TSG101 Antibody Blocking Peptide

Name: TSG101 Antibody Blocking Peptide
Brand: Novus Biologicals
SKU: NBP2-77452PEP

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-77452PEP

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Preparation & Storage
Background
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Specific Notices

Key Product Details

Conjugate

Unconjugated

Applications

Antibody Competition

View all TSG101 Proteins and Enzymes »

Product Specifications

Description

Application Notes

This peptide is useful as a blocking peptide for NBP2-77452. For further blocking peptide related protocol, click here.

Specificity

This peptide is specific for NBP2-77452 only.

Protein / Peptide Type

Antibody Blocking Peptide

Formulation, Preparation and Storage

NBP2-77452PEP

Formulation	Peptide dissolved in dH20. Contains no BSA.
Preservative	No Preservative
Concentration	1 mg/ml
Shipping	The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage	Store at -80C. Avoid freeze-thaw cycles.

Background: TSG101

Tumor susceptibility 101 protein (human TSG101 theoretical molecular weight 44kDa) is the mammalian homologue of the yeast protein Vps23 which plays a role in endosomal and multivesicular body trafficking. TSG101 forms part of the endosomal sorting complexes required for transport complex 1 (ESCRT-I), a cytosolic multiprotein complex consisting additionally of Vps28, Vps37 (A-D) and Mvb12 (A, B) or UBAP1 (1). TSG101 contains multiple domains including the amino terminal ubiquitin e2 variant (UEV) domain, a proline-rich (RRR) domain, a coiled coil (CC) domain, and a carboxy terminal alpha-helical/steadiness box (SB) domain (2). As part of the ESCRT-I complex, TSG101 interacts through its UEV domain with ubiquitinated membrane proteins and members of the ESCRT-0 complex. The UEV domain plays a critical role for various TSG101 functions such as protein sorting into multivesicular bodies and late endosomes, and in the process of viral budding. For example, TSG101 interacts with the intermediate-conductance, Ca2+ -activated K+ channel (KCa3.1), facilitating its targeting to the lysosome for degradation (3). Additionally, TSG101 has been implicated in the turnover of connexins such as connexins 43 and 45 (4). TSG101 plays a role in other cellular functions including transcriptional regulation, cytokinesis and cell growth (2).

Upon its initial discovery, TSG101 was recognized as a tumor suppressor protein due to the identification of deletions within the TSG101 gene in human breast carcinomas. However, re-examination of the initial findings argued against this function and supported that TSG101 promotes tumorigenesis (2). In agreement with this role, TSG101 expression is upregulated in several types of cancer including breast, ovarian, and colorectal carcinoma.

References

1. Schmidt, O., & Teis, D. (2012). The ESCRT machinery. Current Biology. https://doi.org/10.1016/j.cub.2012.01.028

2. Jiang, Y., Ou, Y., & Cheng, X. (2013). Role of TSG101 in cancer. Frontiers in Bioscience. https://doi.org/10.2741/4099

3. Balut, C. M., Gao, Y., Murray, S. A., Thibodeau, P. H., & Devor, D. C. (2010). ESCRT-dependent targeting of plasma membrane localized KCa3.1 to the lysosomes. American Journal of Physiology - Cell Physiology. https://doi.org/10.1152/ajpcell.00120.2010

4. Su, V., & Lau, A. F. (2014). Connexins: Mechanisms regulating protein levels and intercellular communication. FEBS Letters. https://doi.org/10.1016/j.febslet.2014.01.013

Long Name

Tumor Susceptibility 101

Alternate Names

TSG10, VPS23

Gene Symbol

TSG101

Additional TSG101 Products

Product Documents for TSG101 Antibody Blocking Peptide

Product Datasheets

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COA

Product Specific Notices for TSG101 Antibody Blocking Peptide

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

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