Descriptions

The histone-lysine N-methyltransferase EZH2 (EZH2) is a catalytic subunit of the polycomb repressive complex 2 (PRC2) and is involved in histone methylation and transcriptional repression. Autoinhibition of EZH2 is achieved through the C-terminus folding back into the active site, effectively blocking substrate engagement. This conformational state is inactive, preventing enzymatic activity and ensuring EZH2 only functions when properly complexed, preventing aberrant methylation activity. The inhibited activity of EZH2 could be alleviated by interactions with its binding partners EED and SUZ12, which could induce a conformational change in EZH2

Autoinhibitory domains (AIDs)

Target domain

647-732 (Active sites of SET domain)

Relief mechanism

Partner binding, Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for P70351

Entry ID Method Resolution Chain Position Source
AF-P70351-F1 Predicted AlphaFoldDB

44 variants for P70351

Variant ID(s) Position Change Description Diseaes Association Provenance
rs3389207391 17 R>G No EVA
rs864289240 20 K>R No EVA
rs3389204810 26 L>I No EVA
rs3389204459 44 A>G No EVA
rs3389214061 44 A>S No EVA
rs3402796886 69 Q>H No EVA
rs233057293 70 P>Q No EVA
rs3389167018 72 K>R No EVA
rs3389167015 76 G>R No EVA
rs3412794619 78 P>L No EVA
rs3402697677 80 L>Q No EVA
rs3389197099 86 E>* No EVA
rs3411775326 112 Y>H No EVA
rs3411897523 115 S>F No EVA
rs3389200546 119 Q>E No EVA
rs3389204819 147 I>F No EVA
rs3389175312 164 M>I No EVA
rs3389207152 168 S>T No EVA
rs3389207135 175 V>M No EVA
rs3389197064 223 N>K No EVA
rs3389214042 247 N>D No EVA
rs3389200537 314 A>T No EVA
rs3389203551 339 L>F No EVA
rs3389204865 339 L>P No EVA
rs3389204432 379 A>P No EVA
rs3549198595 380 M>V No EVA
rs3389207160 383 T>I No EVA
rs3389178974 392 T>I No EVA
rs3389200503 424 V>A No EVA
rs3389140972 439 E>G No EVA
rs3412877936 464 T>S No EVA
rs3389178231 504 C>S No EVA
rs3389218264 514 N>I No EVA
rs3389175280 541 Q>* No EVA
rs3389200494 556 N>K No EVA
rs3389207140 558 F>C No EVA
rs864265510 575 Y>H No EVA
rs3389178200 580 E>D No EVA
rs3389141026 608 Q>R No EVA
rs3389167045 609 R>G No EVA
rs235053911 631 E>D No EVA
rs3389197091 673 D>E No EVA
rs3389205755 724 F>L No EVA
rs3402073537 741 E>K No EVA

No associated diseases with P70351

9 regional properties for P70351

Type Name Position InterPro Accession
domain SANT/Myb domain 135 - 263 IPR001005-1
domain SANT/Myb domain 430 - 478 IPR001005-2
domain SET domain 613 - 734 IPR001214
domain CXC domain 504 - 606 IPR026489
domain Tesmin/TSO1-like CXC domain 556 - 593 IPR033467
domain Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain 159 - 262 IPR041343
domain Pre-SET CXC domain 560 - 591 IPR041355
domain EZH1, SET domain 608 - 743 IPR044438
domain EZH1/2, MCSS domain 270 - 322 IPR048358

Functions

Description
EC Number 2.1.1.356 Methyltransferases
Subcellular Localization
  • Nucleus
  • Colocalizes with trimethylated 'Lys-27' of histone H3
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

4 GO annotations of cellular component

Name Definition
chromosome, telomeric region The end of a linear chromosome, required for the integrity and maintenance of the end. A chromosome telomere usually includes a region of telomerase-encoded repeats the length of which rarely exceeds 20 bp each and that permits the formation of a telomeric loop (T-loop). The telomeric repeat region is usually preceded by a sub-telomeric region that is gene-poor but rich in repetitive elements. Some telomeres only consist of the latter part (for eg. D. melanogaster telomeres).
ESC/E(Z) complex A multimeric protein complex that can methylate lysine-27 and lysine-9 residues of histone H3. In Drosophila the core subunits of the complex include ESC, E(Z), CAF1 (NURF-55) and SU(Z)12. In mammals the core subunits of the complex include EED, EZH2, SUZ12 and RBBP4.
heterochromatin A compact and highly condensed form of chromatin that is refractory to transcription.
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.

4 GO annotations of molecular function

Name Definition
chromatin binding Binding to chromatin, the network of fibers of DNA, protein, and sometimes RNA, that make up the chromosomes of the eukaryotic nucleus during interphase.
histone H3K27 methyltransferase activity Catalysis of the reaction
histone H3K27 trimethyltransferase activity Catalysis of the reaction
transcription corepressor activity A transcription coregulator activity that represses or decreases the transcription of specific gene sets via binding to a DNA-bound DNA-binding transcription factor, either on its own or as part of a complex. Corepressors often act by altering chromatin structure and modifications. For example, one class of transcription corepressors modifies chromatin structure through covalent modification of histones. A second class remodels the conformation of chromatin in an ATP-dependent fashion. A third class modulates interactions of DNA-bound DNA-binding transcription factors with other transcription coregulators.

