Anti-FTO Antibody, clone 4B21 ZooMAb® Rabbit Monoclonal
SIGMA/ZRB1052 - recombinant, expressed in HEK 293 cells
Synonym: Alpha-
Product Type: Chemical
Immunohistochemistry (Paraffin) Enhanced Validation-Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human kidney (A) and Negative control (no primary) (B) tissue sections were prepared using heat-induced epitope retrieval (HIER). Immunostaining was performed using a 1:100 dilution of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. Reactivity was detected using an Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous/nuclear staining was observed in subsets of tubules and glomeruli of human kidney tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation-Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human kidney (A) and Negative control (no primary) (B) tissue sections were prepared using heat-induced epitope retrieval (HIER). Immunostaining was performed using a 1:100 dilution of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. Reactivity was detected using an Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous/nuclear staining was observed in subsets of tubules and glomeruli of human kidney tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation-Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human kidney (A) and Negative control (no primary) (B) tissue sections were prepared using heat-induced epitope retrieval (HIER). Immunostaining was performed using a 1:100 dilution of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. Reactivity was detected using an Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous/nuclear staining was observed in subsets of tubules and glomeruli of human kidney tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation-Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human testis (A) and Negative control (no primary) (B) tissue sections were prepared using heat-induced epitope retrieval (HIER). Immunostaining was performed using a 1:100 dilution of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. Reactivity was detected using an Goat Anti-Rabbit IgG and HRP-DAB. Membranous/nuclear staining was primarily observed in Leydig cells, with lesser staining frequency and intensity in tubules of human testis tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation-Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human testis (A) and Negative control (no primary) (B) tissue sections were prepared using heat-induced epitope retrieval (HIER). Immunostaining was performed using a 1:100 dilution of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. Reactivity was detected using an Goat Anti-Rabbit IgG and HRP-DAB. Membranous/nuclear staining was primarily observed in Leydig cells, with lesser staining frequency and intensity in tubules of human testis tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation-Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human testis (A) and Negative control (no primary) (B) tissue sections were prepared using heat-induced epitope retrieval (HIER). Immunostaining was performed using a 1:100 dilution of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. Reactivity was detected using an Goat Anti-Rabbit IgG and HRP-DAB. Membranous/nuclear staining was primarily observed in Leydig cells, with lesser staining frequency and intensity in tubules of human testis tissue sections.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of HeLa cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of HeLa cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of HeLa cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of A431cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of A431cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of A431cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of HepG2 cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of HepG2 cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of HepG2 cells was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of NIH3T3 cell line was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of NIH3T3 cell line was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Immunocytochemistry Enhanced Validation-Recombinant Antibody Technology Immunofluorescent analysis of NIH3T3 cell line was performed using 1:100 of Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488. Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the nucleus.
Western Blotting Enhanced Validation-Recombinant Antibody Technology Lysates from HeLa (Lane 1), HepG2 (Lane 2), and COS-7 (Lane 3) cells were probed with Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal (1:10,000 dilution). Proteins were visualized using a Donkey Anti-Rabbit IgG secondary antibody conjugated to HRP and a chemiluminescence detection system. Arrow indicates FTO (~53 kDa).
Affinity Binding Assay Enhanced Validation-Recombinant Antibody Technology 100 μg/mL of non-specific control peptide (Run 1) or FTO peptide (Run 2) were analyzed by affinity binding assay using Cat. No. ZRB1052, Anti-FTO, clone 4B21 ZooMAb® Rabbit Monoclonal. The binding of this antibody to FTO peptide displayed a KD value of 4.1 x 10-8 whereas its binding to non-specific control peptide displayed a KD of 2.9 x 10-4.
12 Principles of Green Chemistry: Principle 1—Waste Prevention. This product has a smaller environmental footprint through reduction of waste in the manufacturing process.
12 Principles of Green Chemistry: Principle 4—Designing Safer Chemicals
Chemical products should be designed to affect their desired function while minimizing their toxicity.
Chemical products should be designed to affect their desired function while minimizing their toxicity.
