The following text describes a protein:
Function:
Functions via its association with PML-nuclear bodies (PML-NBs) in a wide range of important cellular processes, including tumor suppression, transcriptional regulation, apoptosis, senescence, DNA damage response, and viral defense mechanisms. Acts as the scaffold of PML-NBs allowing other proteins to shuttle in and out, a process which is regulated by SUMO-mediated modifications and interactions. Inhibits EIF4E-mediated mRNA nuclear export by reducing EIF4E affinity for the 5' 7-methylguanosine (m7G) cap of target mRNAs (By similarity). Positively regulates p53/TP53 by acting at different levels (by promoting its acetylation and phosphorylation and by inhibiting its MDM2-dependent degradation). Regulates phosphorylation of ITPR3 and plays a role in the regulation of calcium homeostasis at the endoplasmic reticulum. Regulates RB1 phosphorylation and activity. Acts as both a negative regulator of PPARGC1A acetylation and a potent activator of PPAR signaling and fatty acid oxidation. Regulates translation of HIF1A by sequestering MTOR, and thereby plays a role in neoangiogenesis and tumor vascularization. Regulates PER2 nuclear localization and circadian function. Cytoplasmic PML is involved in the regulation of the TGF-beta signaling pathway. Required for normal development of the brain cortex during embryogenesis. Plays a role in granulopoiesis or monopoiesis of myeloid progenitor cells. May play a role regulating stem and progenitor cell fate in tissues as diverse as blood, brain and breast. Shows antiviral activity towards lymphocytic choriomeningitis virus (LCMV) and the vesicular stomatitis virus (VSV).
Subcellular Localization:
Nucleus. Nucleus, nucleoplasm. Cytoplasm. Nucleus, PML body. Nucleus, nucleolus. Endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side. Early endosome membrane; Peripheral membrane protein; Cytoplasmic side. Note=Detected in the nucleolus after DNA damage. Acetylation at Lys-497 is essential for its nuclear localization. Within the nucleus, most of PML is expressed in the diffuse nuclear fraction of the nucleoplasm and only a small fraction is found in the matrix-associated nuclear bodies (PML-NBs). The transfer of PML from the nucleoplasm to PML-NBs depends on its phosphorylation and sumoylation. The B1 box and the RING finger are also required for the localization in PML-NBs. Also found in specific membrane structures termed mitochondria-associated membranes (MAMs) which connect the endoplasmic reticulum (ER) and the mitochondria (By similarity).
Domain:
The coiled-coil domain mediates a strong homo/multidimerization activity essential for core assembly of PML-NBs; Binds arsenic via the RING-type zinc finger; The Sumo interaction motif (SIM) is required for efficient ubiquitination, recruitment of proteasome components within PML-NBs and PML degradation in response to arsenic trioxide.
Sequence:
METEPVSVQKVPAPPGSPCRQQDSALTPTPTMPPPEEPSEDYEHSQSPAEQAIQEEFQFLRCPSCQAQAKCPKLLPCLHTLCSGCLEAPGLQCPICKAPGQADANGEALDNVFFESLQRRLAVFRQIVDAQAACTRCKGLADFWCFECEQLICSKCFEAHQWYLKHEARPLADLRDNSVSSFLDSTRKSNIFCSNTNHRNPALTDIYCRGCAKPLCCTCALLDRNHSHLHCDIGEEIQQWHEELGTMTQTLEEQGRTFDSAHAQMCSAIGQLDHARADIEKQIRARVRQVVDYVQAQERELLEAVNDRYQRDYQEIAGQLSCLEAVLQRIRTSGALVKRMKLYASDQEVLDMHSFLRKALCSLRQEEPQNQKVQLLTRGFEEFKLCLQDFISCITQRINAAVASPEAASNQPEAASTHPVTTSTPEDLEQPKEVQSVQAQALELSKTQPVAMVKTVPGAHPVPVYAFSMQGPTYREEASQTVGSMKRKCSHEDCSRKIIKMESTEENEDRLATSSPEQSWPSTFKATSPPHLDGTSNPESTVPEKKILLPNNNHVTSDTGETEERVVVISSSEDSDTENLSSHELDDSSSESSSLQLEGPNSLKALDESLAEPHLEDRTLVFFDLKIDNETQKISQLAAVNRESKFRVLIQPEAFSVYSKAVSLEAGLRHFLSFLTTMHRPILACSRLWGPGLPIFFQTLSDINKLWEFQDTISGFLAVLPLIRERIPGASSFKLGNLAKTYLARNMSERSALASVLAMRDLCCLLEISPGLPLAQHIYSFSSLQCFASLQPLIQASVLPQSEARLLALHNVSFVELLNAYRTNRQEGLKKYVHYLSLQTTPLSSSASTQVAQFLQALSTHMEGLLEGHAPAGAEGKAESKGCLA