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:

"
DnaJ 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 14639: DnaJ homolog subfamily B member 4

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).
7 O35723 (/IPI) O75953 (/IPI) O89114 (/IPI) P25491 (/IPI) P25685 (/IPI) P59910 (/IPI) Q9UDY4 (/IPI)
ATPase activator activity GO:0001671
Binds to and increases the ATP hydrolysis activity of an ATPase.
5 Q2KIT4 (/ISS) Q3MI00 (/ISS) Q5R8J8 (/ISS) Q9D832 (/ISS) Q9QYJ3 (/ISS)
ATPase activator activity GO:0001671
Binds to and increases the ATP hydrolysis activity of an ATPase.
3 P25491 (/IDA) P25685 (/IDA) Q9UDY4 (/IDA)
Chaperone binding GO:0051087
Interacting selectively and non-covalently with a chaperone protein, a class of proteins that bind to nascent or unfolded polypeptides and ensure correct folding or transport.
3 O75953 (/IPI) P25685 (/IPI) Q9UDY4 (/IPI)
Chaperone binding GO:0051087
Interacting selectively and non-covalently with a chaperone protein, a class of proteins that bind to nascent or unfolded polypeptides and ensure correct folding or transport.
3 O89114 (/ISO) Q9D832 (/ISO) Q9QYJ3 (/ISO)
RNA polymerase II transcription corepressor activity GO:0001106
Interacting selectively and non-covalently with an RNA polymerase II repressing transcription factor and also with the RNA polymerase II basal transcription machinery in order to stop, prevent, or reduce the frequency, rate or extent of transcription. Cofactors generally do not bind DNA, but rather mediate protein-protein interactions between repressive transcription factors and the basal transcription machinery.
2 Q3MI00 (/ISS) Q9QYJ3 (/ISS)
ATPase activator activity GO:0001671
Binds to and increases the ATP hydrolysis activity of an ATPase.
2 Q9D832 (/ISO) Q9QYJ3 (/ISO)
Unfolded protein binding GO:0051082
Interacting selectively and non-covalently with an unfolded protein.
2 P25491 (/IDA) P25685 (/IDA)
Unfolded protein binding GO:0051082
Interacting selectively and non-covalently with an unfolded protein.
2 P87239 (/ISO) Q9QYJ3 (/ISO)
RNA polymerase II transcription corepressor activity GO:0001106
Interacting selectively and non-covalently with an RNA polymerase II repressing transcription factor and also with the RNA polymerase II basal transcription machinery in order to stop, prevent, or reduce the frequency, rate or extent of transcription. Cofactors generally do not bind DNA, but rather mediate protein-protein interactions between repressive transcription factors and the basal transcription machinery.
1 P25685 (/IDA)
RNA polymerase II transcription corepressor activity GO:0001106
Interacting selectively and non-covalently with an RNA polymerase II repressing transcription factor and also with the RNA polymerase II basal transcription machinery in order to stop, prevent, or reduce the frequency, rate or extent of transcription. Cofactors generally do not bind DNA, but rather mediate protein-protein interactions between repressive transcription factors and the basal transcription machinery.
1 Q9QYJ3 (/ISO)
ATPase activator activity GO:0001671
Binds to and increases the ATP hydrolysis activity of an ATPase.
1 P25685 (/TAS)
Hsp70 protein binding GO:0030544
Interacting selectively and non-covalently with Hsp70 proteins, any of a group of heat shock proteins around 70kDa in size.
1 P25685 (/IPI)
Hsp70 protein binding GO:0030544
Interacting selectively and non-covalently with Hsp70 proteins, any of a group of heat shock proteins around 70kDa in size.
1 P87239 (/ISM)
Hsp70 protein binding GO:0030544
Interacting selectively and non-covalently with Hsp70 proteins, any of a group of heat shock proteins around 70kDa in size.
1 Q9QYJ3 (/ISO)
Cadherin binding GO:0045296
Interacting selectively and non-covalently with cadherin, a type I membrane protein involved in cell adhesion.
1 P25685 (/IDA)
Cadherin binding GO:0045296
Interacting selectively and non-covalently with cadherin, a type I membrane protein involved in cell adhesion.
1 Q9QYJ3 (/ISO)
Unfolded protein binding GO:0051082
Interacting selectively and non-covalently with an unfolded protein.
1 O89114 (/ISS)
Unfolded protein binding GO:0051082
Interacting selectively and non-covalently with an unfolded protein.
1 Q9UDY4 (/TAS)
Chaperone binding GO:0051087
Interacting selectively and non-covalently with a chaperone protein, a class of proteins that bind to nascent or unfolded polypeptides and ensure correct folding or transport.
1 P25303 (/IMP)
Chaperone binding GO:0051087
Interacting selectively and non-covalently with a chaperone protein, a class of proteins that bind to nascent or unfolded polypeptides and ensure correct folding or transport.
1 P25303 (/ISS)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
1 P25685 (/IPI)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
1 Q9QYJ3 (/ISO)

