Human LDLR Antibody Summary
Asp193-Arg788
Accession # P01130
*Small pack size (-SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Applications
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Scientific Data
LDL R in HepG2 Human Cell Line. LDL R was detected in immersion fixed HepG2 human hepatocellular carcinoma cell line using Goat Anti-Human LDL R Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2148) at 1.7 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
LDL R in Human Liver. LDL R was detected in formalin fixed paraffin-embedded sections of human liver using Goat Anti-Human LDL R Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2148) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Detection of Human LDLR by Knockdown Validated APLP2 and LDLR interactions with PCSK9 and their regulation of PCSK9 function.(A and B) Western blot showing APLP2, PCSK9, or Transferrin receptor (TFNR) levels in input fraction (I), IC or J16 immunoprecipitated samples (IP Ab.) in the absence or presence of 5F6 Fab or 12E3 Fab, as indicated. (B) Quantification of (A); shown as average APLP2 normalized to PCSK9 of 3 independent experiments with SEM. (C and D) J16 coIPs of PCSK9 from Neg or LDLR siRNA treated HepG2 cells with IC control, as indicated. (D) Quantification of (C); shown as average APLP2 normalized to PCSK9 from 3 independent experiments with SEM. (E, F, and G) Western blot of LDLR, APOER2, or TFNR in siRNA treated cells following treatment with PCSK9 at 0, 20, 50, or 100 μg/ml. (F) LDLR levels from (E) quantified as percent LDLR degradation of untreated cells and normalized to Neg siRNA samples. Shown as average with SEM from 4 independent experiments. (G) Same as F, but measuring APOER2 levels. Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/25905719), licensed under a CC-BY license. Not internally tested by R&D Systems.
Detection of Human LDLR by Knockdown Validated APLP2 and LDLR interactions with PCSK9 and their regulation of PCSK9 function.(A and B) Western blot showing APLP2, PCSK9, or Transferrin receptor (TFNR) levels in input fraction (I), IC or J16 immunoprecipitated samples (IP Ab.) in the absence or presence of 5F6 Fab or 12E3 Fab, as indicated. (B) Quantification of (A); shown as average APLP2 normalized to PCSK9 of 3 independent experiments with SEM. (C and D) J16 coIPs of PCSK9 from Neg or LDLR siRNA treated HepG2 cells with IC control, as indicated. (D) Quantification of (C); shown as average APLP2 normalized to PCSK9 from 3 independent experiments with SEM. (E, F, and G) Western blot of LDLR, APOER2, or TFNR in siRNA treated cells following treatment with PCSK9 at 0, 20, 50, or 100 μg/ml. (F) LDLR levels from (E) quantified as percent LDLR degradation of untreated cells and normalized to Neg siRNA samples. Shown as average with SEM from 4 independent experiments. (G) Same as F, but measuring APOER2 levels. Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/25905719), licensed under a CC-BY license. Not internally tested by R&D Systems.
Reconstitution Calculator
Preparation and Storage
- 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.
Background: LDLR
The low density lipoprotein receptor (LDL R) is the founding member of the LDL R family of scavenger receptors. This family contains transmembrane molecules that are characterized by the presence of EGF repeats, complement-like repeats, and YWTD motifs that form beta -propellers. Although members of the family were originally thought to be endocytic receptors, it is now clear that some members interact with adjacent cell‑surface molecules, expanding their range of activities. Human LDL R is synthesized as an 860 amino acid (aa) precursor that contains a 21 aa signal sequence, a 767 aa extracellular region, a 22 aa transmembrane segment and a 50 aa cytoplasmic tail. The extracellular region is complex. It consists of seven N-terminal complement-like cysteine-rich repeats that bind ligand. Cysteine residues in this region participate in intrachain disulfide bonds. This region is followed by three EGF-like repeats with a beta -propeller YWTD containing motif. The EGF-like repeats are responsible for ligand bonding and dissociation. Finally, there is a 50 aa membrane proximal Ser/Thr‑rich region that serves as a carbohydrate attachment point. There is extensive O‑linked and modest N-linked glycosylation. Thus the receptor’s predicted molecular weight of 93 kDa is increased to a native molecular weight of 120 ‑ 160 kDa. Within the 50 aa cytoplasmic tail, there is an NPXY motif that links the receptor to clathrin pits. The extracellular region of human LDL R is 51% aa identical to the extracellular region of human VLDL R, and 79% aa identical to the extracellular region of mouse LDL R. LDL R is constitutively expressed and binds apoB of LDL and apoE of VLDL. It is responsible for clearing 70% of plasma LDL in liver. Mutations in the LDL R gene cause the autosomal dominant disorder, familial hypercholesterolemia.
