Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Storage bufferPreservative: 0.02% Sodium Azide
Constituents: 0.5% BSA, Tris buffered saline, pH 7.3
Concentration information loading...
PurityImmunogen affinity purified
Purification notesPurified from goat serum by ammonium sulphate precipitation followed by antigen affinity chromatography using the immunizing peptide.
Our Abpromise guarantee covers the use of ab106941 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||Use a concentration of 0.3 - 1 µg/ml. Detects a band of approximately 86, 110 kDa (predicted molecular weight: 86 kDa).|
|IHC-P||Use a concentration of 3 - 5 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
FunctionCrucial silencing factor contributing to the initiation of X inactivation mediated by Xist RNA that occurs during embryogenesis and in lymphoma (By similarity). Binds to DNA at special AT-rich sequences, the consensus SATB1-binding sequence (CSBS), at nuclear matrix- or scaffold-associated regions. Thought to recognize the sugar-phosphate structure of double-stranded DNA. Transcriptional repressor controlling nuclear and viral gene expression in a phosphorylated and acetylated status-dependent manner, by binding to matrix attachment regions (MARs) of DNA and inducing a local chromatin-loop remodeling. Acts as a docking site for several chromatin remodeling enzymes (e.g. PML at the MHC-I locus) and also by recruiting corepressors (HDACs) or coactivators (HATs) directly to promoters and enhancers. Modulates genes that are essential in the maturation of the immune T-cell CD8SP from thymocytes. Required for the switching of fetal globin species, and beta- and gamma-globin genes regulation during erythroid differentiation. Plays a role in chromatin organization and nuclear architecture during apoptosis. Interacts with the unique region (UR) of cytomegalovirus (CMV). Alu-like motifs and SATB1-binding sites provide a unique chromatin context which seems preferentially targeted by the HIV-1 integration machinery. Moreover, HIV-1 Tat may overcome SATB1-mediated repression of IL2 and IL2RA (interleukin) in T-cells by binding to the same domain than HDAC1. Delineates specific epigenetic modifications at target gene loci, directly upregulating metastasis-associated genes while downregulating tumor-suppressor genes. Reprograms chromatin organization and the transcription profiles of breast tumors to promote growth and metastasis.
Tissue specificityExpressed predominantly in thymus.
Sequence similaritiesBelongs to the CUT homeobox family.
Contains 2 CUT DNA-binding domains.
Contains 1 homeobox DNA-binding domain.
modificationsSumoylated. Sumoylation promotes cleavage by caspases.
Phosphorylated by PKC. Acetylated by PCAF. Phosphorylated form interacts with HDAC1, but unphosphorylated form interacts with PCAF. DNA binding properties are activated by phosphorylation and inactivated by acetylation. In opposition, gene expression is down-regulated by phosphorylation but up-regulated by acetylation.
Cleaved at Asp-254 by caspase-3 and caspase-6 during T-cell apoptosis in thymus and during B-cell stimulation. The cleaved forms can not dimerize and lose transcription regulation function because of impaired DNA and chromatin association.
Cellular localizationNucleus matrix. Nucleus > PML body. Organized into a cage-like network anchoring loops of heterochromatin and tethering specialized DNA sequences. When sumoylated, localized in promyelocytic leukemia nuclear bodies.
- Information by UniProt
FormThere are 2 isoforms produced by alternative splicing.
- DNA binding protein SATB1 antibody
- DNA-binding protein SATB1 antibody
- SATB homeobox 1 antibody
Anti-SATB1 antibody (ab106941) at 0.3 µg/ml + MOLT4 cell lysate (in RIPA buffer) at 35 µg
Developed using the ECL technique.
Predicted band size: 86 kDa
Observed band size: 85 kDa why is the actual band size different from the predicted?
Additional bands at: 110 kDa. We are unsure as to the identity of these extra bands.
Exposure time: 1 hour
The observed 110kDa band corresponds to earlier findings in literature with different antibodies.
ab106941 (3.8µg/ml) staining of paraffin embedded Human Thymus shows select nuclear staining. Steamed antigen retrieval with citrate buffer pH 6, AP-staining.
ab106941 has not yet been referenced specifically in any publications.