RelB Forms Transcriptionally Inactive Complexes with RelA/p65

Organization of Transcriptionally Active and Inactive Chromatin

Der Aufbau des Nukleosoms als Grundbaustein des Chromatins der Eukaryontenzelle, mit Ausnahme des Dinoflagellaten-Zellkerns, wird biochemisch und elektronenmikroskopisch vorgestellt als eine Einheit eines Oktamers aus Histonen (2 X H2A, 2XH2B, 2X H3, 2X H4) und einem Betrag von etwa 150 Basenpaaren DNA. Diese Partikel sind durch einen Zwischenbereich von weiteren etwa 50 Basenpaaren DNA verbund...

A Transcriptionally Inactive ATF2 Variant Drives Melanomagenesis.

Melanoma is one of the most lethal cutaneous malignancies, characterized by chemoresistance and a striking propensity to metastasize. The transcription factor ATF2 elicits oncogenic activities in melanoma, and its inhibition attenuates melanoma development. Here, we show that expression of a transcriptionally inactive form of Atf2 (Atf2(Δ8,9)) promotes development of melanoma in mouse models. A...

Characterisation of transcriptionally active and inactive chromatin domains in neurons.

The tandemly organised ribosomal DNA (rDNA) repeats are transcribed by a dedicated RNA polymerase in a specialised nuclear compartment, the nucleolus. There appears to be an intimate link between the maintenance of nucleolar structure and the presence of heterochromatic chromatin domains. This is particularly evident in many large neurons, where a single nucleolus is present, which is separated...

Cytokine-Induced YKL-40 Expression RelB/p50 Complexes Regulate

The basic-helix-loop-helix-PAS orphan MOP3 forms transcriptionally active complexes with circadian and hypoxia factors.

We report that MOP3 is a general dimerization partner for a subset of the basic-helix-loop-helix (bHLH)-PER-ARNT-SIM (PAS) superfamily of transcriptional regulators. We demonstrated that MOP3 interacts with MOP4, CLOCK, hypoxia-inducible factor 1alpha (HIF1alpha), and HIF2alpha. A DNA selection protocol revealed that the MOP3-MOP4 heterodimer bound a CACGTGA-containing DNA element. Transient tr...