{"product_id":"anti-cd157-bst1-extracellular-antibody-bha21300854","title":"Anti-CD157\/BST1 (extracellular) Antibody","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eAnti-CD157\/BST1 (extracellular) Antibody is an antibody targeting Bone Marrow Stromal Antigen 1, BST-1, ADP-Ribosyl Cyclase 2, Cyclic ADP-ribose hydrolase 2, CADPr Hydrolase 2, CADPR2, LY-65 Polyclonal raised in Rabbit (Unconjugated). This antibody is commonly used in IFC, IHC, LCI, 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 Bone Marrow Stromal Antigen 1, BST-1, ADP-Ribosyl Cyclase 2, Cyclic ADP-ribose hydrolase 2, CADPr Hydrolase 2, CADPR2, LY-65 (also reported as Bone Marrow Stromal Antigen 1, BST-1, ADP-Ribosyl Cyclase 2, Cyclic ADP-ribose hydrolase 2, CADPr Hydrolase 2, CADPR2, LY-65).\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eImmunogen\/epitope region:\u003c\/strong\u003e Extracellular, N-terminus..\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHomology note:\u003c\/strong\u003e Mouse, Rat - 15 out of 16 amino acid residues identical Not recommended for BST1 from human samples (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\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   \u003cli\u003e\n\u003cstrong\u003eConjugate\/format:\u003c\/strong\u003e Unconjugated (may affect detection channel and background).\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\u003eCD157, also known as bone marrow stromal cell antigen 1 (BST1), is a glycosylphosphatidylinositol (GPI)-anchored glycoprotein with a dual function as a receptor and a β-NAD+-metabolizing ectoenzyme of the ADP-ribosyl cyclases gene family1.CD157 and its paralog CD38, catalyze the formation of cyclic ADP-ribose (cADPR) from NAD, a second messenger involved in intracellular calcium mobilization through ryanodine receptors, among other functions 1,2.As a receptor, CD157 interacts with β1 and β2 integrins (CD29 and CD18 respectively) to form a multimolecular complex that mediates intracellular signaling through the FAK\/Src pathway 1-3. Known ligands for CD157 include extracellular matrix components like fibronectin, fibrinogen, laminin-1 and type 1 collagen 2,3.As it name suggests, CD157 was first identified in bone marrow-derived cells, but it is also expressed in other immune system cells like neutrophils, T-cells, pre B-cells and macrophages. CD157 has been demonstrated to be involved in both the innate and adaptive immune response with roles in B- and T-cell growth and the control of myeloid cells migration during inflammation 1.CD157 is considered a marker and therapeutic target for several hematological malignancies like acute myeloid leukemia (AML) as well as several solid tumors like ovarian and malignant mesothelioma 3,4,5.Outside the immune system, CD157 is expressed in vascular endothelium, intestine and brain among others.\u003c\/p\u003e  \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e   \u003cli\u003eProfiling immune-marker expression across cell subsets with single-cell or flow-based readouts.\u003c\/li\u003e   \u003cli\u003eConnecting receptor\/ligand levels to activation state and cytokine programs.\u003c\/li\u003e   \u003cli\u003eApplying genetic perturbation or orthogonal assays to support specificity and interpretation.\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   \u003cli\u003eImmunofluorescence\/ICC: assess subcellular localization and co-localization with markers in cells or sections.\u003c\/li\u003e   \u003cli\u003eFlow cytometry (direct\/indirect): quantify target-positive populations and shifts in expression across subsets.\u003c\/li\u003e   \u003cli\u003eLive cell imaging (LCI): support extracellular-epitope detection on non-permeabilized cells when appropriate.\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-NT067.\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-NT067; Negative control: BLP-NT067.\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":53064843559277,"sku":"ANT-067-CF-0P2ML-1","price":994.0,"currency_code":"USD","in_stock":true},{"title":"0.2 ml \/ 1","offer_id":53064939307373,"sku":"ANT-067-0P2ML-1","price":795.0,"currency_code":"USD","in_stock":true},{"title":"25 mcl \/ 1","offer_id":53064939340141,"sku":"ANT-067-25MCL-1","price":597.0,"currency_code":"USD","in_stock":true},{"title":"50 mcl \/ 1","offer_id":53064939372909,"sku":"ANT-067-50MCL-1","price":697.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/ANT-067_ept.png?v=1772461036","url":"https:\/\/www.ebiohippo.com\/products\/anti-cd157-bst1-extracellular-antibody-bha21300854","provider":"BioHippo","version":"1.0","type":"link"}