The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
PWWP, helical domain
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 1: DNA (Cytosine-5)-methyltransferase 3B isoform X2

Please note: GO annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

There are 23 GO terms relating to "molecular function"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Protein binding GO:0005515
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
6 A0A0G2JYR2 (/IPI) O88509 (/IPI) Q1LZ51 (/IPI) Q9UBC3 (/IPI) Q9UBC3 (/IPI) Q9UBC3 (/IPI)
DNA (cytosine-5-)-methyltransferase activity GO:0003886
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.
4 O88509 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA)
DNA-binding transcription factor activity, RNA polymerase II-specific GO:0000981
A protein or a member of a complex that interacts selectively and non-covalently with a specific DNA sequence (sometimes referred to as a motif) within the regulatory region of a RNA polymerase II-transcribed gene to modulate transcription. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units.
3 Q9UBC3 (/ISA) Q9UBC3 (/ISA) Q9UBC3 (/ISA)
Transcription corepressor activity GO:0003714
A protein or a member of a complex that interacts specifically and non-covalently with a DNA-bound DNA-binding transcription factor to repress the transcription of specific genes. Corepressors often act by altering chromatin structure and modifications. For example, one class of transcription coregulators modifies chromatin structure through covalent modification of histones. A second ATP-dependent class modifies the conformation of chromatin. A third class occludes DNA-binding transcription factor protein-protein interaction domains. A fourth class of corepressors prevents interactions of DNA bound DNA-binding transcription factor with coactivators.
3 Q9UBC3 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA)
Transcription corepressor activity GO:0003714
A protein or a member of a complex that interacts specifically and non-covalently with a DNA-bound DNA-binding transcription factor to repress the transcription of specific genes. Corepressors often act by altering chromatin structure and modifications. For example, one class of transcription coregulators modifies chromatin structure through covalent modification of histones. A second ATP-dependent class modifies the conformation of chromatin. A third class occludes DNA-binding transcription factor protein-protein interaction domains. A fourth class of corepressors prevents interactions of DNA bound DNA-binding transcription factor with coactivators.
3 Q9UBC3 (/IMP) Q9UBC3 (/IMP) Q9UBC3 (/IMP)
DNA (cytosine-5-)-methyltransferase activity GO:0003886
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.
3 Q9UBC3 (/NAS) Q9UBC3 (/NAS) Q9UBC3 (/NAS)
DNA (cytosine-5-)-methyltransferase activity GO:0003886
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.
3 Q9UBC3 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS)
DNA-methyltransferase activity GO:0009008
Catalysis of the transfer of a methyl group to a DNA molecule.
3 Q9UBC3 (/NAS) Q9UBC3 (/NAS) Q9UBC3 (/NAS)
DNA-methyltransferase activity GO:0009008
Catalysis of the transfer of a methyl group to a DNA molecule.
3 Q9UBC3 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS)
Chromatin binding GO:0003682
Interacting selectively and non-covalently with chromatin, the network of fibers of DNA, protein, and sometimes RNA, that make up the chromosomes of the eukaryotic nucleus during interphase.
2 A0A0G2JYR2 (/IDA) Q1LZ51 (/IDA)
Histone deacetylase binding GO:0042826
Interacting selectively and non-covalently with the enzyme histone deacetylase.
2 A0A0G2JYR2 (/IPI) Q1LZ51 (/IPI)
DNA (cytosine-5-)-methyltransferase activity, acting on CpG substrates GO:0051718
Catalysis of the reaction: S-adenosyl-L-methionine + CpG (in DNA) = S-adenosyl-L-homocysteine + 5-MeCpG (in DNA).
2 O88509 (/IDA) P0DOY1 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 O88509 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 O88509 (/ISO)
Chromatin binding GO:0003682
Interacting selectively and non-covalently with chromatin, the network of fibers of DNA, protein, and sometimes RNA, that make up the chromosomes of the eukaryotic nucleus during interphase.
