Anti-eIF2A Antibody, clone 2C18 ZooMAb® Rabbit Monoclonal
SIGMA/ZRB1558 - recombinant, expressed in HEK 293 cells
Synonym: Eukaryotic translation initiation factor 2A;65 kDa eukaryotic translation initiation factor 2A;eIF-2A
Product Type: Chemical
Immunohistochemistry (Paraffin) Enhanced Validation - Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human pancreas (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. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal. Reactivity was detected using a Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous staining was observed in acinar cells of human pancreas tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation - Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human pancreas (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. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal. Reactivity was detected using a Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous staining was observed in acinar cells of human pancreas tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation - Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human pancreas (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. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal. Reactivity was detected using a Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous staining was observed in acinar cells of human pancreas tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation - Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human pancreas (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. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal. Reactivity was detected using a Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous staining was observed in acinar cells of human pancreas tissue sections.
Immunohistochemistry (Paraffin) Enhanced Validation - Recombinant Antibody Technology Formalin Fixed Paraffin Embedded (FFPE) human pancreas (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. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal. Reactivity was detected using a Goat Anti-Rabbit IgG and HRP-DAB. Cytoplasmic/membranous staining was observed in acinar cells of human pancreas tissue sections.
Immunocytochemistry Enhanced Validation - Recombinant Antibody Technology Immunofluorescent analysis of U2OS cells was performed using a 1:1,000 dilution of Cat. No. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488 (Green). Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the cytosol.
Immunocytochemistry Enhanced Validation - Recombinant Antibody Technology Immunofluorescent analysis of U2OS cells was performed using a 1:1,000 dilution of Cat. No. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488 (Green). Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the cytosol.
Immunocytochemistry Enhanced Validation - Recombinant Antibody Technology Immunofluorescent analysis of U2OS cells was performed using a 1:1,000 dilution of Cat. No. ZRB1558, Anti-eIF2A, clone 2C18 ZooMAb® Rabbit Monoclonal and visualized with a Goat Anti-Rabbit secondary antibody conjugated to Alexa Fluor® 488 (Green). Actin filaments have been labeled with phalloidin (Red). Nucleus is stained with DAPI (Blue). This antibody positively stains the cytosol.
Western Blotting Enhanced Validation - Recombinant Antibody Technology Lysates from Mouse Pancreas tissue (Lane 1) and PC12 cells (Lane 2) were probed with Cat. No. ZRB1558, Anti-eIF2A, clone 2C18 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 eIF2A (~60 kDa).
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 | 2C18, recombinant monoclonal |
| conjugate | unconjugated |
| description | recombinant, expressed in HEK 293 cells |
| enhanced validation | recombinant expression Learn more about Antibody Enhanced Validation  |
| epitope sequence | C-terminal half |
| 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 64.99 kDa |
| observed mol wt ~60 kDa | |
| packaging | antibody small pack of 25 μL |
| product line | ZooMAb® learn more |
| Protein ID accession no. | NP_114414  |
| purified by | using Protein A |
| Quality Level | 200 |
| recombinant | expressed in HEK 293 cells |
| shipped in | ambient |
| species reactivity | human, mouse, rat |
| species reactivity (predicted by homology) | monkey, canine |
| storage temp. | 2-8°C |
| technique(s) | immunocytochemistry: suitable |
| immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable | |
| western blot: suitable | |
| UniProt accession no. | Q9BY44 |
| Application: | Quality Control Testing Evaluated by Western Blotting in PC12 cell lysate. Western Blotting Analysis: A 1:10,000 dilution of this antibody detected eIF2A in PC12 cell lysate. Tested applications Western Blotting Analysis: A 1:10,000 dilution from a representative lot detected eIF2A in mouse pancreas tissue lysate. Immunohistochemistry (Paraffin) Analysis: A 1:100 dilution from a representative lot detected eIF2A in human pancreas tissue sections. Immunocytochemistry Analysis: A 1:1,000 dilution from a representative lot detected eIF2A in U2OS cells.. 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. |
| Immunogen: | KLH-conjugated linear peptide corresponding to 23 amino acids from the C-terminal half of human Eukaryotic translation initiation factor 2A (eIF-2A). |
| Legal Information: | ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Physical form: | Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS, 5% Trehalose, normal appearance a coarse or translucent resin. The PBS/trehalose components in the ZooMAb formulation can have the appearance of a semi-solid (bead like gel) after lyophilization. This is a normal phenomenon. Please follow the recommended reconstitution procedure in the data sheet to dissolve the semi-solid, bead-like, gel-appearing material. The resulting antibody solution is completely stable and functional as proven by full functional testing. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 μL. |
| Reconstitution: | 300 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 2C18 is a Rabbit recombinant monoclonal antibody that specifically detects Eukaryotic translation initiation factor 2A (eIF-2A). It targets an epitope within 23 amino acids from the C-terminal half. |
| 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: | Eukaryotic translation initiation factor 2A (UniProt: Q9BY44; also known as eIF-2A, 65 kDa eukaryotic translation initiation factor 2A) is encoded by the EIF2A (also known as CDA02, MSTP004, MSTP089) gene (Gene ID: 83939) in human. eIF-2A is a widely expressed protein with higher levels observed in pancreas, heart, brain, and placenta. It functions in the early steps of protein synthesis by directing the binding of methionyl-tRNAi to 40S ribosomal subunits. It is reported to catalyze the formation of puromycin-sensitive 80 S preinitiation complexes and the poly(U)-directed synthesis of polyphenylalanine at low magnesium levels. It has seven WD repeats. Although both eIF2 and eIF-2A function in the methionyl-puromycin assays, the order of events differs between the two. In contrast to the eIF-2 complex, it binds methionyl-tRNAi to 40S subunits in a codon-dependent manner, whereas the eIF-2 complex binds methionyl-tRNAi to 40S subunits in a GTP-dependent manner. Note: The gene EIF2A should not be confused with EIF2S1 (Gene ID: 1965) that is frequently referred to as eIF2-alpha in the literature. EIF2S1 is the alpha subunit of the eIF2 translation initiator complex. This ZooMAb® recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals. (Ref.: Zoll, WL., et al. (2002). J. Biol. Chem. 277(40); 37079-37087). |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Storage Temp. | 2-8°C |