The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Helix-loop-helix DNA-binding 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 5734: MYC associated factor X

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 21 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).
4 G5EEH5 (/IPI) P28574 (/IPI) P52164 (/IPI) P61244 (/IPI)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
3 G5EEH5 (/IPI) P52164 (/IPI) P91664 (/IPI)
Transcription factor activity, sequence-specific DNA binding GO:0003700
Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
2 P91664 (/IDA) Q18711 (/IDA)
RNA polymerase II core promoter proximal region sequence-specific DNA binding GO:0000978
Interacting selectively and non-covalently with a sequence of DNA that is in cis with and relatively close to a core promoter for RNA polymerase II.
1 B2RS19 (/IDA)
Transcription factor activity, RNA polymerase II core promoter sequence-specific GO:0000983
Interacting selectively and non-covalently with a specific DNA sequence in an RNA polymerase II (Pol II) core promoter, the region composed of the transcription start site and binding sites for transcription factors of the Pol II basal transcription machinery, in order to modulate transcription by Pol II. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
1 B2RS19 (/IDA)
RNA polymerase II regulatory region DNA binding GO:0001012
Interacting selectively and non-covalently with a DNA region that controls the transcription of a region of DNA by RNA polymerase II. Binding may occur as a sequence specific interaction or as an interaction observed only once a factor has been recruited to the DNA by other factors.
1 Q18711 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 P28574 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 P61244 (/IMP)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 P28574 (/ISO)
Transcription factor activity, sequence-specific DNA binding GO:0003700
Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
1 P52164 (/IMP)
Transcription factor activity, sequence-specific DNA binding GO:0003700
Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
1 P61244 (/TAS)
Transcription cofactor activity GO:0003712
Interacting selectively and non-covalently with a regulatory transcription factor and also with the basal transcription machinery in order to modulate transcription. Cofactors generally do not bind the template nucleic acid, but rather mediate protein-protein interactions between regulatory transcription factors and the basal transcription machinery.
1 P61244 (/TAS)
Transcription coactivator activity GO:0003713
Interacting selectively and non-covalently with a activating transcription factor and also with the basal transcription machinery in order to increase the frequency, rate or extent of transcription. Cofactors generally do not bind the template nucleic acid, but rather mediate protein-protein interactions between activating transcription factors and the basal transcription machinery.
1 P61244 (/TAS)
Protein domain specific binding GO:0019904
Interacting selectively and non-covalently with a specific domain of a protein.
1 G5EEH5 (/IPI)
Protein complex binding GO:0032403
Interacting selectively and non-covalently with any protein complex (a complex of two or more proteins that may include other nonprotein molecules).
1 P52164 (/IDA)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 P52164 (/IDA)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 P61244 (/IMP)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 P28574 (/ISO)
Sequence-specific DNA binding GO:0043565
Interacting selectively and non-covalently with DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding.
1 P52164 (/IDA)
E-box binding GO:0070888
Interacting selectively and non-covalently with an E-box, a DNA motif with the consensus sequence CANNTG that is found in the promoters of a wide array of genes expressed in neurons, muscle and other tissues.
1 P61244 (/IMP)
E-box binding GO:0070888
Interacting selectively and non-covalently with an E-box, a DNA motif with the consensus sequence CANNTG that is found in the promoters of a wide array of genes expressed in neurons, muscle and other tissues.
1 P28574 (/ISO)