Product Datasheets
Citations for Human LDLR Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
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Citations: Showing 1 - 10
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A virus-like particle-based bivalent PCSK9 vaccine lowers LDL-cholesterol levels in non-human primates
Authors: Alexandra Fowler, Koen K. A. Van Rompay, Maureen Sampson, Javier Leo, Jennifer K. Watanabe, Jodie L. Usachenko et al.
NPJ Vaccines
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Proteolysis of the low density lipoprotein receptor by bone morphogenetic protein-1 regulates cellular cholesterol uptake
Authors: Sreemoti Banerjee, Robert J. Andrew, Christopher J. Duff, Kate Fisher, Carolyn D. Jackson, Catherine B. Lawrence et al.
Scientific Reports
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LDL receptor-peptide conjugate as in vivo tool for specific targeting of pancreatic ductal adenocarcinoma
Authors: Angélina Acier, Magali Godard, Fanny Gassiot, Pascal Finetti, Marion Rubis, Jonathan Nowak et al.
Communications Biology
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Combined Effects of Rosuvastatin and Exercise on Gene Expression of Key Molecules Involved in Cholesterol Metabolism in Ovariectomized Rats
Authors: Emilienne Tudor Ngo Sock, Gaétan Mayer, Jean-Marc Lavoie
PLOS ONE
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Trafficking Dynamics of PCSK9-Induced LDLR Degradation: Focus on Human PCSK9 Mutations and C-Terminal Domain
Authors: Steve Poirier, Hocine Ait Hamouda, Louis Villeneuve, Annie Demers, Gaétan Mayer
PLOS ONE
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Production and characterization of high-titer serum-free cell culture grown hepatitis C virus particles of genotype 1–6
Authors: Christian K. Mathiesen, Tanja B. Jensen, Jannick Prentoe, Henrik Krarup, Alfredo Nicosia, Mansun Law et al.
Virology
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Lipoproteins act as vehicles for lipid antigen delivery and activation of invariant natural killer T cells
Authors: Suzanne E. Engelen, Francesca A. Ververs, Angela Markovska, B. Christoffer Lagerholm, Jordan M. Kraaijenhof, Laura I.E. Yousif et al.
JCI Insight
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Altered cell function and increased replication of rhinoviruses and EV-D68 in airway epithelia of asthma patients
Authors: Manel Essaidi-Laziosi, Léna Royston, Bernadett Boda, Francisco Javier Pérez-Rodriguez, Isabelle Piuz, Nicolas Hulo et al.
Frontiers in Microbiology
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The low-density lipoprotein receptor and apolipoprotein E associated with CCHFV particles mediate CCHFV entry into cells
Authors: Ritter, M;Canus, L;Gautam, A;Vallet, T;Zhong, L;Lalande, A;Boson, B;Gandhi, A;Bodoirat, S;Burlaud-Gaillard, J;Freitas, N;Roingeard, P;Barr, JN;Lotteau, V;Legros, V;Mathieu, C;Cosset, FL;Denolly, S;
Nature communications
Species: Human, Primate - Cercopithecus aethiops (African Green Monkey)
Sample Types: Cell Lysates, Whole Cells
Applications: Flow Cytometry, Western Blot, Neutralization, Immunocytochemistry -
Insights into PCSK9-LDLR Regulation and Trafficking via the Differential Functions of MHC-I Proteins HFE and HLA-C
Authors: Mikaeeli, S;Ben Djoudi Ouadda, A;Evagelidis, A;Essalmani, R;Ramos, OHP;Fruchart-Gaillard, C;Seidah, NG;
Cells
Species: Human
Sample Types: Cell Lysates, Whole Cells
Applications: Western Blot, Immunocytochemistry -
A high-cholesterol diet promotes the intravasation of breast tumor cells through an LDL-LDLR axis
Authors: Magalhães, A;Cesário, V;Coutinho, D;Matias, I;Domingues, G;Pinheiro, C;Serafim, T;Dias, S;
Scientific reports
Species: Human, Mouse
Sample Types: Whole Cells
Applications: Functional Assay -
iPSC-Derived Endothelial Cells Reveal LDLR Dysfunction and Dysregulated Gene Expression Profiles in Familial Hypercholesterolemia
Authors: Zakharova, IS;Shevchenko, AI;Arssan, MA;Sleptcov, AA;Nazarenko, MS;Zarubin, AA;Zheltysheva, NV;Shevchenko, VA;Tmoyan, NA;Saaya, SB;Ezhov, MV;Kukharchuk, VV;Parfyonova, YV;Zakian, SM;
International journal of molecular sciences
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Identification of PCPE-2 as the endogenous specific inhibitor of human BMP-1/tolloid-like proteinases
Authors: Vadon-Le Goff, S;Tessier, A;Napoli, M;Dieryckx, C;Bauer, J;Dussoyer, M;Lagoutte, P;Peyronnel, C;Essayan, L;Kleiser, S;Tueni, N;Bettler, E;Mariano, N;Errazuriz-Cerda, E;Fruchart Gaillard, C;Ruggiero, F;Becker-Pauly, C;Allain, JM;Bruckner-Tuderman, L;Nyström, A;Moali, C;
Nature communications
Species: Mouse, Human
Sample Types: Protein
Applications: Western Blot -
A Virus-like particle-based bivalent PCSK9 vaccine lowers LDL-cholesterol levels in Non-Human Primates
Authors: Fowler, A;Van Rompay, KKA;Sampson, M;Leo, J;Watanabe, JK;Usachenko, JL;Immareddy, R;Lovato, DM;Schiller, JT;Remaley, AT;Chackerian, B;
bioRxiv : the preprint server for biology
Species: Primate - Macaca fascicularis (Cynomolgus Macaque)
Sample Types: Tissue Homogenates
Applications: Western Blot -
Targeting UGCG overcomes resistance to lysosomal autophagy inhibition
Authors: V Jain, SL Harper, AM Versace, D Fingerman, GS Brown, M Bhardwaj, MAS Crissey, AR Goldman, G Ruthel, Q Liu, A Zivkovic, H Stark, M Herlyn, PA Gimotty, DW Speicher, RK Amaravadi
Cancer Discovery, 2023-02-06;0(0):.
Species: Human
Sample Types: Cell Lysates, Whole Cells
Applications: Neutralization, Western Blot -
Role of PAI-1 in hepatic steatosis and dyslipidemia
Authors: JA Levine, C Oleaga, M Eren, AP Amaral, M Shang, E Lux, SS Khan, SJ Shah, Y Omura, N Pamir, J Hay, G Barish, T Miyata, H Tavori, S Fazio, DE Vaughan
Scientific Reports, 2021-01-11;11(1):430.
Species: Human
Sample Types: Whole Cells
Applications: ICC -
SR-B1 drives endothelial cell LDL transcytosis via DOCK4 to promote atherosclerosis
Authors: L Huang, KL Chambliss, X Gao, IS Yuhanna, E Behling-Ke, S Bergaya, M Ahmed, P Michaely, K Luby-Phelp, A Darehshour, L Xu, EA Fisher, WP Ge, C Mineo, PW Shaul
Nature, 2019-04-24;0(0):.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
HIV-induced neuroinflammation: impact of PAR1 and PAR2 processing by Furin
Authors: V Sachan, R Lodge, K Mihara, J Hamelin, C Power, BB Gelman, MD Hollenberg, ÉA Cohen, NG Seidah
Cell Death Differ., 2019-01-25;0(0):.
