ZRB2199

Anti-LIN28B Antibody, clone 1H17 ZooMAb^® Rabbit Monoclonal

recombinant, expressed in HEK 293 cells

• Synonym(s): Protein lin-28 homolog B
• NACRES: NA.46
• UNSPSC Code: 12352203
• Conjugate: unconjugated
• Clone: 1H17, recombinant monoclonal
• Application: FACS, ICC, IHC, WB
• Citations: -

Properties

• biological source: rabbit
• Quality Segment: 200
• recombinant: expressed in HEK 293 cells
• conjugate: unconjugated
• antibody form: purified antibody
• antibody product type: primary antibodies
• clone: 1H17, recombinant monoclonal
• description: recombinant, expressed in HEK 293 cells
• product line: ZooMAb^® learn more
• form: lyophilized
• mol wt: calculated mol wt 27.08 kDa, observed mol wt ~34 kDa
• purified by: using Protein A
• species reactivity: human
• species reactivity (predicted by homology): monkey
• packaging: antibody small pack of 25 μL
• enhanced validation: recombinant expression; Learn more about Antibody Enhanced Validation
• technique(s): flow cytometry: suitable, immunocytochemistry: suitable, immunohistochemistry: suitable, western blot: suitable
• isotype: IgG
• epitope sequence: C-terminal half
• Protein ID accession no.: NP_001004317
• UniProt accession no.: Q6ZN17
• greener alternative category: Aligned
• shipped in: ambient
• storage temp.: 2-8°C
• Gene Information: human ... LIN28B(389421)

Description

General description

Protein lin-28 homolog B (UniProt: Q6ZN17; also known as LIN-28B) is encoded by the LIN28B (also known as CSDD2) gene (Gene ID: 389421) in human. LIN28B is an evolutionarily conserved RNA-binding protein that regulates mRNA translation and miRNA let-7 maturation in embryonic stem cells and developing tissues. Two isoforms of LIN-28B have been described that are produced by alternative splicing. Isoform 1 is detected in placenta and in poorly differentiated hepatocellular carcinoma cells. Isoform 2 is detected in fetal liver, non-tumor liver tissues, as well as well-differentiated tumor tissues. LIN-28B is predominantly nucleolar and its nucleolar localization signal resides in amino acids 239-250.  It serves as a suppressor of microRNA (miRNA) biogenesis, including that of let-7 and possibly of miR107, miR-143 and miR-200c. It binds primary let-7 transcripts (pri-let-7), including pri-let-7g and pri-let-7a-1, and sequester them in the nucleolus, away from the microprocessor complex, hence preventing their processing into mature miRNA. In mammals, the LIN28B plays a critical role in multiple physiological processes, including skeletal myogenesis,  neurogliogenesis, lymphopoiesis, germ-cell development, and glucose metabolism. LIN-28B levels ae up-regulated in triple-negative (ER-,PR-,HER2-) breast tumors, as well as in liver, ovarian, and thyroid carcinomas. It is shown to inhibit apoptosis through regulation of the AKT2/FOXO3A/BIM axis in ovarian cancer cells. When overexpressed, isoform 1 is reported to stimulates growth of the breast adenocarcinoma cell line MCF-7, whereas isoform 2 does not affect cell growth. This ZooMAb^® recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals. (Ref.: Lin, X., et al. (2018). Signal Transduct. Target Ther. 3; Article 23; Piskounova, E., et al. (2011). Cell. 147(5); 1066-1079; Guo, Y., et al. (2006). Gene. 384; 51-61).

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.

This product aligns with 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.

Immunogen

KLH-conjugated linear peptide corresponding to 22 amino acids from the C-terminal half of human LIN28B.

Application

Quality Control Testing

Evaluated by Western Blotting in K562 cell lysate.

Western Blotting Analysis): A 1:10,000 dilution of this antibody detected LIN28B in K562 cell lysate.

Tested Applications

Western Blotting Analysis: A 1:1,000 dilution from a representative lot detected LIN28B in HepG2 cell lysate.

Flow Cytometry Analysis: 1 µg from a representative lot detected LIN28B in one million K562 cells.

Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected LIN28B in HepG2 cells.

Immunohistochemistry (Paraffin) Analysis: A 1:1,000 dilution from a representative lot detected LIN28B in Human placenta tissue sections.

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user.

Biochem/physiol Actions

Clone 1H17 is a ZooMAb^® rabbit recombinant monoclonal antibody that specifically detects LIN28B. It targets an epitope within 22 amino acids from the C-terminal half.

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.

Preparation Note

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.

Reconstitute lyophilized antibody pellet with 25μL of ultrapure water or Phosphate Buffered Saline (PBS). Please refer to our reconstitution protocol and the specific application guidance on the suggested starting dilutions and sample type.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Legal Information

ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany

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.

Safety Information

• Storage Class: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable