Catalog # SX5535

methylated Sox2 (Lys-119) Peptide

Blocking Peptide

Application / Dilution
ELISA50 ng/well

Size 50 μg



Embryonic stem cells can maintain a pluripotent state that is controlled by a set of transcription factors that include Oct-4, Sox2, and Nanog. Chromatin immunoprecipitation experiments show that Sox2 and Oct-4 bind to thousands of gene regulatory sites, many of which regulate cell pluripotency and early embryonic development. siRNA knockdown of either Sox2 or Oct-4 results in loss of pluripotency, while overexpression of Oct-4 and Sox2, along with additional transcription factors Klf4 and c-Myc, can reprogram somatic cells to a pluripotent state. Sox2 also regulates adult multipotent progenitors in various epithelial tissues, and may be important for survival and regeneration of these tissues. The activity of Sox2 may be regulated by phosphorylation and methylation. Akt1 phosphorylates Thr-118 and enhances Sox2 transcriptional activity, while Set7 can monomethylate Lys-119 leading to inhibition of Sox2 transcriptional activity, as well as Sox2 ubiquination and degradation. In addition, Sox2 Thr-128 is constituitively phoshorylated in the F9 mouse stem cell line.


Fang, L.. et al. (2014) Mol Cell. 55(4):537.
Jeong, C.H. et al. (2010) Stem Cells. 28(12):2141.
Loh, Y.H. et al. (2006) Nat Genet. 38:431.
Boyer, L.A. et al. (2005) Cell. 122:947.

Methylated-Sox2 (Lys-119) synthetic peptide corresponding to amino acids surrounding Lys-119 in mouse Sox2. This site is well conserved in rat and human Sox2, and has high homology with the conserved site in Sox1 (Lys-127) and Sox3 (Lys-145), but low homology to other Sox family members.

*For more information, see UniProt Accession P48432
Blocking Peptide is supplied in 50µl phosphate-buffered saline and 0.05% sodium azide.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

The peptide is specifically recognized by Sox2 (Lys-119) methyl-specific antibody (SP5531) in ELISA, and has been shown to block the reactivity of SP5531 in Western blot. In addition, the peptide is recommended for use in blocking SP5531 reactivity in immunocytochemistry.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: