Descriptions
p53 protein has the function encompassing the N-terminal domain containing the activation domain, the central core containing its sequence-specific DNA-binding domain, and the multifunctional C-terminal domain. The p53 protein contains several functional domains: An N-terminal transactivation domain (NTAD, residues 1–61), a proline-rich domain (PRD, 62–90), a DNA-binding domain (DBD), a nuclear localization signal, a tetramerization domain (TET), and a C-terminal domain (CTD). <br> Thr55 phosphorylation inhibits DNA-binding by enhancing competitive interactions between the disordered transactivation domain 2 (TAD2) and the structured DBD. This autoinhibition is driven by favorable interactions between the DNA-binding surface of the DBD and the multiple phosphorylated TAD2. Also, the removal of the PRD strengthens the TAD2–DBD interaction and leads to autoinhibition of DNA binding even in the absence of Thr55 phosphorylation. <br>However, deletion of CTD influences p53 transactivation functions but does not discriminate between proapoptotic or prosurvival genes. Serine 366 is one of several residues phosphorylated by CHK2 after DNA damage, a modification that seemed only required for the activation of a subset of p53 target genes.
Autoinhibitory domains (AIDs)
Target domain |
100-289 (DBD domain) |
Relief mechanism |
PTM |
Assay |
|
Accessory elements
No accessory elements
Autoinhibited structure
Activated structure
1 structures for P61260
| Entry ID | Method | Resolution | Chain | Position | Source |
|---|---|---|---|---|---|
| AF-P61260-F1 | Predicted | AlphaFoldDB |
No variants for P61260
| Variant ID(s) | Position | Change | Description | Diseaes Association | Provenance |
|---|---|---|---|---|---|
| No variants for P61260 | |||||
1 associated diseases with P61260
Without disease ID
4 regional properties for P61260
Functions
8 GO annotations of cellular component
| Name | Definition |
|---|---|
| centrosome | A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle. |
| cytoplasm | The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. |
| endoplasmic reticulum | The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached). |
| mitochondrial matrix | The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation. |
| mitochondrion | A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration. |
| nucleolus | A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome. |
| nucleus | A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. |
| PML body | A class of nuclear body; they react against SP100 auto-antibodies (PML, promyelocytic leukemia); cells typically contain 10-30 PML bodies per nucleus; alterations in the localization of PML bodies occurs after viral infection. |
6 GO annotations of molecular function
| Name | Definition |
|---|---|
| ATP-dependent DNA/DNA annealing activity | An ATP-dependent activity that facilitates the formation of a complementary double-stranded DNA molecule. |
| copper ion binding | Binding to a copper (Cu) ion. |
| DNA binding | Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid). |
| DNA-binding transcription factor activity, RNA polymerase II-specific | A DNA-binding transcription factor activity that modulates the transcription of specific gene sets transcribed by RNA polymerase II. |
| promoter-specific chromatin binding | Binding to a section of chromatin that is associated with gene promoter sequences of DNA. |
| RNA polymerase II cis-regulatory region sequence-specific DNA binding | Binding to a specific upstream regulatory DNA sequence (transcription factor recognition sequence or binding site) located in cis relative to the transcription start site (i.e., on the same strand of DNA) of a gene transcribed by RNA polymerase II. |
13 GO annotations of biological process
| Name | Definition |
|---|---|
| cell aging | OBSOLETE. An aging process that has as participant a cell after a cell has stopped dividing. Cell aging may occur when a cell has temporarily stopped dividing through cell cycle arrest (GO:0007050) or when a cell has permanently stopped dividing, in which case it is undergoing cellular senescence (GO:0090398). May precede cell death (GO:0008219) and succeed cell maturation (GO:0048469). |
| cell cycle | The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division. |
| cellular response to DNA damage stimulus | Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism. |
| circadian behavior | The specific behavior of an organism that recurs with a regularity of approximately 24 hours. |
| entrainment of circadian clock by photoperiod | The synchronization of a circadian rhythm to photoperiod, the intermittent cycle of light (day) and dark (night). |
| negative regulation of cell growth | Any process that stops, prevents, or reduces the frequency, rate, extent or direction of cell growth. |
| negative regulation of transcription, DNA-templated | Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription. |
| nucleotide-excision repair | A DNA repair process in which a small region of the strand surrounding the damage is removed from the DNA helix as an oligonucleotide. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase. Nucleotide excision repair recognizes a wide range of substrates, including damage caused by UV irradiation (pyrimidine dimers and 6-4 photoproducts) and chemicals (intrastrand cross-links and bulky adducts). |
| oligodendrocyte apoptotic process | Any apoptotic process in an oligodendrocyte. Oligodendrocytes belong to a class of large neuroglial (macroglial) cells in the central nervous system, where they form the insulating myelin sheath of axons. |
| positive regulation of apoptotic process | Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process. |
| positive regulation of intrinsic apoptotic signaling pathway | Any process that activates or increases the frequency, rate or extent of intrinsic apoptotic signaling pathway. |
| positive regulation of transcription by RNA polymerase II | Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter. |
| protein tetramerization | The formation of a protein tetramer, a macromolecular structure consisting of four noncovalently associated identical or nonidentical subunits. |
No homologous proteins in AiPD
| UniProt AC | Gene Name | Protein Name | Species | Evidence Code |
|---|---|---|---|---|
| No homologous proteins | ||||
| 10 | 20 | 30 | 40 | 50 | 60 |
| MEEPQSDPSI | EPPLSQETFS | DLWKLLPENN | VLSPLPSQAV | DDLMLSPDDL | AQWLTEDPGP |
| 70 | 80 | 90 | 100 | 110 | 120 |
| DEAPRMSEAA | PPMAPTPAAP | TPAAPAPAPS | WPLSSSVPSQ | KTYHGSYGFR | LGFLHSGTAK |
| 130 | 140 | 150 | 160 | 170 | 180 |
| SVTCTYSPDL | NKMFCQLAKT | CPVQLWVDST | PPPGSRVRAM | AIYKQSQHMT | EVVRRCPHHE |
| 190 | 200 | 210 | 220 | 230 | 240 |
| RCSDSDGLAP | PQHLIRVEGN | LRVEYSDDRN | TFRHSVVVPY | EPPEVGSDCT | TIHYNYMCNS |
| 250 | 260 | 270 | 280 | 290 | 300 |
| SCMGGMNRRP | ILTIITLEDS | SGNLLGRNSF | EVRVCACPGR | DRRTEEENFR | KKGEPCHQLP |
| 310 | 320 | 330 | 340 | 350 | 360 |
| PGSTKRALPN | NTSSSPQPKK | KPLDGEYFTL | QIRGRERFEM | FRELNEALEL | KDAQAGKEPA |
| 370 | 380 | 390 | |||
| GSRAHSSHLK | SKKGQSTSRH | KKFMFKTEGP | DSD |