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histone H4R3 methyltransferase activity

Definition

Target type: molecularfunction

Catalysis of the reaction: S-adenosyl-L-methionine + (histone H4)-arginine (position 3) = S-adenosyl-L-homocysteine + (histone H4)-N-methyl-arginine (position 3). This reaction is the addition of a methyl group to the arginine residue at position 3 of histone H4, producing histone H4R3me. [GOC:mah, PMID:17898714]

Histone H4R3 methyltransferase activity is a crucial enzyme activity involved in the epigenetic regulation of gene expression. It catalyzes the transfer of a methyl group from a donor molecule, typically S-adenosyl methionine (SAM), to the arginine residue at position 3 (R3) of histone H4. This methylation event specifically targets the N-terminal tail of histone H4, a highly dynamic region that protrudes from the nucleosome core. The addition of a methyl group to histone H4R3 can have significant downstream effects on chromatin structure and gene regulation. It can influence the accessibility of DNA to transcription factors and other regulatory proteins, ultimately affecting the level of gene expression. The specific impact of histone H4R3 methylation on gene expression can vary depending on the cellular context and the presence of other histone modifications. For example, methylation of histone H4R3 has been linked to both gene activation and repression, suggesting its role in a complex interplay of regulatory mechanisms. The activity of histone H4R3 methyltransferases is tightly regulated by a variety of factors, including cellular signaling pathways, developmental cues, and environmental stressors. These enzymes are often targeted by specific inhibitors, which can be used to study their role in disease processes. Overall, histone H4R3 methyltransferase activity plays a fundamental role in shaping the epigenome and controlling gene expression, with implications for diverse cellular processes and human health.'
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Proteins (4)

ProteinDefinitionTaxonomy
Protein arginine N-methyltransferase 7A protein arginine N-methyltransferase 7 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9NVM4]Homo sapiens (human)
Protein arginine N-methyltransferase 1A protein arginine N-methyltransferase 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q99873]Homo sapiens (human)
Protein arginine N-methyltransferase 6A protein arginine N-methyltransferase 6 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q96LA8]Homo sapiens (human)
Protein arginine N-methyltransferase 5A protein arginine N-methyltransferase 5 that is encoded in the genome of human. [PRO:DNx, UniProtKB:O14744]Homo sapiens (human)

Compounds (23)

CompoundDefinitionClassesRoles
fluorescitefluorescein (acid form) : A xanthene dye that is highly fluorescent and commonly used as a fluorescent tracer.benzoic acids;
cyclic ketone;
hydroxy monocarboxylic acid;
organic heterotricyclic compound;
phenols;
xanthene dye
fluorescent dye;
radioopaque medium
pentamidinepentamidine : A diether consisting of pentane-1,5-diol in which both hydroxyl hydrogens have been replaced by 4-amidinophenyl groups. A trypanocidal drug that is used for treatment of cutaneous leishmaniasis and Chagas disease.

Pentamidine: Antiprotozoal agent effective in trypanosomiasis, leishmaniasis, and some fungal infections; used in treatment of PNEUMOCYSTIS pneumonia in HIV-infected patients. It may cause diabetes mellitus, central nervous system damage, and other toxic effects.
aromatic ether;
carboxamidine;
diether
anti-inflammatory agent;
antifungal agent;
calmodulin antagonist;
chemokine receptor 5 antagonist;
EC 2.3.1.48 (histone acetyltransferase) inhibitor;
NMDA receptor antagonist;
S100 calcium-binding protein B inhibitor;
trypanocidal drug;
xenobiotic
saccharinsaccharin : A 1,2-benzisothiazole having a keto-group at the 3-position and two oxo substituents at the 1-position. It is used as an artificial sweetening agent.

Saccharin: Flavoring agent and non-nutritive sweetener.
1,2-benzisothiazole;
N-sulfonylcarboxamide
environmental contaminant;
sweetening agent;
xenobiotic
sulfathiazolesulfathiazole : A 1,3-thiazole compound having a 4-aminobenzenesulfonamido group at the 2-position.

Sulfathiazole: A sulfathiazole compound that is used as a short-acting anti-infective agent. It is no longer commonly used systemically due to its toxicity, but may still be applied topically in combination with other drugs for the treatment of vaginal and skin infections, and is still used in veterinary medicine.
1,3-thiazoles;
substituted aniline;
sulfonamide;
sulfonamide antibiotic
antiinfective agent;
drug allergen;
EC 2.5.1.15 (dihydropteroate synthase) inhibitor;
environmental contaminant;
xenobiotic
suraminsuramin : A member of the class of phenylureas that is urea in which each of the amino groups has been substituted by a 3-({2-methyl-5-[(4,6,8-trisulfo-1-naphthyl)carbamoyl]phenyl}carbamoyl)phenyl group. An activator of both the rabbit skeletal muscle RyR1 and sheep cardiac RyR2 isoform ryanodine receptor channels, it has been used for the treatment of human African trypanosomiasis for over 100 years.

