is not affected by tyrosine phosphorylation of the NPXY motif (PubMed:10769163, PubMed:15134832). Interacts with MB (By similarity). Interacts with BMP4 (By similarity). Interacts with the Sonic hedgehog protein N-product which is the active product of SHH (By similarity). Interacts with CST3 in a calcium-dependent manner (PubMed:17462596). Interacts with the vitamin-D binding protein GC/DBP (By similarity). Interacts with sex hormone-binding protein SHBG (PubMed:16143106). Interacts with angiotensin-2 (By similarity). Also interacts with angiotensin 1-7 (By similarity). Interacts with APOM (By similarity). Interacts with selenoprotein SEPP1 (By similarity). Interacts with LEP (By similarity). Interacts with ALB (By similarity). Interacts with the antiapoptotic protein BIRC5/survivin (PubMed:23825075). Interacts with matrix metalloproteinase MMP2 in complex with metalloproteinase inhibitor TIMP1 (By similarity). In neurons, forms a trimeric complex with APP and APPB1/FE65 (By similarity). Interacts with LDLRAP1/ARH; mediates trafficking of LRP2 to the endocytic recycling compartment (By similarity). Does not interact with beta-amyloid protein 40 alone but interacts with the complex composed of beta-amyloid protein 40 and CLU/APOJ (By similarity).
Post-translational Modifications: A fraction undergoes proteolytic cleavage of the extracellular domain at the cell membrane to generate a cytoplasmic tail fragment. This is internalized into the early endosome from where it trafficks in an LDLRAP1/ARH-dependent manner to the endocytic recycling compartment (ERC). In the ERC, it is further cleaved by gamma-secretase to release a fragment which translocates to the nucleus and mediates transcriptional repression. N-glycosylation is required for ligand binding.
Similarity: Two overlapping PxLPxI/L motifs mediate interaction with ankyrin repeats of ANKRA2.The cytoplasmic domain is required for sorting to the apical cell membrane. Belongs to the LDLR family.

NCBI and Uniprot Product Information

• NCBI GI #: 126012573
• NCBI GeneID: 4036
• NCBI Accession #: NP_004516.2
• NCBI GenBank Nucleotide #: NM_004525.3
• UniProt Accession #: P98164; O00711; Q16215
• Molecular Weight: Observed: 280 kDa; Predicted: 522 kDa
• NCBI Official Full Name: low-density lipoprotein receptor-related protein 2
• NCBI Official Synonym Full Names: LDL receptor related protein 2
• NCBI Official Symbol: LRP2
• NCBI Official Synonym Symbols: DBS; GP330; LRP-2
• NCBI Protein Information: low-density lipoprotein receptor-related protein 2
• UniProt Protein Name: Low-density lipoprotein receptor-related protein 2
• Protein Family: Low-density lipoprotein receptor-related protein
• UniProt Gene Name: LRP2
• UniProt Synonym Gene Names: LRP-2; gp330

NCBI Description

The protein encoded by this gene, low density lipoprotein-related protein 2 (LRP2) or megalin, is a multi-ligand endocytic receptor that is expressed in many different tissues but primarily in absorptive epithilial tissues such as the kidney. This glycoprotein has a large amino-terminal extracellular domain, a single transmembrane domain, and a short carboxy-terminal cytoplasmic tail. The extracellular ligand-binding-domains bind diverse macromolecules including albumin, apolipoproteins B and E, and lipoprotein lipase. The LRP2 protein is critical for the reuptake of numerous ligands, including lipoproteins, sterols, vitamin-binding proteins, and hormones. This protein also has a role in cell-signaling; extracellular ligands include parathyroid horomones and the morphogen sonic hedgehog while cytosolic ligands include MAP kinase scaffold proteins and JNK interacting proteins. Recycling of this membrane receptor is regulated by phosphorylation of its cytoplasmic domain. Mutations in this gene cause Donnai-Barrow syndrome (DBS) and facio-oculoacoustico-renal syndrome (FOAR).[provided by RefSeq, Aug 2009]

Uniprot Description

Multiligand endocytic receptor (). Acts together with CUBN to mediate endocytosis of high-density lipoproteins (). Mediates receptor-mediated uptake of polybasic drugs such as aprotinin, aminoglycosides and polymyxin B (). In the kidney, mediates the tubular uptake and clearance of leptin (). Also mediates transport of leptin across the blood-brain barrier through endocytosis at the choroid plexus epithelium (). Endocytosis of leptin in neuronal cells is required for hypothalamic leptin signaling and leptin-mediated regulation of feeding and body weight (). Mediates endocytosis and subsequent lysosomal degradation of CST3 in kidney proximal tubule cells (). Mediates renal uptake of 25-hydroxyvitamin D3 in complex with the vitamin D3 transporter GC/DBP (). Mediates renal uptake of metallothionein-bound heavy metals (PubMed:15126248). Together with CUBN, mediates renal reabsorption of myoglobin (). Mediates renal uptake and subsequent lysosomal degradation of APOM (). Plays a role in kidney selenium homeostasis by mediating renal endocytosis of selenoprotein SEPP1 (). Mediates renal uptake of the antiapoptotic protein BIRC5/survivin which may be important for functional integrity of the kidney (PubMed:23825075). Mediates renal uptake of matrix metalloproteinase MMP2 in complex with metalloproteinase inhibitor TIMP1 (). Mediates endocytosis of Sonic hedgehog protein N-product (ShhN), the active product of SHH (). Also mediates ShhN transcytosis (). In the embryonic neuroepithelium, mediates endocytic uptake and degradation of BMP4, is required for correct SHH localization in the ventral neural tube and plays a role in patterning of the ventral telencephalon (). Required at the onset of neurulation to sequester SHH on the apical surface of neuroepithelial cells of the rostral diencephalon ventral midline and to control PTCH1-dependent uptake and intracellular trafficking of SHH (). During neurulation, required in neuroepithelial cells for uptake of folate bound to the folate receptor FOLR1 which is necessary for neural tube closure (). In the adult brain, negatively regulates BMP signaling in the subependymal zone which enables neurogenesis to proceed (). In astrocytes, mediates endocytosis of ALB which is required for the synthesis of the neurotrophic factor oleic acid (). Involved in neurite branching (). During optic nerve development, required for SHH-mediated migration and proliferation of oligodendrocyte precursor cells (). Mediates endocytic uptake and clearance of SHH in the retinal margin which protects retinal progenitor cells from mitogenic stimuli and keeps them quiescent (). Plays a role in reproductive organ development by mediating uptake in reproductive tissues of androgen and estrogen bound to the sex hormone binding protein SHBG (). Mediates endocytosis of angiotensin-2 (). Also mediates endocytosis of angiotensis 1-7 (). Binds to the complex composed of beta-amyloid protein 40 and CLU/APOJ and mediates its endocytosis and lysosomal degradation (). Required for embryonic heart development (). Required for normal hearing, possibly through interaction with estrogen in the inner ear ().