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Product Name
Anti-KAP1 (4E1) Mouse antibody
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Description
KAP1 (4E1) Mouse monoclonal antibody
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Tested applications
WB, ICC/IF, IHC-P, IP
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Species reactivity
Human
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Alternative names
E3 SUMO protein ligase TRIM28;E3 SUMO-protein ligase TRIM28;FLJ29029;KAP 1;KAP-1;KRAB associated protein 1;KRAB interacting protein 1;KRAB-associated protein 1;KRAB-interacting protein 1;KRIP 1;KRIP-1;KRIP1;Nuclear corepressor KAP 1;Nuclear corepressor KA antibody
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Isotype
Mouse IgG1
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Preparation
Antigen: Purified recombinant human KAP1 / TIF1 beta protein fragments expressed in E.coli.
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Clonality
Monoclonal
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Formulation
Purified mouse monoclonal in buffer containing 0.1M Tris-Glycine (pH 7.4 150 mM NaCl) with 0.02% sodium azide 50% glycerol
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Storage instructions
Store at 4°C short term. Store at -20°C long term. Avoid freeze / thaw cycle.
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Applications
WB: 1/1000
;ICC: 1/100
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Validations
IHC of paraffin-embedded human Spleen using anti-KAP1 / TIF1 beta diluted 1/500-1/1000.
Western blot detection of KAP1 / TIF1 beta in 293T and HepG2 cell lysates using KAP1 / TIF1 beta mouse mAb (1:1000 diluted).Observed band size: 110KDa.
Immunoprecipitation analysis of Hela cell lysates using KAP1 / TIF1 beta mouse mAb.
Immunocytochemistry staining of HeLa cells fixed with 4% Paraformaldehyde and using anti-KAP1 / TIF1 beta mouse mAb (dilution 1:100).
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Background
Swiss-Prot Acc.Q13263.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.
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