1 O88509 (/ISO)
Transcription corepressor activity GO:0003714
A protein or a member of a complex that interacts specifically and non-covalently with a DNA-bound DNA-binding transcription factor to repress the transcription of specific genes. Corepressors often act by altering chromatin structure and modifications. For example, one class of transcription coregulators modifies chromatin structure through covalent modification of histones. A second ATP-dependent class modifies the conformation of chromatin. A third class occludes DNA-binding transcription factor protein-protein interaction domains. A fourth class of corepressors prevents interactions of DNA bound DNA-binding transcription factor with coactivators.
1 O88509 (/ISO)
DNA (cytosine-5-)-methyltransferase activity GO:0003886
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.
1 O88509 (/IGI)
DNA (cytosine-5-)-methyltransferase activity GO:0003886
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.
1 P0DOY1 (/IMP)
DNA (cytosine-5-)-methyltransferase activity GO:0003886
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing cytosine = S-adenosyl-L-homocysteine + DNA containing 5-methylcytosine.
1 O88509 (/ISO)
Methyltransferase activity GO:0008168
Catalysis of the transfer of a methyl group to an acceptor molecule.
1 O88509 (/IDA)
Histone deacetylase binding GO:0042826
Interacting selectively and non-covalently with the enzyme histone deacetylase.
1 O88509 (/ISO)
DNA (cytosine-5-)-methyltransferase activity, acting on CpG substrates GO:0051718
Catalysis of the reaction: S-adenosyl-L-methionine + CpG (in DNA) = S-adenosyl-L-homocysteine + 5-MeCpG (in DNA).
1 P0DOY1 (/IMP)
DNA (cytosine-5-)-methyltransferase activity, acting on CpN substrates GO:0051719
Catalysis of the reaction: S-adenosyl-L-methionine + DNA containing CpN = S-adenosyl-L-homocysteine + DNA containing 5-MeCpN.
1 O88509 (/TAS)

There are 49 GO terms relating to "biological process"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Negative regulation of transcription by RNA polymerase II GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
3 Q9UBC3 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA)
DNA methylation GO:0006306
The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
3 Q9UBC3 (/NAS) Q9UBC3 (/NAS) Q9UBC3 (/NAS)
DNA methylation GO:0006306
The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
3 Q9UBC3 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS)
Determination of left/right symmetry GO:0007368
The establishment of an organism's body plan or part of an organism with respect to the left and right halves. The pattern can either be symmetric, such that the halves are mirror images, or asymmetric where the pattern deviates from this symmetry.
3 A0A2R8QML7 (/IGI) Q08CT6 (/IGI) Q588C6 (/IGI)
Determination of left/right symmetry GO:0007368
The establishment of an organism's body plan or part of an organism with respect to the left and right halves. The pattern can either be symmetric, such that the halves are mirror images, or asymmetric where the pattern deviates from this symmetry.
3 A0A2R8QML7 (/IMP) Q08CT6 (/IMP) Q588C6 (/IMP)
DNA methylation on cytosine within a CG sequence GO:0010424
The covalent transfer of a methyl group to C-5 or N-4 of a cytosine located within a CG sequence in a DNA molecule.
3 A0A2R8QML7 (/IMP) Q08CT6 (/IMP) Q588C6 (/IMP)
Positive regulation of gene expression GO:0010628
Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
3 Q9UBC3 (/IMP) Q9UBC3 (/IMP) Q9UBC3 (/IMP)
Negative regulation of gene expression, epigenetic GO:0045814
Any epigenetic process that stops, prevents or reduces the rate of gene expression.
3 Q9UBC3 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS)
Positive regulation of histone H3-K4 methylation GO:0051571
Any process that activates or increases the frequency, rate or extent of the covalent addition of a methyl group to the lysine at position 4 of histone H3.
