Descriptions

SmyD2 belongs to a new class of chromatin regulators that control gene expression in heart development and tumorigenesis. Besides methylation of histone H3 K4, SmyD2 can methylate non-histone targets including p53. The methyltransferase activity of SmyD proteins has been proposed to be regulated by autoinhibition via the intra- and interdomain bending of the conserved C-terminal domain (CTD). The CTD stabilizes the autoinhibited conformation of SmyD2 and restricts access to the catalytic site.<br> In addition, the CTD is structurally similar to tetratricopeptide repeats (TPR), a motif through which many cochaperones bind to the heat shock protein Hsp90. The CTD may be important for the activation of SmyD proteins by Hsp90.

Autoinhibitory domains (AIDs)

Target domain

7-241 (SET domain)

Relief mechanism

Partner binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q0P585

Entry ID Method Resolution Chain Position Source
AF-Q0P585-F1 Predicted AlphaFoldDB

No variants for Q0P585

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q0P585

No associated diseases with Q0P585

3 regional properties for Q0P585

Type Name Position InterPro Accession
domain SET domain 7 - 247 IPR001214
domain Zinc finger, MYND-type 52 - 90 IPR002893
domain SMYD2, SET domain 7 - 269 IPR044419

Functions

Description
EC Number 2.1.1.354 Methyltransferases
Subcellular Localization
  • Cytoplasm, cytosol
  • Nucleus
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

3 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
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.

5 GO annotations of molecular function

Name Definition
histone H3K36 methyltransferase activity Catalysis of the reaction
histone H3K4 trimethyltransferase activity Catalysis of the reaction
metal ion binding Binding to a metal ion.
protein-lysine N-methyltransferase activity Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to the epsilon-amino group of a lysine residue in a protein substrate.
RNA polymerase II complex binding Binding to an RNA polymerase II core enzyme, a multisubunit eukaryotic nuclear RNA polymerase typically composed of twelve subunits.

5 GO annotations of biological process

Name Definition
negative regulation of cell population proliferation Any process that stops, prevents or reduces the rate or extent of cell proliferation.
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.
peptidyl-lysine dimethylation The methylation of peptidyl-lysine to form peptidyl-N6,N6-dimethyl-L-lysine.
peptidyl-lysine monomethylation The methylation of peptidyl-lysine to form peptidyl-N6-methyl-L-lysine.
regulation of DNA damage response, signal transduction by p53 class mediator Any process that modulates the frequency, rate or extent of the cascade of processes induced by the cell cycle regulator phosphoprotein p53, or an equivalent protein, in response to the detection of DNA damage.

13 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q5ZIZ2 SMYD5 Histone-lysine N-trimethyltransferase SMYD5 Gallus gallus (Chicken) PR
E1C5V0 SMYD2 N-lysine methyltransferase SMYD2 Gallus gallus (Chicken) SS
Q6GMV2 SMYD5 Histone-lysine N-trimethyltransferase SMYD5 Homo sapiens (Human) PR
Q9H7B4 SMYD3 Histone-lysine N-methyltransferase SMYD3 Homo sapiens (Human) EV
Q9NRG4 SMYD2 N-lysine methyltransferase SMYD2 Homo sapiens (Human) SS
Q3TYX3 Smyd5 Histone-lysine N-trimethyltransferase SMYD5 Mus musculus (Mouse) PR
Q8R5A0 Smyd2 N-lysine methyltransferase SMYD2 Mus musculus (Mouse) EV
Q9CWR2 Smyd3 Histone-lysine N-methyltransferase SMYD3 Mus musculus (Mouse) SS
C3RZA1 SMYD2 N-lysine methyltransferase SMYD2 Sus scrofa (Pig) SS
Q7M6Z3 Smyd2 N-lysine methyltransferase SMYD2 Rattus norvegicus (Rat) SS
P34318 set-3 SET domain-containing protein 3 Caenorhabditis elegans PR
Q5RGL7 smyd2b N-lysine methyltransferase SMYD2-B Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q5BJI7 smyd2a N-lysine methyltransferase SMYD2-A Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MRAEGDGGLE RFCSPGKGRG LRALQPFQVG DLLFSCPAYA YVLTVSERGN HCEFCFARKE
70 80 90 100 110 120
GLSKCGRCKQ AFYCNVECQR EDWPMHKLEC SPMVVFGENW NPSETVRLTA RILAKQKIHP
130 140 150 160 170 180
ERTPSEKLLA VKEFESHLDK LDNEKRDLIQ SDIAALHHFY SKHLEFPDND SLVVLFAQVN
190 200 210 220 230 240
CNGFTIEDEE LSHLGSAIFP DVALMNHSCC PNVIVTYKGT LAEVRAVQEI HPGEEVFTSY
250 260 270 280 290 300
IDLLYPTEDR NDRLRDSYFF TCECQECTTK DKDKAKVEIR KLNDPPKAET IRDMVRYARN
310 320 330 340 350 360
VIEEFRRAKH YKSPSELLEI CELSQEKMSC VFEDSNVYML HMMYQAMGVC LYMQDWEGAL
370 380 390 400 410 420
RYGQKIIQPY SKHYPLYSLN VASMWLKLGR LYMGLENKAA GERALKKAIA IMEVAHGKDH
430
PYISEIKQEI ESH