Western Blot (WB)
(Western blot detection of KAP1 in K562,C6,3T3,Hela cell lysates using KAP1 Rabbit pAb(1:1000 diluted). Predicted band size:89kDa. Observed band size:100kDa.)
Rabbit KAP1 Polyclonal Antibody | anti-TRIM28 antibody
KAP1 Rabbit pAb
IHC: 1:50
ICC/IF: 1:50
Western Blot (WB)
(Western blot detection of KAP1 in K562,C6,3T3,Hela cell lysates using KAP1 Rabbit pAb(1:1000 diluted). Predicted band size:89kDa. Observed band size:100kDa.)
Western Blot (WB)
(Western blot detection of KAP1 in K562,C6,3T3,Hela cell lysates using KAP1 Rabbit pAb(1:1000 diluted). Predicted band size:89kDa. Observed band size:100kDa.)
Nuclear corepressor for KRAB domain-containing zinc finger proteins (KRAB-ZFPs). Mediates gene silencing by recruiting CHD3, a subunit of the nucleosome remodeling and deacetylation (NuRD) complex, and SETDB1 (which specifically methylates histone H3 at 'Lys-9' (H3K9me)) to the promoter regions of KRAB target genes. Enhances transcriptional repression by coordinating the increase in H3K9me, the decrease in histone H3 'Lys-9 and 'Lys-14' acetylation (H3K9ac and H3K14ac, respectively) and the disposition of HP1 proteins to silence gene expression. Recruitment of SETDB1 induces heterochromatinization. May play a role as a coactivator for CEBPB and NR3C1 in the transcriptional activation of ORM1. Also corepressor for ERBB4. Inhibits E2F1 activity by stimulating E2F1-HDAC1 complex formation and inhibiting E2F1 acetylation. May serve as a partial backup to prevent E2F1-mediated apoptosis in the absence of RB1. Important regulator of CDKN1A/p21(CIP1). Has E3 SUMO-protein ligase activity toward itself via its PHD-type zinc finger. Also specifically sumoylates IRF7, thereby inhibiting its transactivation activity. Ubiquitinates p53/TP53 leading to its proteosomal degradation; the function is enhanced by MAGEC2 and MAGEA2, and possibly MAGEA3 and MAGEA6. Mediates the nuclear localization of KOX1, ZNF268 and ZNF300 transcription factors. In association with isoform 2 of ZFP90, is required for the transcriptional repressor activity of FOXP3 and the suppressive function of regulatory T-cells (Treg) (PubMed:23543754). Probably forms a corepressor complex required for activated KRAS-mediated promoter hypermethylation and transcriptional silencing of tumor suppressor genes (TSGs) or other tumor-related genes in colorectal cancer (CRC) cells (PubMed:24623306). Also required to maintain a transcriptionally repressive state of genes in undifferentiated embryonic stem cells (ESCs) (PubMed:24623306). Associates at promoter regions of tumor suppressor genes (TSGs) leading to their gene silencing (PubMed:24623306). The SETDB1-TRIM28-ZNF274 complex may play a role in recruiting ATRX to the 3'-exons of zinc-finger coding genes with atypical chromatin signatures to establish or maintain/protect H3K9me3 at these transcriptionally active regions (PubMed:27029610). Acts as a corepressor for ZFP568.
NCBI and Uniprot Product Information
NCBI Description
The protein encoded by this gene mediates transcriptional control by interaction with the Kruppel-associated box repression domain found in many transcription factors. The protein localizes to the nucleus and is thought to associate with specific chromatin regions. The protein is a member of the tripartite motif family. This tripartite motif includes three zinc-binding domains, a RING, a B-box type 1 and a B-box type 2, and a coiled-coil region. [provided by RefSeq, Jul 2008]
Uniprot Description
TIF1B: an atypical protein kinase that functions as a transcriptional coactivator. Mediates transcriptional regulation by interaction with the Kruppel-associated box (KRAB) repression domain found in many transcription factors. Binds to the negative regulatory domain of c-Myb and negatively regulates the c-Myb-dependent trans-activation. Localizes to the nucleus and is thought to associate with specific chromatin regions. Phosphorylated in an ATM-dependent manner following double-strand breaks. Its phosphorylation in response to DNA damage leads to chromatin relaxation. A member of the tripartite motif family. The tripartite motif includes three zinc-binding domains, a RING, a B-box type 1 and a B-box type 2, and a coiled-coil region.
Protein type: EC 6.3.2.-; Ligase; Protein kinase, atypical; Ubiquitin conjugating system; Kinase, protein; Ubiquitin ligase; Nuclear receptor co-regulator; Transcription, coactivator/corepressor; ATYPICAL group; TIF1 family
Chromosomal Location of Human Ortholog: 19q13.4
Cellular Component: nucleoplasm; nuclear heterochromatin; nucleus
Molecular Function: protein binding; DNA binding; zinc ion binding; sequence-specific DNA binding; ubiquitin protein ligase binding; transcription coactivator activity; ubiquitin-protein ligase activity; transcription factor activity; transcription corepressor activity; ligase activity; protein kinase activity
Biological Process: transcription initiation from RNA polymerase II promoter; convergent extension involved in axis elongation; positive regulation of DNA repair; protein amino acid autophosphorylation; positive regulation of transcription, DNA-dependent; protein ubiquitination; negative regulation of transcription from RNA polymerase II promoter; DNA repair; protein oligomerization; protein sumoylation; positive regulation of transcription factor import into nucleus; innate immune response; epithelial to mesenchymal transition; gene expression; negative regulation of transcription, DNA-dependent; DNA methylation during embryonic development; embryo implantation
Research Articles on TRIM28
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Product Notes
The TRIM28 trim28 (Catalog #AAA4752049) is an Antibody produced from Rabbit and is intended for research purposes only. The product is available for immediate purchase. The KAP1 Rabbit pAb reacts with Human, Mouse, Rat and may cross-react with other species as described in the data sheet. AAA Biotech's KAP1 can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB), Immunohistochemistry (IHC), Immunocytochemistry (ICC), Immunofluorescence (IF). WB: 1:1000 IHC: 1:50 ICC/IF: 1:50. Researchers should empirically determine the suitability of the TRIM28 trim28 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "KAP1, Polyclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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