PML: a zinc-finger protein that can regulate transcription and can localize to nuclear bodies. Cytoplasmic forms regulate glycolysis by inhibiting the tetrameric form of PKM2. Together with SATB1, involved in local chromatin-loop remodeling and gene expression regulation at the MHC-I locus. Interacts with SIRT1, TOPBP1, TRIM27 and TRIM69. Sumoylated forms interact with SATB1 and localize to the PML nuclear bodies. Sumoylation on three sites is required for nuclear body formation. Sumoylation on Lys-160 is a prerequisite for sumoylation on Lys-65. The B1 box and the RING finger are also required for localization to nuclear bodies. May play an important role in recruitment of ELF4 into PML nuclear bodies. A chromosomal aberration involving PML can cause acute promyelocytic leukemia (APL). Seven alternatively-spliced human isoforms have been reported.
Protein type: Nucleolus; Oncoprotein; Transcription factor; Tumor suppressor; Ubiquitin conjugating system
Chromosomal Location of Human Ortholog: 15q22
Cellular Component: cytoplasm; cytosol; nuclear chromosome, telomeric region; nuclear membrane; nucleolus; nucleoplasm; nucleus; PML body
Molecular Function: protein binding; protein homodimerization activity; SUMO binding; ubiquitin protein ligase binding
Biological Process: circadian regulation of gene expression; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; DNA damage response, signal transduction by p53 class mediator resulting in induction of apoptosis; endoplasmic reticulum calcium ion homeostasis; entrainment of circadian clock by photoperiod; innate immune response; maintenance of protein localization in nucleus; negative regulation of angiogenesis; negative regulation of cell growth; negative regulation of cell proliferation; negative regulation of transcription, DNA-dependent; PML body organization and biogenesis; positive regulation of telomere maintenance; proteasomal ubiquitin-dependent protein catabolic process; protein complex assembly; protein sumoylation; regulation of circadian rhythm; regulation of protein amino acid phosphorylation; regulation of transcription, DNA-dependent; response to cytokine stimulus; response to hypoxia
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