Revision 1

#69204Store at -20C

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IP

REACTIVITY:

H

SENSITIVITY:

Endogenous

MW (kDa):

30, 38, 45

SOURCE:

Rabbit

UniProt ID:

#O95343

Entrez-Gene Id:

6496

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunoprecipitation 1:50

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

SIX3 Antibody recognizes endogenous levels of total SIX3 protein. This antibody is not predicted to cross-react with other SIX proteins, based on sequence divergence in the epitope region.

Species Reactivity:

Human

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Arg281 of human SIX3 protein. Antibodies are purified by peptide affinity chromatography.

Background

Sine oculis homeobox (SIX) proteins belong to a family of evolutionarily conserved transcription factors discovered in Drosophila mutant screens for embryonic eye development genes (1-3). The prototypical family member (sine oculis, so) was named for eyeless embryos carrying mutations in a gene highly conserved among vertebrates, including humans (SIX1) (4). A total of six family members (SIX1-6) have been identified in vertebrates. Each SIX protein contains a homeobox nucleic acid recognition domain (HD) with a DNA-binding helix-turn-helix motif and an adjacent SIX domain, which may be involved in regulating protein-protein interactions (5). In addition to their critical functions during embryonic organogenesis, research studies suggest that SIX proteins play additional roles in postnatal cell cycle regulation, with potentially important implications in tumorigenesis (6,7). In addition to its well-established role within gene networks regulating neural patterning and brain development (8,9), SIX3 was more recently reported to regulate postnatal pancreatic β cell maturation, in part by suppressing the expression of genes associate with fetal β cells and various non-β cell types (10,11). Dysregulated expression of SIX3 has also been linked with tumor development. For example, in a study of cell free DNA isolated from plasma, SIX3 was identified as a differentially methylated gene that was diagnostically relevant for patients with pancreatic ductal adenocarcinoma (12). This finding was consistent with earlier reports supporting a role for SIX3 as a tumor suppressor (13-15).

  1. Kumar, J.P. (2009) Cell Mol Life Sci 66, 565-83.
  2. Fischbach, K.F. and Technau, G. (1984) Dev Biol 104, 219-39.
  3. Fischbach, K.F. and Heisenberg, M. (1981) Proc Natl Acad Sci U S A 78, 1105-9.
  4. Boucher, C.A. et al. (1996) Genomics 33, 140-2.
  5. Pignoni, F. et al. (1997) Cell 91, 881-91.
  6. Ford, H.L. et al. (1998) Proc Natl Acad Sci U S A 95, 12608-13.
  7. Coletta, R.D. et al. (2004) Proc Natl Acad Sci U S A 101, 6478-83.
  8. Wallis, D.E. and Muenke, M. (1999) Mol Genet Metab 68, 126-38.
  9. Oliver, G. and Gruss, P. (1997) Trends Neurosci 20, 415-21.
  10. Arda, H.E. et al. (2016) Cell Metab 23, 909-20.
  11. Bevacqua, R.J. et al. (2021) Genes Dev 35, 234-249.
  12. Li, S. et al. (2020) Front Genet 11, 596078.
  13. Yu, Z. et al. (2017) J Hematol Oncol 10, 115.
  14. Zhang, B. et al. (2017) J Neurooncol 133, 509-518.
  15. Zheng, Y. et al. (2018) Theranostics 8, 972-989.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IP: Immunoprecipitation

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
XP is a registered trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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Revision 1
#69204

SIX3 Antibody

Western Blotting Image 1: SIX3 Antibody Expand Image
Western blot analysis of extracts from various cell lines using SIX3 Antibody (upper) and GAPDH (D16H11) XP® Rabbit mAb #5174 (lower). Expression levels of SIX3 among cell lines are consistent with expectations based on publicly available bioinformatic databases, confirming specificity of the antibody for SIX3.
Western Blotting Image 2: SIX3 Antibody Expand Image
Western blot analysis of extracts from 293T cells, mock transfected (lane 1) or transiently transfected with plasmid encoding Myc/DDK-tagged SIX3 protein (lane 2), using SIX3 Antibody (upper), Myc-Tag (71D10) Rabbit mAb #2278 (middle), and GAPDH (D16H11) XP® Rabbit mAb #5174 (lower).
Immunoprecipitation Image 1: SIX3 Antibody Expand Image
Immunoprecipitation of SIX3 protein from IMR-32 cell extracts. Lane 1 is 10% input, lane 2 is Normal Rabbit IgG #2729, and lane 3 is SIX3 Antibody. Western blot analysis was performed using SIX3 Antibody. Anti-rabbit IgG, HRP-linked Antibody #7074 was used as a secondary antibody.