12 Principles of Green Chemistry: Principle 6—Design for Energy Efficiency. This product was re-engineered to utilize less energy in the manufacturing process.
| antibody form | purified antibody |
| antibody product type | primary antibodies |
| biological source | rabbit |
| clone | 4B21, monoclonal |
| recombinant monoclonal | |
| conjugate | unconjugated |
| enhanced validation | recombinant expression Learn more about Antibody Enhanced Validation  |
| form | lyophilized |
| greener alternative category | Aligned |
| greener alternative product characteristics | Waste Prevention Designing Safer Chemicals Design for Energy Efficiency Learn more about the Principles of Green Chemistry . |
| isotype | IgG |
| mol wt | calculated mol wt 58.28 kDa |
| observed mol wt ~53 kDa | |
| packaging | antibody small pack of 25 μL |
| product line | ZooMAb® learn more |
| Quality Level | 200 |
| recombinant | expressed in HEK 293 cells |
| shipped in | ambient |
| species reactivity | mouse, monkey, human |
| storage temp. | 2-8°C |
| technique(s) | affinity binding assay: suitable |
| immunocytochemistry: suitable | |
| immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable | |
| western blot: suitable | |
| UniProt accession no. | Q9C0B1  |
| Application: | Anti-FTO, clone 4B21 ZooMAb, Cat. No. ZRB1052, is a recombinant Rabbit monoclonal antibody that specifically targets FTO and is tested in Affinity Binding Assay, Immunocytochemistry, Immunohistochemistry (Paraffin), and Western Blotting. |
| Application: | Western Blotting Analysis: A 1:10,000 dilution from a representative lot detected FTO in HepG2 and COS-7 cell lysates. Immunocytochemistry Analysis: 1:100 from a representative lot detected FTO in HeLa, A431, HepG2 and NIH 3T3 cells. Affinity Binding Assay: A representative lot of this antibody bound FTO peptide with a KD of 4.1 x 10-8 in an affinity binding assay. Immunohistochemistry (Paraffin) Analysis: A 1:100 dilution from a representative lot detected FTO in human testis and human kidney tissue sections. Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user |
| Disclaimer: | Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals. |
| General description: | We are committed to bringing you greener alternative products, which adhere to one or more of The 12 Principles of Green Chemistry.This antibody is Preservative-free, produced without the harm or sacrifice of animals and exceptionally stable to allow for ambient shipping and storage if needed and thus aligns with "Waste Prevention", "Designing Safer Chemicals" and "Design for Energy Efficiency". Click here for more information. |
| General description: | ZooMAb antibodies represent an entirely new generation of recombinant monoclonal antibodies. Each ZooMAb antibody is manufactured using our proprietary recombinant expression system, purified to homogeneity, and precisely dispensed to produce robust and highly reproducible lot-to-lot consistency. Only top-performing clones are released for use by researchers. Each antibody is validated for high specificity and affinity across multiple applications, including its most commonly used application. ZooMAb antibodies are reliably available and ready to ship when you need them. Learn more about ZooMAb here. |
| Immunogen: | KLH-conjugated linear peptide corresponding to 20 amino acids from the N-terminal region of human Fat mass and obesity-associated protein (FTO). |
| Legal Information: | ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Physical form: | Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS with 5% Trehalose, normal appearance a coarse or translucent resin. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 μL. |
| Reconstitution: | 30 μg/mL after reconstitution at 25 μL per vial. Please refer to guidance on suggested starting dilutions and/or titers per application and sample type. |
| Specificity: | Clone 4B21 is a ZooMAb rabbit recombinant monoclonal antibody that specifically detects Fat mass and obesity-associated protein (FTO). It targets and epitope within 20 amino acids from the N-terminal region. |
| Storage and Stability: | Recommend storage of lyophilized product at 2-8°C; Before reconstitution, micro-centrifuge vials briefly to spin down material to bottom of the vial; Reconstitute each vial by adding 25 μL of filtered lab grade water or PBS; Reconstituted antibodies can be stored at 2-8°C, or -20°C for long term storage. Avoid repeated freeze-thaws. |
| Target description: | Alpha-ketoglutarate-depen |
| WGK Germany | WGK 1 |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352203 |