UniProt ID: T1ECS2 |
FUNCTION: Protein-lysine N-methyltransferase that methylates both histones and non-histone proteins, including p53/TP53 and RB1. Specifically trimethylates histone H3 'Lys-4' (H3K4me3) in vivo. The activity requires interaction with HSP90alpha. Shows even higher methyltransferase activity on p53/TP53. Monomethylates 'Lys-370' of p53/TP53, leading to decreased DNA-binding activity and subsequent transcriptional regulation activity of p53/TP53. Monomethylates RB1 at 'Lys-860'. {ECO:0000256|ARBA:ARBA00024002}. CATALYTIC ACTIVITY: Reaction=L-lysyl(4)-[histone H3] + 3 S-adenosyl-L-methionine = 3 H(+) + N(6),N(6),N(6)-trimethyl-L-lysyl(4)-[histone H3] + 3 S-adenosyl-L- homocysteine; Xref=Rhea:RHEA:60260, Rhea:RHEA-COMP:15537, Rhea:RHEA- COMP:15547, ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:61961; EC=2.1.1.354; Evidence={ECO:0000256|ARBA:ARBA00000944}; CATALYTIC ACTIVITY: Reaction=L-lysyl-[protein] + S-adenosyl-L-methionine = H(+) + N(6)- methyl-L-lysyl-[protein] + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:51736, Rhea:RHEA-COMP:9752, Rhea:RHEA-COMP:13053, ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:61929; Evidence={ECO:0000256|ARBA:ARBA00000587}; SUBCELLULAR LOCATION: Cytoplasm, cytosol {ECO:0000256|ARBA:ARBA00004514}. Nucleus {ECO:0000256|ARBA:ARBA00004123}. |
UniProt ID: Q5RGL7 |
FUNCTION: Protein-lysine N-methyltransferase that methylates both histones and non-histone proteins, including p53/TP53 and RB1. Specifically trimethylates histone H3 'Lys-4' (H3K4me3) in vivo. The activity requires interaction with HSP90alpha. Shows even higher methyltransferase activity on p53/TP53. Monomethylates 'Lys-370' of p53/TP53, leading to decreased DNA-binding activity and subsequent transcriptional regulation activity of p53/TP53. Monomethylates RB1 at 'Lys-860'. {ECO:0000250|UniProtKB:Q9NRG4}. CATALYTIC ACTIVITY: Reaction=L-lysyl(4)-[histone H3] + 3 S-adenosyl-L-methionine = 3 H(+) + N(6),N(6),N(6)-trimethyl-L-lysyl(4)-[histone H3] + 3 S-adenosyl-L- homocysteine; Xref=Rhea:RHEA:60260, Rhea:RHEA-COMP:15537, Rhea:RHEA- COMP:15547, ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:61961; EC=2.1.1.354; Evidence={ECO:0000269|PubMed:16477022}; CATALYTIC ACTIVITY: Reaction=L-lysyl-[protein] + S-adenosyl-L-methionine = H(+) + N(6)- methyl-L-lysyl-[protein] + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:51736, Rhea:RHEA-COMP:9752, Rhea:RHEA-COMP:13053, ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:61929; Evidence={ECO:0000250|UniProtKB:Q9NRG4}; SUBCELLULAR LOCATION: Cytoplasm, cytosol {ECO:0000250}. Nucleus {ECO:0000250}. SIMILARITY: Belongs to the class V-like SAM-binding methyltransferase superfamily. {ECO:0000255|PROSITE-ProRule:PRU00190}. SEQUENCE CAUTION: Sequence=CAI20605.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305}; |
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