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Anti-TSG101 Antibody, clone 2H18 ZooMAb® Rabbit Monoclonal

enhanced validationgreener alternative

recombinant, expressed in HEK 293 cells

biological source


Quality Level


expressed in HEK 293 cells



antibody form

purified antibody

antibody product type

primary antibodies


2H18, recombinant monoclonal


recombinant, expressed in HEK 293 cells

product line

ZooMAb® learn more



mol wt

calculated mol wt 43.94 kDa
observed mol wt ~19 kDa

species reactivity

mouse, human

species reactivity (predicted by homology)

bovine, rat, monkey, porcine


antibody small pack of 25 μL

greener alternative product characteristics

Waste Prevention
Designing Safer Chemicals
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

enhanced validation

recombinant expression
Learn more about Antibody Enhanced Validation


affinity binding assay: suitable
immunocytochemistry: suitable
immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
western blot: suitable



epitope sequence

C-terminal half

Protein ID accession no.

UniProt accession no.

greener alternative category

shipped in


storage temp.


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.
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.


Clone 2H18 is a ZooMAb® rabbit recombinant monoclonal antibody that specifically detects Tumor susceptibility gene 101 protein (TSG101). It targets an epitope within 19 amino acids from the C-terminal half.


KLH-conjugated linear peptide corresponding to 19 amino acids from the C-terminal half of human Tumor susceptibility gene 101 protein (TSG101).


25, 25 μL


Quality Control Testing

Evaluated by Western Blotting in HeLa cell lysate.

Western Blotting Analysis: A 1:10,000 dilution of this antibody detected TSG101 in HeLa cell lysate.

Tested applications

Western Blotting Analysis: A 1:10,000 dilution from a representative lot detected TSG101 in MCF-7, NIH3T3, and Mouse brain tissue lysates.

Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected TSG101 in MCF-7 cell line.

Immunohistochemistry (Paraffin) Analysis: A 1:100 dilution from a representative lot detected TSG101 in human colon tissue sections.

Affinity Binding Assay: A representative lot of this antibody bound TSG101 with a KD of 7.7 x 10-8 in an affinity binding assay.

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user
Anti-TSG101, clone 2H18 ZooMAb®, Cat. No. ZRB1244, is a recombinant Rabbit monoclonal antibody that specifically targets TSG101 and is tested for use in Affinity Binding Assay, Immunocytochemistry, Immunohistochemistry (Paraffin), and Western Blotting.

Target description

Tumor susceptibility gene 101 protein (UniProt: Q99816; also known as ESCRT-I complex subunit TSG101) is encoded by the TSG101 (Gene ID: 7251) in human. TSG101 is a ubiquitously expressed protein that is mainly localized in the cytoplasm. However, when active it is membrane associated and is inactive when in soluble form. It is also found in the nucleus during the late S phase and co-localizes with spindle apparatus during mitotic cell division. Human TSG101 contains four known structural domains: an N-terminal UEV domain, followed by a proline-rich region, a coiled coil region, and a C-terminal -helical/steadiness box domain. TSG101 mediates a variety of intracellular processes, including cell growth and differentiation, but its major role in in endosomal trafficking of cargo proteins. It is a component of the ESCRT-I complex that associates with VPS28 and VPS37 protein. It binds to ubiquitinated cargo proteins and is required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies (MVBs). It is also involved in the extracellular release of micro vesicles that differ from the exosomes. TSG101 gene is considered as a housekeeping gene and its knockout is reported to cause embryonic lethality. Loss of TSG101 is reported to trigger an accumulation of p53 and cell cycle arrest leading to cell death. Although it is considered as an tumor suppressor, its elevated levels of are observed in some epithelial cancer cells. This ZooMAb® recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals. (Ref.: Ferraiuolo, RM., et al. (2020). Cancers (Basel). 12(2); 450; Jiang, Y., et al. (2013). Front. Biosci. 18; 279-288).

Physical form

Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS with 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.


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.

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.

Legal Information

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


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.

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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