Species: Human
Sample Types: Whole Cells
Applications: ICC -
The ER membrane protein complex promotes biogenesis of sterol-related enzymes maintaining cholesterol homeostasis
Authors: N Volkmar, ML Thezenas, SM Louie, S Juszkiewic, DK Nomura, RS Hegde, BM Kessler, JC Christians
J. Cell. Sci., 2019-01-16;132(2):.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Low-density lipoprotein (LDL)-dependent uptake of Gram-positive lipoteichoic acid and Gram-negative lipopolysaccharide occurs through LDL receptor
Authors: PM Grin, DJ Dwivedi, KM Chathely, BL Trigatti, A Prat, NG Seidah, PC Liaw, AE Fox-Robich
Sci Rep, 2018-07-12;8(1):10496.
Species: Human
Sample Types: Whole Cells
Applications: Functional Assay -
6-Gingerol Regulates Hepatic Cholesterol Metabolism by Up-regulation of LDLR and Cholesterol Efflux-Related Genes in HepG2 Cells
Authors: X Li, J Guo, N Liang, X Jiang, Y Song, S Ou, Y Hu, R Jiao, W Bai
Front Pharmacol, 2018-02-27;9(0):159.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Antisense oligonucleotides targeting translation inhibitory elements in 5' UTRs can selectively increase protein levels
Authors: XH Liang, H Sun, W Shen, S Wang, J Yao, MT Migawa, HH Bui, SS Damle, S Riney, MJ Graham, RM Crooke, ST Crooke
Nucleic Acids Res., 2017-09-19;45(16):9528-9546.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Ruxolitinib and polycation combination treatment overcomes multiple mechanisms of resistance of pancreatic cancer cells to oncolytic vesicular stomatitis virus
Authors: SA Felt, GN Droby, VZ Grdzelishv
J. Virol., 2017-07-27;0(0):.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Applying antibody-sensitive hypervariable region 1-deleted hepatitis C virus to the study of escape pathways of neutralizing human monoclonal antibody AR5A
Authors: R Velázquez-, M Law, J Bukh, J Prentoe
PLoS Pathog, 2017-02-23;13(2):e1006214.
Species: Human
Sample Types: Whole Cells
Applications: Neutralization -
A novel mechanism causing familial hypercholesterolemia: The proprotein convertase subtilisin/kexin type 9-resistant Arg410Ser LDL receptor mutation
Authors: Delia Susan-Resi
J. Biol. Chem, 2016-12-20;0(0):.
Species: Human
Sample Types: Cell Lysates, Whole Cells
Applications: ICC, Western Blot -
Identification of a Chrysanthemic Ester as an Apolipoprotein E Inducer in Astrocytes
PLoS ONE, 2016-09-06;11(9):e0162384.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Proprotein convertase subtilisin/Kexin type 9 (PCSK9) single domain antibodies are potent inhibitors of LDL receptor degradation
Authors: Elodie Weider
J Biol Chem, 2016-06-08;0(0):.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Alirocumab, a Therapeutic Human Antibody to PCSK9, Does Not Affect CD81 Levels or Hepatitis C Virus Entry and Replication into Hepatocytes
PLoS ONE, 2016-04-26;11(4):e0154498.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Plasma Membrane Tetraspanin CD81 Complexes with Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9) and Low Density Lipoprotein Receptor (LDLR), and Its Levels Are Reduced by PCSK9.
Authors: Le Q, Blanchet M, Seidah N, Labonte P
J Biol Chem, 2015-07-20;290(38):23385-400.
Species: Human
Sample Types: Cell Lysates, Whole Cells
Applications: IHC, Immunoprecipitation -
Common Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9) Epitopes Mediate Multiple Routes for Internalization and Function.
