Recombinant Human TSG101 His Protein

SDS-Page: Recombinant Human TSG101 Protein [NBP1-44489] - TSG101, 20.7 kDa (181aa), confirmed by MALDI-TOF with a purity of 90% by SDS - PAGE

• Reactivity: Hu
• Applications: PAGE
• Concentration: 0.5 mg/ml

Recombinant Human TSG101 His Protein Summary

• Description: A recombinant protein with a N-Terminal His-tag and corresponding to the amino acids 1-145 of Human TSG101
  
  

  Source: E.coli

  Amino Acid Sequence: MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSMAVS ESQLKKMVSK YKYRDLTVRE TVNVITLYKD LKPVLDSYVF NDGSSRELMN LTGTIPVPYR GNTYNIPICL WLLDTYPYNP PICFVKPTSS MTIKTGKHVD ANGKIYLPYL HEWKHPQSDL LGLIQVMIVV FGDEPPVFSR P

• Source: E. coli
• Protein/Peptide Type: Recombinant Protein
• Gene: TSG101
• Purity: >90%, by SDS-PAGE

Applications/Dilutions

• Dilutions:
  • SDS-Page
• Theoretical MW: 20.7 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
• Buffer: 20 mM Tris-HCl buffer (pH8.0), 1 mM DTT, 10% glycerol
• Preservative: No Preservative
• Concentration: 0.5 mg/ml
• Purity: >90%, by SDS-PAGE

Alternate Names for Recombinant Human TSG101 His Protein

• ESCRT-I complex subunit TSG101
• TSG10
• TSG101
• tumor susceptibility gene 10
• tumor susceptibility gene 101 protein
• tumor susceptibility gene 101
• tumor susceptibility protein
• VPS23

Background

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

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

Bioinformatics

• Gene Symbol: TSG101