Anti-Fibrillarin FBL Rabbit Monoclonal Antibody

Overview

This product is an anti-FBL antibody for target detection and characterization. Key identifiers include host species: Rabbit; Monoclonal; clone DIO-6; isotype Rabbit IgG; reactivity: Human,Mouse,Rat. Reported application contexts include WB, IHC, ICC, IF, IP, Flow (as provided in the source record). Boster Bio Anti-Fibrillarin FBL Rabbit Monoclonal Antibody catalog # M03178. Tested in WB, IHC, ICC/IF, IP, Flow Cytometry applications. This antibody reacts with Human, Mouse, Rat.

Key elements and design rationale

• Target: FBL (rRNA 2'-O-methyltransferase fibrillarin).
• Antibody format: Monoclonal; clone DIO-6; isotype Rabbit IgG.
• Host: Rabbit.
• Species reactivity: Human,Mouse,Rat (confirm in your model system with appropriate controls).

This description is intended to help interpret the antibody design and the biological context of the target using the fields provided in the catalog record, alongside general experimental considerations.

Biological background

FBL (protein: T-cell surface glycoprotein CD3 zeta chain) is a commonly studied target in molecular and cellular biology. Functional context (as provided): S-adenosyl-L-methionine-dependent methyltransferase that has the ability to methylate both RNAs and proteins. Involved in pre-rRNA processing by catalyzing the site-specific 2'-hydroxyl methylation of ribose moieties in pre-ribosomal RNA. Site specificity is provided by a guide RNA that base pairs with the substrate. Methylation occurs at a characteristic distance from the sequence involved in base pairing with the guide RNA. Also acts as a protein methyltransferase by mediating methylation of 'Gln-105' of histone H2A (H2AQ104me), a modification that impairs binding of the FACT complex and is specifically present at 35S ribosomal DNA locus (PubMed:24352239). . Reported cellular localization context: Nucleus, nucleolus . Fibrillar region of the nucleolus. Tissue expression notes (as provided): In fetal tissues, highly expressed in brain, detectable in lung and liver, but not in kidney. In adult tissues, expressed ubiquitously in the brain, detectable in the heart, liver, spleen, thymus, prostate, testis, ovary, small intestine and colon. The type A isoforms seem to be expressed predominantly in fetal brain whereas type B isoforms are expressed abundantly in both fetal and adult brain. .

Research relevance and current trends

• Research context keywords from the source record include: Actin Assembly,Actin, etc.,Cytoskeleton,Cytoskeleton/ECM,Extracellular Matrix,Microfilaments,Signal Transduction,Structures.
• Current studies often focus on connecting target abundance/localization to pathway perturbations across models, tissues, and cell states.
• Quantitative and multiplexed assays (e.g., imaging + immunoblot panels) are commonly used to compare phenotypes across conditions and time-courses.

Common research applications

• Western blotting (WB): assess relative target abundance across samples, treatments, or time-points.
• Immunohistochemistry (IHC): evaluate spatial distribution of target-positive staining in tissue architecture.
• Immunofluorescence/ICC (IF/ICC): visualize subcellular localization patterns and cell-to-cell heterogeneity.
• Flow cytometry: quantify target-positive populations and compare shifts in marker distributions.
• Immunoprecipitation (IP): enrich target complexes for downstream immunoblot or interaction analyses.

Workflow ideas (metafield): Validate FBL antibody specificity using KO/KD control samples (WB/IF/IHC as appropriate), Detect FBL expression by Western blot in cell or tissue lysates, Detect FBL in FFPE tissue sections by immunohistochemistry, Localize FBL by immunofluorescence/immunocytochemistry in cultured cells, Quantify FBL-positive cells by flow cytometry in single-cell suspensions, Enrich FBL by immunoprecipitation from lysates for downstream analysis

Notes for experimental interpretation

• Consider isoforms and post-translational modifications (PTMs) that may shift apparent molecular weight or epitope accessibility.
• Apparent molecular weight may vary by sample type and processing (observed MW: 70 kDa; calculated MW: 33784 MW).
• Control concepts: include appropriate negative controls (e.g., isotype, KO/KD samples) and orthogonal validation when feasible.

Additional product details (from the source record)

• Molecular weight (observed): 70 kDa
• Cellular localization (provided): Nucleus, nucleolus . Fibrillar region of the nucleolus.
• Tissue details (provided): In fetal tissues, highly expressed in brain, detectable in lung and liver, but not in kidney. In adult tissues, expressed ubiquitously in the brain, detectable in the heart, liver, spleen, thymus, prostate, testis, ovary, small intestine and colon. The type A isoforms seem to be expressed predominantly in fetal brain whereas type B isoforms are expressed abundantly in both fetal and adult brain. .

Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.