TRIP4 Antibody - #DF3295

Transcription coactivator which associates with nuclear receptors, transcriptional coactivators including EP300, CREBBP and NCOA1, and basal transcription factors like TBP and TFIIA to facilitate nuclear receptors-mediated transcription. May thereby play an important role in establishing distinct coactivator complexes under different cellular conditions. Plays a role in thyroid hormone receptor and estrogen receptor transactivation. Also involved in androgen receptor transactivation (By similarity). Plays a pivotal role in the transactivation of NF-kappa-B, SRF and AP1. Acts as a mediator of transrepression between nuclear receptor and either AP1 or NF-kappa-B. May play a role in the development of neuromuscular junction. May play a role in late myogenic differentiation (By similarity).

Phosphorylated by NEK6.

Polyufmylated by the UFM1-conjugating system composed of the enzymes UBA5, UFC1 and UFL1. Deufmylated by the protease UFSP2. Ufmylation of TRIP4 is promoted by ligand-bound nuclear receptors that compete with UFSP2 for interaction with TRIP4. Nuclear receptors-induced ufmylation promotes the recruitment of additional transcriptional coactivators like EP300 and NCOA1 and therefore the assembly of a coactivator complex facilitating nuclear receptor-mediated transcription.

Nucleus. Cytoplasm>Cytosol. Cytoplasm>Cytoskeleton>Microtubule organizing center>Centrosome.
Note: Cytoplasmic under conditions of serum deprivation (PubMed:10454579). Colocalizes with NEK6 in the centrosome (PubMed:20873783).

Interacts with the thyroid hormone receptor/TR (via the ligand-binding domain); this interaction requires the presence of thyroid hormone. Interacts with the androgen receptor/AR; in an androgen, testosterone and dihydrotestosterone-dependent manner. Interacts with ESR1 (estrogen ligand-bound); competes with UFSP2. Interacts with UFSP2; competes with ligand-bound ESR1. Interacts with DDRGK1 and UFL1; the interaction with DDRGK1 is direct. Interacts with NCOA1. Interacts with EP300. Part of the ASC-1 complex, that contains TRIP4, ASCC1, ASCC2 and ASCC3. Interacts with NEK6. Interacts with CSRP1.

The C4-type zinc finger mediates a competitive interaction with UFSP2 and ligand-bound nuclear receptors. It also mediates interaction with the transcriptional coactivators and the basal transcription machinery.