3 Q9UBC3 (/IMP) Q9UBC3 (/IMP) Q9UBC3 (/IMP)
Negative regulation of histone H3-K9 methylation GO:0051573
Any process that stops, prevents, or reduces the frequency, rate or extent of the covalent addition of a methyl group to the lysine at position 9 of histone H3.
3 Q9UBC3 (/IMP) Q9UBC3 (/IMP) Q9UBC3 (/IMP)
Hematopoietic stem cell homeostasis GO:0061484
Any biological process involved in the maintenance of the steady-state number of hematopoietic stem cells within a population of cells.
3 A0A2R8QML7 (/IMP) Q08CT6 (/IMP) Q588C6 (/IMP)
Regulation of hematopoietic stem cell differentiation GO:1902036
Any process that modulates the frequency, rate or extent of hematopoietic stem cell differentiation.
3 A0A2R8QML7 (/IMP) Q08CT6 (/IMP) Q588C6 (/IMP)
Response to hypoxia GO:0001666
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 stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to toxic substance GO:0009636
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 toxic stimulus.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to ionizing radiation GO:0010212
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 ionizing radiation stimulus. Ionizing radiation is radiation with sufficient energy to remove electrons from atoms and may arise from spontaneous decay of unstable isotopes, resulting in alpha and beta particles and gamma rays. Ionizing radiation also includes X-rays.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to activity GO:0014823
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 an activity stimulus.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to caffeine GO:0031000
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 caffeine stimulus. Caffeine is an alkaloid found in numerous plant species, where it acts as a natural pesticide that paralyzes and kills certain insects feeding upon them.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to estradiol GO:0032355
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 stimulus by estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to vitamin A GO:0033189
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 vitamin A stimulus.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to cocaine GO:0042220
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 cocaine stimulus. Cocaine is a crystalline alkaloid obtained from the leaves of the coca plant.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Response to drug GO:0042493
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 drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Positive regulation of neuron differentiation GO:0045666
Any process that activates or increases the frequency, rate or extent of neuron differentiation.
2 A0A0G2JYR2 (/IMP) Q1LZ51 (/IMP)
Cellular response to hyperoxia GO:0071455
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating increased oxygen tension.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
Cellular response to dexamethasone stimulus GO:0071549
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a dexamethasone stimulus.
2 A0A0G2JYR2 (/IEP) Q1LZ51 (/IEP)
C-5 methylation of cytosine GO:0090116
The covalent transfer of a methyl group to C-5 of cytosine in a DNA molecule.
2 O88509 (/IDA) P0DOY1 (/IDA)
Negative regulation of transcription by RNA polymerase II GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
1 O88509 (/IMP)
Negative regulation of transcription by RNA polymerase II GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
1 O88509 (/ISO)
DNA methylation GO:0006306
The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
1 O88509 (/IGI)
DNA methylation GO:0006306
The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
1 O88509 (/IMP)
Methylation-dependent chromatin silencing GO:0006346
Repression of transcription by methylation of DNA, leading to the formation of heterochromatin.
1 O88509 (/IGI)
Regulation of gene expression by genetic imprinting GO:0006349
Heritable alterations in the activity of a gene that depend on whether it passed through the paternal or the maternal germline, but that are not encoded by DNA itself.
1 O88509 (/IMP)
Synapsis GO:0007129
The meiotic cell cycle process where side by side pairing and physical juxtaposition of homologous chromosomes is created during meiotic prophase. Synapsis begins when the chromosome arms begin to pair from the clustered telomeres and ends when synaptonemal complex or linear element assembly is complete.
1 P0DOY1 (/IMP)
Male meiosis I GO:0007141
A cell cycle process comprising the steps by which a cell progresses through male meiosis I, the first meiotic division in the male germline.
1 P0DOY1 (/IMP)
Spermatogenesis GO:0007283
The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
1 P0DOY1 (/IMP)
Negative regulation of transposition GO:0010529
Any process that decreases the frequency, rate or extent of transposition. Transposition results in the movement of discrete segments of DNA between nonhomologous sites.
