BYSL Full-Length MS Protein Standard


Product Description:

Name BYSL Full-Length MS Protein Standard
Cat# CPFL308675
Protein Namebystin-like
SymbolBYSL
SynonymsBYSTIN
AccessionNM_004053
Cytogenetic6p21.1
Amino Acid Labeled[U- 13C6, 15N4]-L-Arg and [U- 13C6, 15N2]-L-Lys
Chemical Purity> 80% as determined by SDS-PAGE and Coomassie blue staining
Expression HostHuman HEK293 cells
Predicted MW49.4 kDa
Expression TrueORF CloneRC208675
DescriptionBYSL Full-Length MS Protein Standard (NP_004044), Labeled with [U- 13C6, 15N4]-L-Arginine and [U- 13C6, 15N2]-L-Lysine, was produced in human 293 cells (HEK293) with fully chemically defined cell culture medium to obtain incorporation efficiency at Creative-Proteomics. Bystin is expressed as a 2-kb major transcript and a 3.6-kb minor transcript in SNG-M cells and in human trophoblastic teratocarcinoma HT-H cells. Protein binding assays determined that bystin binds directly to trophinin and tastin, and that binding is enhanced when cytokeratins 8 and 18 are present. Immunocytochemistry of HT-H cells showed that bystin colocalizes with trophinin, tastin, and the cytokeratins, suggesting that these molecules form a complex in trophectoderm cells at the time of implantation. Using immunohistochemistry it was determined that trophinin and bystin are found in the placenta from the sixth week of pregnancy. Both proteins were localized in the cytoplasm of the syncytiotrophoblast in the chorionic villi and in endometrial decidual cells at the uteroplacental interface. After week 10, the levels of trophinin, tastin, and bystin decreased and then disappeared from placental villi.

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