{"product_id":"rab27b-antibody-ras-related-protein-rab-27b-bha17135544","title":"RAB27B Antibody \/ Ras-related protein Rab-27B","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eRAB27B Antibody \/ Ras-related protein Rab-27B is a anti-RAB27B Rabbit antibody Polyclonal (rabbit origin) supplied in Lyophilized format. Recommended for workflows such as Western blot (WB), Immunohistochemistry (IHC), Immunocytochemistry (ICC), Immunofluorescence (IF), Flow cytometry (FACS) with listed reactivity in Human, Mouse, Rat. Reported localization: Cytoplasm, Golgi, Plasma membrane.\u003c\/p\u003e\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e RAB27B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAntibody details:\u003c\/strong\u003e Rabbit, Polyclonal (rabbit origin), isotype Rabbit IgG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Lyophilized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications (as listed):\u003c\/strong\u003e WB, IHC, ICC\/IF, FACS\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cdiv\u003eRAB27B antibody detects Ras-related protein Rab-27B, a member of the Rab family of small GTPases that regulates vesicle docking, secretion, and exocytosis. RAB27B plays key roles in platelet dense granule release, melanosome transport, and hormone secretion. The RAB27B antibody is widely used in cell biology, endocrinology, and neurobiology to study regulated exocytosis and vesicle trafficking.\u003cbr\u003e\u003cbr\u003eRAB27B is encoded by the RAB27B gene located on human chromosome 18q21.32. The protein is approximately 221 amino acids long and cycles between active GTP-bound and inactive GDP-bound states. RAB27B localizes to secretory vesicles and interacts with effector proteins such as SYTL2, MLPH, and Slac2 family members, facilitating vesicle tethering to the plasma membrane before exocytosis.\u003cbr\u003e\u003cbr\u003eThe RAB27B antibody detects a 25 kilodalton protein by western blot and shows vesicular punctate staining under confocal microscopy. RAB27B functions in a wide range of cell types, including platelets, endocrine cells, and neurons, where it regulates secretion of serotonin, insulin, and neurotransmitters. In melanocytes, RAB27B cooperates with RAB27A to control melanosome transport and pigment distribution.\u003cbr\u003e\u003cbr\u003eDysregulation of RAB27B has been linked to cancer metastasis, neurodegenerative disease, and immune dysfunction. Overexpression enhances invasive potential in breast and colorectal cancers by promoting secretion of exosomes that modify the tumor microenvironment. Mutations or reduced function lead to granule secretion defects and pigmentation abnormalities.\u003cbr\u003e\u003cbr\u003eBecause RAB27B regulates exocytosis and vesicle transport, it serves as a model for understanding intracellular trafficking mechanisms and communication between cells.\u003c\/div\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConnecting protein-level changes to phenotype using orthogonal readouts (genetic perturbation, transcriptomics, imaging).\u003c\/li\u003e\n\u003cli\u003eConsidering isoforms and post-translational regulation when interpreting protein-level changes.\u003c\/li\u003e\n\u003cli\u003eComparing results across species and model systems with matched controls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWestern blotting:\u003c\/strong\u003e compare relative abundance and activation-state changes across conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunofluorescence:\u003c\/strong\u003e visualize subcellular distribution and cell-to-cell heterogeneity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunohistochemistry:\u003c\/strong\u003e map target signal in tissue context and compare regions\/phenotypes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow cytometry:\u003c\/strong\u003e quantify target-positive populations and signal shifts at single-cell resolution.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInterpret changes in signal alongside appropriate controls and, when relevant, in parallel with total-protein or pathway readouts.\u003c\/p\u003e\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSignal can reflect expression level, isoform composition, and post-translational state; interpret results in the context of your model system and stimuli.\u003c\/li\u003e\n\u003cli\u003eSpecies differences and sample matrices can influence epitope recognition; prioritize matched controls and orthogonal confirmation when feasible.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAntibody notes:\u003c\/strong\u003e Polyclonal antibodies recognize multiple epitopes, which can broaden the epitope footprint and may increase sensitivity in some contexts.\u003c\/p\u003e\u003c!-- Sources (internal): - UniProt search — UniProt — https:\/\/www.uniprot.org\/uniprotkb?query=RAB27B - NCBI Gene search — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=RAB27B - Ensembl search — Ensembl — https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=RAB27B - Human Protein Atlas search — HPA — https:\/\/www.proteinatlas.org\/search\/RAB27B - PubMed (review) — NLM — https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=RAB27B+review --\u003e","brand":"NSJ Bioreagents","offers":[{"title":"Adding 0.2 ml of distilled water will yield a concentration of 500 ug\/ml \/ 100 ug","offer_id":53047295967597,"sku":"FY12641","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/get_image_2929160b-2acc-4f8f-b593-7bb2ba782de5.jpg?v=1782237023","url":"https:\/\/www.ebiohippo.com\/products\/rab27b-antibody-ras-related-protein-rab-27b-bha17135544","provider":"BioHippo","version":"1.0","type":"link"}