SMY2B_XENLA
ID SMY2B_XENLA Reviewed; 430 AA.
AC Q6GN68;
DT 08-MAR-2011, integrated into UniProtKB/Swiss-Prot.
DT 19-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 83.
DE RecName: Full=N-lysine methyltransferase SMYD2-B;
DE EC=2.1.1.- {ECO:0000250|UniProtKB:Q9NRG4};
DE AltName: Full=Histone methyltransferase SMYD2-B;
DE EC=2.1.1.354 {ECO:0000250|UniProtKB:Q9NRG4};
DE AltName: Full=SET and MYND domain-containing protein 2B;
GN Name=smyd2-b;
OS Xenopus laevis (African clawed frog).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Xenopus.
OX NCBI_TaxID=8355;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Embryo;
RG NIH - Xenopus Gene Collection (XGC) project;
RL Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP DEVELOPMENTAL STAGE.
RX PubMed=19003161; DOI=10.1007/s10616-008-9128-1;
RA Kawamura S., Yoshigai E., Kuhara S., Tashiro K.;
RT "smyd1 and smyd2 are expressed in muscle tissue in Xenopus laevis.";
RL Cytotechnology 57:161-168(2008).
CC -!- FUNCTION: Protein-lysine N-methyltransferase that methylates both
CC histones and non-histone proteins, including p53/TP53 and RB1.
CC Specifically trimethylates histone H3 'Lys-4' (H3K4me3) in vivo. The
CC activity requires interaction with HSP90alpha. Shows even higher
CC methyltransferase activity on p53/TP53. Monomethylates 'Lys-370' of
CC p53/TP53, leading to decreased DNA-binding activity and subsequent
CC transcriptional regulation activity of p53/TP53. Monomethylates RB1 at
CC 'Lys-860'. {ECO:0000250|UniProtKB:Q9NRG4}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-lysyl(4)-[histone H3] + 3 S-adenosyl-L-methionine = 3 H(+) +
CC N(6),N(6),N(6)-trimethyl-L-lysyl(4)-[histone H3] + 3 S-adenosyl-L-
CC homocysteine; Xref=Rhea:RHEA:60260, Rhea:RHEA-COMP:15537, Rhea:RHEA-
CC COMP:15547, ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:57856,
CC ChEBI:CHEBI:59789, ChEBI:CHEBI:61961; EC=2.1.1.354;
CC Evidence={ECO:0000250|UniProtKB:Q9NRG4};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-lysyl-[protein] + S-adenosyl-L-methionine = H(+) + N(6)-
CC methyl-L-lysyl-[protein] + S-adenosyl-L-homocysteine;
CC Xref=Rhea:RHEA:51736, Rhea:RHEA-COMP:9752, Rhea:RHEA-COMP:13053,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:57856,
CC ChEBI:CHEBI:59789, ChEBI:CHEBI:61929;
CC Evidence={ECO:0000250|UniProtKB:Q9NRG4};
CC -!- SUBCELLULAR LOCATION: Cytoplasm, cytosol {ECO:0000250}. Nucleus
CC {ECO:0000250}.
CC -!- DEVELOPMENTAL STAGE: Expressed from stage 2, indicating it is expressed
CC maternally. Expression is persistent through stage 40.
CC {ECO:0000269|PubMed:19003161}.
CC -!- SIMILARITY: Belongs to the class V-like SAM-binding methyltransferase
CC superfamily. {ECO:0000255|PROSITE-ProRule:PRU00190}.
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DR EMBL; BC073650; AAH73650.1; -; mRNA.
DR RefSeq; NP_001085986.1; NM_001092517.1.
DR AlphaFoldDB; Q6GN68; -.
DR SMR; Q6GN68; -.
DR MaxQB; Q6GN68; -.
DR DNASU; 444415; -.
DR GeneID; 444415; -.
DR KEGG; xla:444415; -.
DR CTD; 444415; -.
DR Xenbase; XB-GENE-17330768; smyd2.S.
DR OrthoDB; 981799at2759; -.
DR Proteomes; UP000186698; Chromosome 5S.
DR Bgee; 444415; Expressed in neurula embryo and 19 other tissues.