There are 24 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
G1/S transition of mitotic cell cycle GO:0000082
The mitotic cell cycle transition by which a cell in G1 commits to S phase. The process begins with the build up of G1 cyclin-dependent kinase (G1 CDK), resulting in the activation of transcription of G1 cyclins. The process ends with the positive feedback of the G1 cyclins on the G1 CDK which commits the cell to S phase, in which DNA replication is initiated.
1 P61244 (/TAS)
Negative regulation of transcription from RNA polymerase II promoter GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription from an RNA polymerase II promoter.
1 P91664 (/IDA)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
1 P91664 (/IDA)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
1 P28574 (/IGI)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
1 P52164 (/IMP)
Regulation of transcription from RNA polymerase II promoter GO:0006357
Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter.
1 B2RS19 (/IDA)
Transcription from RNA polymerase II promoter GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II, originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
1 Q18711 (/IDA)
Transcription from RNA polymerase II promoter GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II, originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
1 P61244 (/TAS)
Protein complex assembly GO:0006461
The aggregation, arrangement and bonding together of a set of components to form a protein complex.
1 P52164 (/IDA)
Determination of adult lifespan GO:0008340
The control of viability and duration in the adult phase of the life-cycle.
1 G5EEH5 (/IGI)
Cellular response to starvation GO:0009267
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 deprivation of nourishment.
1 P52164 (/IEP)
Dorsal/ventral pattern formation GO:0009953
The regionalization process in which the areas along the dorsal/ventral axis are established that will lead to differences in cell differentiation. The dorsal/ventral axis is defined by a line that runs orthogonal to both the anterior/posterior and left/right axes. The dorsal end is defined by the upper or back side of an organism. The ventral end is defined by the lower or front side of an organism.
1 P52161 (/IDA)
Dorsal/ventral pattern formation GO:0009953
The regionalization process in which the areas along the dorsal/ventral axis are established that will lead to differences in cell differentiation. The dorsal/ventral axis is defined by a line that runs orthogonal to both the anterior/posterior and left/right axes. The dorsal end is defined by the upper or back side of an organism. The ventral end is defined by the lower or front side of an organism.
1 P52161 (/IMP)
Response to organonitrogen compound GO:0010243
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 organonitrogen stimulus. An organonitrogen compound is formally a compound containing at least one carbon-nitrogen bond.
1 P52164 (/IEP)
Negative regulation of gene expression GO:0010629
Any process that decreases 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 (for protein-coding genes) and the translation of that mRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
1 P52164 (/IDA)
Hemopoiesis GO:0030097
The process whose specific outcome is the progression of the myeloid and lymphoid derived organ/tissue systems of the blood and other parts of the body over time, from formation to the mature structure. The site of hemopoiesis is variable during development, but occurs primarily in bone marrow or kidney in many adult vertebrates.
1 P52161 (/IMP)
Response to insulin GO:0032868
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 insulin stimulus. Insulin is a polypeptide hormone produced by the islets of Langerhans of the pancreas in mammals, and by the homologous organs of other organisms.
1 P52164 (/IEP)
Determination of ventral identity GO:0048264
The regionalization process that results in the determination of the identity of part of an organism or organ where those parts are of the type that occur in the ventral region. Identity is considered to be the aggregate of characteristics by which a structure is recognized.
1 P52161 (/IGI)
Determination of ventral identity GO:0048264
The regionalization process that results in the determination of the identity of part of an organism or organ where those parts are of the type that occur in the ventral region. Identity is considered to be the aggregate of characteristics by which a structure is recognized.
1 P52161 (/IMP)
Response to axon injury GO:0048678
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 axon injury stimulus.
1 P52164 (/IEP)
Neuron apoptotic process GO:0051402
Any apoptotic process in a neuron, the basic cellular unit of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the nervous system.
1 P52164 (/IEP)
Retina development in camera-type eye GO:0060041
The process whose specific outcome is the progression of the retina over time, from its formation to the mature structure. The retina is the innermost layer or coating at the back of the eyeball, which is sensitive to light and in which the optic nerve terminates.
1 P52164 (/IEP)
Protein trimerization GO:0070206
The formation of a protein trimer, a macromolecular structure consisting of three noncovalently associated identical or nonidentical subunits.
1 P52161 (/IPI)
Cellular response to peptide hormone stimulus GO:0071375
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 peptide hormone stimulus. A peptide hormone is any of a class of peptides that are secreted into the blood stream and have endocrine functions in living animals.
1 P52164 (/IEP)

There are 14 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 G5EEH5 (/IDA) P28574 (/IDA) P52164 (/IDA) P61244 (/IDA) Q07016 (/IDA) Q18711 (/IDA)
MLL1 complex GO:0071339
A protein complex that can methylate lysine-4 of histone H3. MLL1/MLL is the catalytic methyltransferase subunit, and the complex also contains the core components ASH2L, HCFC1/HCF1 WDR5 and RBBP5.
6 P28574 (/ISS) P52161 (/ISS) P52162 (/ISS) P52164 (/ISS) P61245 (/ISS) Q07016 (/ISS)
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 P91664 (/IC)
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 P28574 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 P61244 (/TAS)
Transcription factor complex GO:0005667
A protein complex that is capable of associating with DNA by direct binding, or via other DNA-binding proteins or complexes, and regulating transcription.
1 G5EEH5 (/IPI)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P52164 (/IDA)
PML body GO:0016605
A class of nuclear body; they react against SP100 auto-antibodies (PML, promyelocytic leukemia); cells typically contain 10-30 PML bodies per nucleus; alterations in the localization of PML bodies occurs after viral infection.
1 P52164 (/IDA)
Dendrite GO:0030425
A neuron projection that has a short, tapering, often branched, morphology, receives and integrates signals from other neurons or from sensory stimuli, and conducts a nerve impulse towards the axon or the cell body. In most neurons, the impulse is conveyed from dendrites to axon via the cell body, but in some types of unipolar neuron, the impulse does not travel via the cell body.
1 P52164 (/IDA)
Protein-DNA complex GO:0032993
A macromolecular complex containing both protein and DNA molecules.
1 P61244 (/IMP)
Protein-DNA complex GO:0032993
A macromolecular complex containing both protein and DNA molecules.
1 P28574 (/ISO)
SMAD protein complex GO:0071141
A protein complex that consists of only SMAD proteins; may be homomeric or heteromeric.
1 P52161 (/IPI)
MLL1 complex GO:0071339
A protein complex that can methylate lysine-4 of histone H3. MLL1/MLL is the catalytic methyltransferase subunit, and the complex also contains the core components ASH2L, HCFC1/HCF1 WDR5 and RBBP5.
1 P61244 (/IDA)
MLL1 complex GO:0071339
A protein complex that can methylate lysine-4 of histone H3. MLL1/MLL is the catalytic methyltransferase subunit, and the complex also contains the core components ASH2L, HCFC1/HCF1 WDR5 and RBBP5.
1 P28574 (/ISO)