Suramin: A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of African trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult Onchocerca. (From AMA Drug Evaluations Annual, 1992, p1643) It has also been shown to have potent antineoplastic properties.
naphthalenesulfonic acid;
phenylureas;
secondary carboxamide
angiogenesis inhibitor;
antinematodal drug;
antineoplastic agent;
apoptosis inhibitor;
EC 2.7.11.13 (protein kinase C) inhibitor;
GABA antagonist;
GABA-gated chloride channel antagonist;
purinergic receptor P2 antagonist;
ryanodine receptor agonist;
trypanocidal drug
alizarindihydroxyanthraquinonechromophore;
dye;
plant metabolite
7-amino-4-hydroxy-2-naphthalenesulfonic acid7-amino-4-hydroxy-2-naphthalenesulfonic acid : An aminonaphthalenesulfonic acid that is 2-naphthalenesulfonic acid substituted by an amino group at position 7 and a hydroxy group at position 4 respectively.

7-amino-4-hydroxy-2-naphthalenesulfonic acid: structure given in first source
aminonaphthalenesulfonic acid;
naphthols
metabolite
1-naphthol-8-amino-3,6-disulfonic acid1-naphthol-8-amino-3,6-disulfonic acid: dye and found in industrial waste
methyl redmethyl red : An azo dye consisting of benzoic acid substituted at position 2 by a 4-[(dimethylamino)phenyl]diazenyl group.

methyl red: RN given refers to parent cpd; structure
s-adenosylmethionineacylcarnitine: structure in first source

S-adenosyl-L-methioninate : A sulfonium betaine that is a conjugate base of S-adenosyl-L-methionine obtained by the deprotonation of the carboxy group.
sulfonium betainehuman metabolite
hexamidinehexamidine : A polyether that is the bis(4-guanidinophenyl) ether of hexane-1,6-diol.aromatic ether;
guanidines;
polyether
antimicrobial agent;
antiseptic drug
sinefunginadenosines;
non-proteinogenic alpha-amino acid
antifungal agent;
antimicrobial agent
fluorone blackfluorone Black: structure
c.i. direct red 23C.I. Direct Red 23: azo dye; structure in first source
furamidinefuramidine: RN given refers to parent cpd; WR 199385 refers to di-HCl; pafuramidine is a prodrug of this
s-adenosylhomocysteineS-adenosyl-L-homocysteine : An organic sulfide that is the S-adenosyl derivative of L-homocysteine.

S-Adenosylhomocysteine: 5'-S-(3-Amino-3-carboxypropyl)-5'-thioadenosine. Formed from S-adenosylmethionine after transmethylation reactions.
adenosines;
amino acid zwitterion;
homocysteine derivative;
homocysteines;
organic sulfide
cofactor;
EC 2.1.1.72 [site-specific DNA-methyltransferase (adenine-specific)] inhibitor;
EC 2.1.1.79 (cyclopropane-fatty-acyl-phospholipid synthase) inhibitor;
epitope;
fundamental metabolite
5'-methylthioadenosine5'-methylthioadenosine: structure

5'-S-methyl-5'-thioadenosine : Adenosine with the hydroxy group at C-5' substituted with a methylthio (methylsulfanyl) group.
thioadenosinealgal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite
stilbamidinestilbamidine: RN given refers to parent cpd
mbx 1090
epz004777N-glycosyl compound
gsk343GSK343 : A member of the class of indazoles that is 1-isopropyl-1H-indazole-4-carboxamide in which the nitrogen of the carboxamide group is substituted by a (6-methyl-2-oxo-4-propyl-1,2-dihydropyridin-3-yl)methyl group and in which the indazole ring is substituted at position 6 by a 2-(4-methylpiperazin-1-yl)pyridin-4-yl group. A highly potent and selective EZH2 inhibitor (IC50 = 4 nM).

GSK343: an EZH2 methyltransferase inhibitor
aminopyridine;
indazoles;
N-alkylpiperazine;
N-arylpiperazine;
pyridone;
secondary carboxamide
antineoplastic agent;
apoptosis inducer;
EC 2.1.1.43 (enhancer of zeste homolog 2) inhibitor
6,7-dimethoxy-2-(pyrrolidin-1-yl)-n-(5-(pyrrolidin-1-yl)pentyl)quinazolin-4-amine6,7-dimethoxy-2-(pyrrolidin-1-yl)-N-(5-(pyrrolidin-1-yl)pentyl)quinazolin-4-amine: a SETD8 inhibitor; structure in first source
gsk3235025GSK3235025: an inhibitor of protein arginine methyltransferase-5 (PRMT5); structure in first source