Envelope surface glycoprotein gp120
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env
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HIV-1 gp120 and p300 synergistically increase TGF-beta, ATF-2 and activating protein-1 (AP-1) expression leading to tubular cell apoptosis; in addition, HIV-1 gp120 treatment causes phosphorylation of Smad2 and downregulation of c-Jun |
PubMed
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env
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HIV-1 gp120-induced apoptosis in human proximal renal tubular cells is significantly enhanced by p300, and Smad7 and an anti-TGF-beta antibody inhibit this effect of p300 |
PubMed
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Tat
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tat
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HIV-1 Tat interaction with p300 and other histone acetyl transferases is preferentially important for Tat-mediated transactivation of integrated, but not unintegrated, HIV-1 LTR promoter |
PubMed
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tat
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Acetylation of HIV-1 Tat by p300 at Lys50 regulates Tat binding to cyclin T1 and HIV-1 TAR RNA, as well as Tat-mediated transactivation of the HIV-1 LTR promoter, by allowing Tat to dissociate from TAR RNA |
PubMed
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tat
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HIV-1 Tat is acetylated by p300 on Lys50 and Lys51 |
PubMed
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tat
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HIV-1 Tat-induced upregulation and phosphorylation of STAT3 expression results in increased GFAP, Egr-1, and p300 transcription and protein expression in both Tat-expressing astrocytes, and HIV-infected astrocytes |
PubMed
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tat
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HIV-1 Tat-induced upregulation of p300 occurs at the transcriptional level through the cis-acting elements of early growth response 1 (egr-1) within its promoter |
PubMed
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tat
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HIV-1 Tat, NAP-1, and p300 synergistically activate HIV-1 transcription |
PubMed
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tat
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Tat stimulates NF-kappaB-inducing kinase IKKalpha translocation from the cytoplasm to the nucleus in monocytes, which leads to IKKalpha and CBP/p300 recruitment to the IL-10 promoter and histone H3 phosphorylation (Ser 10) and acetylation (Lys 14) |
PubMed
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tat
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HIV-1 Tat-mediated upregulation of adenovirus E1a-associated 300 kDa protein p300 regulates increased GFAP expression in astrocytes |
PubMed
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tat
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HIV-1 Tat interaction with p300 increases the histone acetyl transferase (HAT) activity of p300 on histone H4, indicating Tat modulates HAT activity of co-activators to derepress the HIV-1 chromatin structure and aid in activated transcription |
PubMed
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tat
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HIV-1 Tat forms a ternary complex with p300 and P/CAF |
PubMed
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tat
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Binding of HIV-1 Tat to p300 induces a conformational change in the CBP/p300 complex such that it can acquire and bind better to basal transcription factors, indicating Tat helps CBP/p300 recruit new partners to the transcription machinery |
PubMed
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tat
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HIV-1 Tat recruits CBP/p300 to the chromosomally integrated HIV-1 LTR promoter |
PubMed
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tat
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Acetylation of the p50 subunit of NFkappaB by CBP/p300 is regulated by HIV-1 Tat |
PubMed
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tat
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INI-1 and BRG-1 synergize with the p300 acetyltransferase to activate the HIV promoter; this synergism depends on the acetyltransferase activity of p300 and on HIV-1 Tat amino acids Lys(50) and Lys(51), suggesting a regulation of Tat by these proteins |
PubMed
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tat
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HIV-1 Tat binds to the minimal histone acetyltransferase domain (amino acids 1253-1710) and E1a binding domain (amino acids 1542-1710) of p300, an effect mediated by the basic domain (amino acids 48-57) of Tat |
PubMed
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tat
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HIV-1 Tat induces the polyubiquitination and degradation of Tip60 through p300/CBP-associated E4-type ubiquitin-ligase activity, which results in a dramatic impairment of the Tip60-dependent apoptotic cell response to DNA damage |
PubMed
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Vpr
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vpr
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HIV-1 Vpr and p300/HAT colocalizes with CENP-A and CENP-H proteins in the centromere and arm region of chromosome |
PubMed
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vpr
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HIV-1 Vpr actively recruits p300/HAT to a range of chromatine regions including the centromere, resulting in the displacement of HP1-alpha |
PubMed
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vpr
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Data suggests that HIV-1 Vpr, Rel A, and p300 act in concert to activate HIV transcription |
PubMed
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vpr
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Adenovirus E1A protein represses activation by Vpr by competing for binding to p300, suggesting that p300 is required for activation of HIV transcription by Vpr |
PubMed
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vpr
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Transcription Factor IIH (TFIIH) and p300 act cooperatively to enhance Vpr effects on glucocorticoid receptor transactivation |
PubMed
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vpr
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The C-terminus of HIV-1 Vpr (amino acids 64-84) mediates the binding of Vpr to p300 (amino acids 2045-2191) |
PubMed
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vpr
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HIV-1 Vpr transactivation of HIV transcription and of the glucocorticoid receptor pathway is mediated by direct binding to the p300 co-activator |
PubMed
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integrase
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gag-pol
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The interaction between HIV-1 IN and KAP1 is highly favored by HAT/p300-mediated IN acetylation |
PubMed
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gag-pol
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HAT/p300 acetylates lysine's 264, 266, and 273 of HIV-1 IN |
PubMed
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