{"product_id":"anti-gpr81-hcar1-antibody-bha21300540","title":"Anti-GPR81\/HCAR1 Antibody","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eAnti-GPR81\/HCAR1 Antibody is an antibody targeting Hydroxycarboxylic acid receptor 1, HCA1 Receptor, G-protein coupled receptor 81, GPR81, G Protein-Coupled Receptor 104, LACR1 Polyclonal raised in Rabbit (Unconjugated). This antibody is commonly used in IHC, WB to detect, localize, or compare expression of the target across samples.\u003c\/p\u003e  \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e Hydroxycarboxylic acid receptor 1, HCA1 Receptor, G-protein coupled receptor 81, GPR81, G Protein-Coupled Receptor 104, LACR1 (also reported as Hydroxycarboxylic acid receptor 1, HCA1 Receptor, G-protein coupled receptor 81, GPR81, G Protein-Coupled Receptor 104, LACR1).\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eImmunogen\/epitope region:\u003c\/strong\u003e Intracellular, C-terminus.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHomology note:\u003c\/strong\u003e Rat - 9\/14 amino acid residues identical (informative for cross-species interpretation).\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSpecies reactivity (as provided):\u003c\/strong\u003e Rat, Mouse.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eSpecificity statement (as provided):\u003c\/strong\u003e The antibody will not recognize human GPR81 (HCAR1)..\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eLot quality control (as provided):\u003c\/strong\u003e Western blot analysis.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003ePeptide confirmation:\u003c\/strong\u003e Confirmed by amino acid analysis and mass spectrometry.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBlocking peptide:\u003c\/strong\u003e Available for antigen preadsorption control where appropriate.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThese attributes help researchers interpret whether signal reflects the intended target in a given assay and sample context.\u003c\/p\u003e  \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003eGPR81 is an orphan G-protein-coupled receptor that belongs to a family of hydroxy-carboxylic acid (HCA) receptors. Its endogenous ligand is L-lactate, a metabolite produced when glycolysis exceeds the capacity to oxidize pyruvate1,2.In addition to being a by-product of metabolism, lactate plays a role in insulin signaling, particularly in insulin mediated anti-lipolytic effects. Likewise, GPR81 is mostly expressed in adipose tissues and its activation results in inhibition of lipolysis and reduced hydrolysis of triglycerides to glycerol and fatty acids, suggesting that GPR81 may be an attractive drug discovery target for metabolic disorders4.Beyond the control of adipocyte lipolysis, GPR81 is also involved in neuronal signaling, regulation of blood flow to the retina.\u003c\/p\u003e  \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e   \u003cli\u003eComparing target expression across perturbations, genotypes, or treatment conditions.\u003c\/li\u003e   \u003cli\u003eInterpreting localization shifts alongside pathway or phenotypic readouts.\u003c\/li\u003e   \u003cli\u003eUsing orthogonal controls (KO\/KD, peptide competition, isotype concepts) to support conclusions.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch2\u003eCommon research applications\u003c\/h2\u003e \u003cul\u003e   \u003cli\u003eWestern blot (WB): compare target abundance\/size across lysates and conditions; consider isoforms\/PTMs.\u003c\/li\u003e   \u003cli\u003eImmunohistochemistry (IHC): examine spatial distribution in tissue and relate signal to cell-type composition.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eInterpretation typically benefits from comparing matched sample sets (e.g., treated vs control, WT vs KO\/KD) and using orthogonal readouts where feasible.\u003c\/p\u003e  \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e \u003cul\u003e   \u003cli\u003eIsoforms and post-translational modifications can shift apparent molecular weight or epitope accessibility across samples.\u003c\/li\u003e   \u003cli\u003eCross-species signal may depend on epitope conservation; consult the provided homology note when selecting models.\u003c\/li\u003e   \u003cli\u003ePermeabilization, fixation, and antigen retrieval can change accessibility of intracellular vs extracellular epitopes.\u003c\/li\u003e   \u003cli\u003eConceptual control: antigen preadsorption (blocking peptide) can help assess signal dependence on the immunogen region.\u003c\/li\u003e   \u003cli\u003eProvided control suggestions: Negative control: BLP-HR011.\u003c\/li\u003e   \u003cli\u003eApplication notes: see product-specific dilution\/usage notes and control concepts provided in the dataset.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eApplication abbreviations:\u003c\/strong\u003e CBE- Cell-based ELISA, FC- Flow cytometry, ICC- Immunocytochemistry, IE- Indirect ELISA, IF- Immunofluorescence, IFC- Indirect flow cytometry, IHC- Immunohistochemistry, IP- Immunoprecipitation, LCI- Live cell imaging, N- Neutralization, WB- Western blot. \u003cstrong\u003eSpecies abbreviations:\u003c\/strong\u003e H- Human, M- Mouse, R- Rat.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eRecommended controls:\u003c\/strong\u003e Blocking peptide: BLP-HR011; Negative control: BLP-HR011.\u003c\/p\u003e \u003c!-- Sources (internal): - Alomone Labs product page scientific background (as provided in this catalog row) - UniProt Knowledgebase (target-level reference) - NCBI Gene (target-level reference) - General antibody validation principles (KO\/KD, peptide competition, isotype control concepts) --\u003e","brand":"Alomone Labs","offers":[{"title":"0.2 ml (Carrier Free) \/ 1","offer_id":53064833040749,"sku":"AHR-011-CF-0P2ML-1","price":994.0,"currency_code":"USD","in_stock":true},{"title":"0.2 ml \/ 1","offer_id":53064909619565,"sku":"AHR-011-0P2ML-1","price":795.0,"currency_code":"USD","in_stock":true},{"title":"25 mcl \/ 1","offer_id":53064909652333,"sku":"AHR-011-25MCL-1","price":597.0,"currency_code":"USD","in_stock":true},{"title":"50 mcl \/ 1","offer_id":53064909685101,"sku":"AHR-011-50MCL-1","price":697.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/AHR-011-ept.png?v=1772460993","url":"https:\/\/www.ebiohippo.com\/products\/anti-gpr81-hcar1-antibody-bha21300540","provider":"BioHippo","version":"1.0","type":"link"}