DR GO; GO:0005737; C:cytoplasm; ISS:UniProtKB.
DR GO; GO:0005829; C:cytosol; ISS:UniProtKB.
DR GO; GO:0005634; C:nucleus; ISS:UniProtKB.
DR GO; GO:0046975; F:histone methyltransferase activity (H3-K36 specific); ISS:UniProtKB.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016279; F:protein-lysine N-methyltransferase activity; ISS:UniProtKB.
DR GO; GO:0000993; F:RNA polymerase II complex binding; ISS:UniProtKB.
DR GO; GO:0006325; P:chromatin organization; IEA:UniProtKB-KW.
DR GO; GO:0034968; P:histone lysine methylation; IEA:InterPro.
DR GO; GO:0008285; P:negative regulation of cell population proliferation; ISS:UniProtKB.
DR GO; GO:0000122; P:negative regulation of transcription by RNA polymerase II; ISS:UniProtKB.
DR GO; GO:0018027; P:peptidyl-lysine dimethylation; ISS:UniProtKB.
DR GO; GO:0018026; P:peptidyl-lysine monomethylation; ISS:UniProtKB.
DR GO; GO:0043516; P:regulation of DNA damage response, signal transduction by p53 class mediator; ISS:UniProtKB.
DR CDD; cd19202; SET_SMYD2; 1.
DR Gene3D; 1.25.40.10; -; 1.
DR Gene3D; 2.170.270.10; -; 1.
DR InterPro; IPR001214; SET_dom.
DR InterPro; IPR046341; SET_dom_sf.
DR InterPro; IPR044419; SMYD2_SET.
DR InterPro; IPR011990; TPR-like_helical_dom_sf.
DR InterPro; IPR002893; Znf_MYND.
DR Pfam; PF00856; SET; 1.
DR Pfam; PF01753; zf-MYND; 1.
DR SMART; SM00317; SET; 1.
DR SUPFAM; SSF48452; SSF48452; 1.
DR SUPFAM; SSF82199; SSF82199; 1.
DR PROSITE; PS50280; SET; 1.
DR PROSITE; PS01360; ZF_MYND_1; 1.
DR PROSITE; PS50865; ZF_MYND_2; 1.
PE 2: Evidence at transcript level;
KW Chromatin regulator; Cytoplasm; Metal-binding; Methyltransferase; Nucleus;
KW Reference proteome; S-adenosyl-L-methionine; Transcription;
KW Transcription regulation; Transferase; Zinc; Zinc-finger.
FT CHAIN 1..430
FT /note="N-lysine methyltransferase SMYD2-B"
FT /id="PRO_0000405851"
FT DOMAIN 5..239
FT /note="SET"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00190"
FT ZN_FING 50..88
FT /note="MYND-type"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 15..17
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 50
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 53
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 63
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 66
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 72
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 76
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 84
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 88
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00134"
FT BINDING 135
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00190"
FT BINDING 204..205
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 256..258
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
SQ SEQUENCE 430 AA; 49119 MW; 43A35362BF585337 CRC64;
MGQPEGLERF DSPGKGRGLK ATRSFALGEL LFSCPAYTYV LTDNERGNHC DFCFTRKEGL
SKCGKCKQAF YCNVDCQKGD WPMHKLECSS MCSSGQNWCP SETVRLTARI LAKQKTQTER
TASERFMSVK EFESHLSKLD NEKKELIEND ISALHRFYSK NVHNCDNAAL EFLFAQVNCN
GFTIEDEELS HLGSAIFPDV ALMNHSCCPN VIVTYKGTVA EVRAVQEIHA GEEVFTSYID
LLYPTEDRND RLKDSYFFSC DCRECSTKQK DPAKLELRKL SDPPSPQTVR DMITYARNVV
EEFRRAKHYK TPSELLEICE LSLDKMGSVF VDSNVYMLHM MYQAMGVCLY MQDWEGALKY
GEKIIKPYSK HYPAYSLNVA SMWLKLGRLY MGLEKNTIGT KALKKALAIM EIAHGPDHYY
IAEIKKELEL