10 GO annotations of biological process

Name Definition
chromatin remodeling A dynamic process of chromatin reorganization resulting in changes to chromatin structure. These changes allow DNA metabolic processes such as transcriptional regulation, DNA recombination, DNA repair, and DNA replication.
facultative heterochromatin formation The compaction of chromatin into a conformation that is refactory to transcription but that be converted to euchromatin and allow transcription in specific contexts. These can be temporal (e.g., developmental states or specific cell-cycle stages), spatial (e.g., nuclear localization changes from the center to the periphery or vice versa due to exogenous factors/signals), or parental/heritable (e.g., monoallelic gene expression).
hepatocyte homeostasis Any biological process involved in the maintenance of the steady-state number of hepatocytes within a population of cells. Hepatocytes are specialized epithelial cells of the liver that are organized into interconnected plates called lobules.
heterochromatin formation An epigenetic gene silencing mechanism in which chromatin is compacted into heterochromatin, resulting in a chromatin conformation refractory to transcription. This process starts with heterochromatin nucleation, its spreading, and ends with heterochromatin boundary formation.
liver regeneration The regrowth of lost or destroyed liver.
methylation The process in which a methyl group is covalently attached to a molecule.
negative regulation of transcription by RNA polymerase II Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
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.
response to tetrachloromethane Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a tetrachloromethane stimulus.
subtelomeric heterochromatin formation The compaction of chromatin into heterochromatin at the subtelomeric region.

8 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
A7E2Z2 EZH1 Histone-lysine N-methyltransferase EZH1 Bos taurus (Bovine) SS
P42124 E(z) Histone-lysine N-methyltransferase E Drosophila melanogaster (Fruit fly) SS
Q15910 EZH2 Histone-lysine N-methyltransferase EZH2 Homo sapiens (Human) EV
Q92800 EZH1 Histone-lysine N-methyltransferase EZH1 Homo sapiens (Human) SS
Q61188 Ezh2 Histone-lysine N-methyltransferase EZH2 Mus musculus (Mouse) SS
O65312 MEA Histone-lysine N-methyltransferase MEDEA Arabidopsis thaliana (Mouse-ear cress) PR
Q28D84 ezh2 Histone-lysine N-methyltransferase EZH2 Xenopus tropicalis (Western clawed frog) (Silurana tropicalis) SS
Q08BS4 ezh2 Histone-lysine N-methyltransferase EZH2 Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MDIASPPTSK CITYWKRKVK SEYMRLRQLK RLQANMGAKA LYVANFAKVQ EKTQILNEEW
70 80 90 100 110 120
KKLRVQPVQP MKPVSGHPFL KKCTIESIFP GFDSQDMLMR SLNTVALVPI MYSWSPLQQN
130 140 150 160 170 180
FMVEDETVLC NIPYMGDEVK EEDETFIEEL INNYDGKVHG EEEMIPGSVL ISDAVFLELV
190 200 210 220 230 240
DALNQYSDEE EDGHNDPSDG KQDDSKEDLP VTRKRKRHAI EGNKKSSKKQ FPNDMIFSAI
250 260 270 280 290 300
ASMFPENGVP DDMKERYREL TEMSDPNALP PQCTPNIDGP NAKSVQREQS LHSFHTLFCR
310 320 330 340 350 360
RCFKYDCFLH PFHATPNVYK RKNKEIKIEP EPCGTDCFLL LEGAKEYAML HNPRSKCSGR
370 380 390 400 410 420
RRRRHPVVSA SCSNASASAM AETKEGDSDR DTGNDWASSS SEANSRCQTP TKQKASPAPA
430 440 450 460 470 480
QLCVVEAPSE PVEWTGAEES LFRVFHGTYF NNFCSIARLL GTKTCKQVFQ FAVKESLILK
490 500 510 520 530 540
LPTDELMNPA QKKKRKHRLW AAHCRKIQLK KDNNSTQVYN YQPCDHPDRP CDSTCPCIMT
550 560 570 580 590 600
QNFCEKFCQC SPDCQNRFPG CRCKTQCNTK QCPCYLAVRE CDPDLCLTCG ASEHWDCKVV
610 620 630 640 650 660
SCKNCSIQRG LKKHLLLAPS DVAGWGTFIK ESVQKNEFIS EYCGELISQD EADRRGKVYD
670 680 690 700 710 720
KYMSSFLFNL NNDFVVDATR KGNKIRFANH SVNPNCYAKV VMVNGDHRIG IFAKRAIQAG
730 740
EELFFDYRYS QADALKYVGI ERETDVF