LRPAP Antibody [Unconjugated]

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LRPAP was detected in immersion fixed A549 human lung carcinoma cell line using Goat Anti-Human LRPAP Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4296) at 10 µg/mL for 3 hours at room temperature. ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications WB, ICC/IF
Clonality
Polyclonal
Host
Goat
Conjugate
Unconjugated
Concentration
LYOPH

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Catalog# & Formulation Size Price

LRPAP Antibody [Unconjugated] Summary

Immunogen
E. coli-derived recombinant human LRPAP
Tyr35-Leu357
Accession # P30533
Specificity
Detects human LRPAP in direct ELISAs and Western blots. In Western blots, approximately 30% cross‑reactivity with recombinant mouse LRPAP is observed.
Source
N/A
Isotype
IgG
Clonality
Polyclonal
Host
Goat
Gene
LRPAP1
Purity Statement
Antigen Affinity-purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Western Blot 0.1 ug/mL
  • Immunocytochemistry 5-15 ug/mL

Packaging, Storage & Formulations

Storage
Use 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.
Buffer
Lyophilized 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.
Preservative
No Preservative
Concentration
LYOPH
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for LRPAP Antibody [Unconjugated]

  • A2MRAP
  • A2MRAPMRAP
  • A2RAP
  • alpha-2-macroglobulin receptor-associated protein 1
  • alpha-2-macroglobulin receptor-associated protein
  • alpha-2-MRAP
  • HBP44
  • lipoprotein receptor associated protein
  • low density lipoprotein receptor-related protein associated protein 1
  • Low density lipoprotein receptor-related protein-associated protein 1
  • low density lipoprotein-related protein-associated protein 1(alpha-2-macroglobulin receptor-associated protein 1)
  • LRPAP
  • LRPAP1
  • MGC138272
  • RAP

Background

LRPAP (LDL receptor-related protein-associated protein 1; also named RAP), is a ubiquitously expressed 39 kDa chaperone for LDL receptor family proteins (1, 2). Mature human LRPAP shares 77% amino acid sequence identity with mouse and rat LRPAP. It is organized into three domains of comparable length. Domains D2 and D3 interact with each other, while D1 is independent (3). The D1 domain contains a low affinity binding site for LRP, and the associated D2 and D3 domains bind LRP with high affinity (4). The majority of LRPAP is localized in the endoplasmic reticulum and Golgi (5). LRPAP prevents the premature interaction of LRP, LRP2/megalin, and VLDLR with their coexpressed ligands, thereby promoting proper receptor folding and export from the ER (6‑8). Protonation of conserved histidine residues within the D3 domain induces the separation of LRPAP and LRP in the relatively acidic Golgi (9). LRPAP, which contains a C-terminal HNEL motif, can then recycle to the ER (9). A minor amount of LRPAP remains associated with LRP and can modulate receptor activity on the cell surface (5). Exogenously applied LRPAP competitively inhibits LDL receptor family binding and uptake of activated alpha 2-macroglobulin, apoB100- or apoE-enriched LDL and VLDL particles, cholesteryl esters, and complexes of PAI-1 with either tPA or uPA (10‑14).

  1. Strickland, D.K. et al. (1991) J. Biol. Chem. 266:13364.
  2. Bu, G. (2001) Int. Rev. Cytol. 209:79.
  3. Lazic, A. et al. (2003) Biochemistry 42:14913.
  4. Lazic, A. et al. (2006) Arch. Biochem. Biophys. 450:167.
  5. Bu, G. et al. (1994) J. Biol. Chem. 269:29874.
  6. Willnow, T.E. et al. (1996) EMBO J. 15:2632.
  7. Bu, G. and S. Rennke (1996) J. Biol. Chem. 271:22218.
  8. Obermoeller, L.M. et al. (1997) J. Biol. Chem. 272:10761.
  9. Lee, D. et al. (2006) Mol. Cell 22:423.
  10. Williams, S.E. et al. (1992) J. Biol. Chem. 267:9035.
  11. Medh, J.D. et al. (1995) J. Biol. Chem. 270:536.
  12. Herz, J. et al. (1991) J. Biol. Chem. 266:21232.
  13. Mokuno, H. et al. (1994) J. Biol. Chem. 269:13238.
  14. Orth, K. et al. (1992) Proc. Natl. Acad. Sci. 89:7422.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Bioinformatics

Gene Symbol LRPAP1
Uniprot