Authors: DeVay R, Yamamoto L, Shelton D, Liang H
PLoS ONE, 2015-04-23;10(4):e0125127.
Species: Human, Mouse
Sample Types: Cell Lysates, Whole Tissue
Applications: IHC, Western Blot -
Differential complement activation pathways promote C3b deposition on native and acetylated LDL thereby inducing lipoprotein binding to the complement receptor 1.
Authors: Klop B, van der Pol P, van Bruggen R, Wang Y, de Vries M, van Santen S, O'Flynn J, van de Geijn G, Njo T, Janssen H, de Man P, Jukema J, Rabelink T, Rensen P, van Kooten C, Cabezas M
J Biol Chem, 2014-10-27;289(51):35421-30.
Species: Hamster, Human
Sample Types: Whole Cells
Applications: Blocking, Flow Cytometry -
Hormonal modulators of glial ABCA1 and apoE levels.
Authors: Fan, Jianjia, Shimizu, Yoko, Chan, Jeniffer, Wilkinson, Anna, Ito, Ayaka, Tontonoz, Peter, Dullaghan, Edie, Galea, Liisa A, Pfeifer, Tom, Wellington, Cheryl L
J Lipid Res, 2013-09-02;54(11):3139-50.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Characterization of proprotein convertase subtilisin/kexin type 9 (PCSK9) trafficking reveals a novel lysosomal targeting mechanism via amyloid precursor-like protein 2 (APLP2).
Authors: DeVay, Rachel M, Shelton, David L, Liang, Hong
J Biol Chem, 2013-02-19;288(15):10805-18.
Species: Human
Sample Types: Cell Lysates, Whole Cells
Applications: ICC, Western Blot -
The proprotein convertase PC7: unique zymogen activation and trafficking pathways.
Authors: Rousselet E, Benjannet S, Hamelin J, Canuel M, Seidah NG
J. Biol. Chem., 2010-11-12;286(4):2728-38.
Species: Human
Sample Types: Cell Lysates, Whole Cells
Applications: ICC, Western Blot -
Dissection of the endogenous cellular pathways of PCSK9-induced low density lipoprotein receptor degradation: evidence for an intracellular route.
Authors: Poirier S, Mayer G, Poupon V, McPherson PS, Desjardins R, Ly K, Asselin MC, Day R, Duclos FJ, Witmer M, Parker R, Prat A, Seidah NG
J. Biol. Chem., 2009-07-27;284(42):28856-64.
Species: Human
Sample Types: Whole Cells
Applications: ICC -
Author Correction: Proteolysis of the low density lipoprotein receptor by bone morphogenetic protein-1 regulates cellular cholesterol uptake
Authors: S Banerjee, RJ Andrew, CJ Duff, K Fisher, CD Jackson, CB Lawrence, N Maeda, DS Greenspan, KAB Kellett, NM Hooper
Sci Rep, 2020-02-11;10(1):2681.
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Hypervariable Region 1 Deletion and Required Adaptive Envelope Mutations Confer Decreased Dependency on Scavenger Receptor Class B Type I and Low-Density Lipoprotein Receptor for Hepatitis C Virus
Authors: Jannick Prentoe, Stéphanie B. N. Serre, Santseharay Ramirez, Alfredo Nicosia, Judith M. Gottwein, Jens Bukh
Journal of Virology
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BLOS1 mediates kinesin switch during endosomal recycling of LDL receptor
Authors: Chang Zhang, Chanjuan Hao, Guanghou Shui, Wei Li
eLife
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Downregulation of low-density lipoprotein receptor mRNA in lymphatic endothelial cells impairs lymphatic function through changes in intracellular lipids
Authors: Laurent Vachon, Ali Smaani, Nolwenn Tessier, Gabriel Jean, Annie Demers, Andreea Milasan et al.
Theranostics
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Blocking of LDL receptor in HEK293 cells by the Human LDLR Antibody (AF2148). HEK cells were incubated with Phrodo Red LDL at 10 μg/ml in the presence of 10 μg/ml of the blocking human LDLR antibody (AF2148).