1 P0DOY1 (/IMP)
Positive regulation of gene expression GO:0010628
Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
1 O88509 (/ISO)
Protein-containing complex localization GO:0031503
A localization process that acts on a protein complex; the complex is transported to, or maintained in, a specific location.
1 O88509 (/IDA)
DNA methylation on cytosine GO:0032776
The covalent transfer of a methyl group to C-5 or N-4 of cytosine in a DNA molecule.
1 P0DOY1 (/IMP)
DNA methylation involved in embryo development GO:0043045
The covalent transfer of a methyl group to C-5 of cytosine that contributes to the epigenetic regulation of embryonic gene expression.
1 O88509 (/IEP)
DNA methylation involved in embryo development GO:0043045
The covalent transfer of a methyl group to C-5 of cytosine that contributes to the epigenetic regulation of embryonic gene expression.
1 O88509 (/IGI)
DNA methylation involved in gamete generation GO:0043046
The covalent transfer of a methyl group to C-5 of cytosine that contributes to the establishment of DNA methylation patterns in the gamete.
1 P0DOY1 (/IMP)
Positive regulation of neuron differentiation GO:0045666
Any process that activates or increases the frequency, rate or extent of neuron differentiation.
1 O88509 (/ISO)
Negative regulation of gene expression, epigenetic GO:0045814
Any epigenetic process that stops, prevents or reduces the rate of gene expression.
1 O88509 (/IMP)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
1 O88509 (/ISO)
Positive regulation of histone H3-K4 methylation GO:0051571
Any process that activates or increases the frequency, rate or extent of the covalent addition of a methyl group to the lysine at position 4 of histone H3.
1 O88509 (/ISO)
Negative regulation of histone H3-K9 methylation GO:0051573
Any process that stops, prevents, or reduces the frequency, rate or extent of the covalent addition of a methyl group to the lysine at position 9 of histone H3.
1 O88509 (/ISO)
Inactivation of X chromosome by DNA methylation GO:0060821
Compensating for the two-fold variation in X-chromosome:autosome ratios between sexes by a global inactivation of all, or most of, the genes on one of the X-chromosomes in the XX sex by a mechanism of DNA methylation.
1 O88509 (/IMP)
Cellular response to amino acid stimulus GO:0071230
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an amino acid stimulus. An amino acid is a carboxylic acids containing one or more amino groups.
1 O88509 (/IDA)
C-5 methylation of cytosine GO:0090116
The covalent transfer of a methyl group to C-5 of cytosine in a DNA molecule.
1 P0DOY1 (/IMP)

There are 12 GO terms relating to "cellular component"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Nucleus GO:0005634
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.
6 A0A0G2JYR2 (/IDA) O88509 (/IDA) Q1LZ51 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
4 O88509 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS)
Nucleus GO:0005634
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.
3 Q9UBC3 (/TAS) Q9UBC3 (/TAS) Q9UBC3 (/TAS)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
3 Q9UBC3 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA)
Intracellular membrane-bounded organelle GO:0043231
Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
3 Q9UBC3 (/IDA) Q9UBC3 (/IDA) Q9UBC3 (/IDA)
Chromosome, centromeric region GO:0000775
The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
1 O88509 (/IDA)
Heterochromatin GO:0000792
A compact and highly condensed form of chromatin.
1 O88509 (/IDA)
Nucleus GO:0005634
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.
1 O88509 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 O88509 (/ISO)
Nuclear heterochromatin GO:0005720
A condensed form of chromatin, occurring in the nucleus during interphase, that stains strongly with basophilic dyes. The DNA of heterochromatin is typically replicated at a later stage in the cell-division cycle than euchromatin.
1 O88509 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 O88509 (/ISO)
Intracellular membrane-bounded organelle GO:0043231
Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
1 O88509 (/ISO)
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