There are 34 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
Lens development in camera-type eye GO:0002088
The process whose specific outcome is the progression of the lens over time, from its formation to the mature structure. The lens is a transparent structure in the eye through which light is focused onto the retina. An example of this process is found in Mus musculus.
4 A0A0R4IYH3 (/IMP) B8JM56 (/IMP) Q6DEJ4 (/IMP) Q7ZVY8 (/IMP)
Response to unfolded protein GO:0006986
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 unfolded protein stimulus.
2 P25685 (/TAS) Q9UDY4 (/TAS)
Ubiquitin-dependent ERAD pathway GO:0030433
The series of steps necessary to target endoplasmic reticulum (ER)-resident proteins for degradation by the cytoplasmic proteasome. Begins with recognition of the ER-resident protein, includes retrotranslocation (dislocation) of the protein from the ER to the cytosol, protein ubiquitination necessary for correct substrate transfer, transport of the protein to the proteasome, and ends with degradation of the protein by the cytoplasmic proteasome.
2 P25303 (/IMP) P25491 (/IMP)
Negative regulation of transcription from RNA polymerase II promoter in response to stress GO:0097201
Any process that decreases the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
2 Q3MI00 (/ISS) Q9QYJ3 (/ISS)
Mitochondrial genome maintenance GO:0000002
The maintenance of the structure and integrity of the mitochondrial genome; includes replication and segregation of the mitochondrial chromosome.
1 P87239 (/ISO)
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 O89114 (/IGI)
Protein folding GO:0006457
The process of assisting in the covalent and noncovalent assembly of single chain polypeptides or multisubunit complexes into the correct tertiary structure.
1 Q24133 (/ISS)
'de novo' protein folding GO:0006458
The process of assisting in the folding of a nascent peptide chain into its correct tertiary structure.
1 P25491 (/IMP)
Protein targeting to mitochondrion GO:0006626
The process of directing proteins towards and into the mitochondrion, usually mediated by mitochondrial proteins that recognize signals contained within the imported protein.
1 P25491 (/IMP)
Response to unfolded protein GO:0006986
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 unfolded protein stimulus.
1 O75953 (/IEP)
Response to unfolded protein GO:0006986
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 unfolded protein stimulus.
1 P25303 (/IMP)
Response to heat GO:0009408
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 Q24133 (/IEP)
Response to heat GO:0009408
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 Q9UDY4 (/TAS)
Ubiquitin-dependent ERAD pathway GO:0030433
The series of steps necessary to target endoplasmic reticulum (ER)-resident proteins for degradation by the cytoplasmic proteasome. Begins with recognition of the ER-resident protein, includes retrotranslocation (dislocation) of the protein from the ER to the cytosol, protein ubiquitination necessary for correct substrate transfer, transport of the protein to the proteasome, and ends with degradation of the protein by the cytoplasmic proteasome.
1 P25491 (/IGI)
Positive regulation of ATPase activity GO:0032781
Any process that activates or increases the rate of ATP hydrolysis by an ATPase.
1 P25685 (/IDA)
Positive regulation of ATPase activity GO:0032781
Any process that activates or increases the rate of ATP hydrolysis by an ATPase.
1 Q9QYJ3 (/ISO)
Protein folding in endoplasmic reticulum GO:0034975
A protein folding process that takes place in the endoplasmic reticulum (ER). Secreted, plasma membrane and organelle proteins are folded in the ER, assisted by chaperones and foldases (protein disulphide isomerases), and additional factors required for optimal folding (ATP, Ca2+ and an oxidizing environment to allow disulfide bond formation).
1 P25303 (/IMP)
TRNA import into nucleus GO:0035719
The directed movement of tRNA from the cytoplasm to the nucleus.
1 P25491 (/IMP)
Protein refolding GO:0042026
The process carried out by a cell that restores the biological activity of an unfolded or misfolded protein, using helper proteins such as chaperones.
1 P25491 (/IDA)
Protein refolding GO:0042026
The process carried out by a cell that restores the biological activity of an unfolded or misfolded protein, using helper proteins such as chaperones.
1 P87239 (/ISO)
Protein ubiquitination involved in ubiquitin-dependent protein catabolic process GO:0042787
The process in which a ubiquitin group, or multiple groups, are covalently attached to the target protein, thereby initiating the degradation of that protein.
1 P25491 (/IMP)
Protein targeting to ER GO:0045047
The process of directing proteins towards the endoplasmic reticulum (ER) using signals contained within the protein. One common mechanism uses a 16- to 30-residue signal sequence, typically located at the N-terminus of the protein and containing positively charged amino acids followed by a continuous stretch of hydrophobic residues, which directs the ribosome to the ER membrane and initiates transport of the growing polypeptide across the ER membrane.
1 P25491 (/IMP)
Chaperone mediated protein folding requiring cofactor GO:0051085
The process of assisting in the correct posttranslational noncovalent assembly of proteins, which is dependent on additional protein cofactors. This process occurs over one or several cycles of nucleotide hydrolysis-dependent binding and release.
1 Q9QYJ3 (/IGI)
Chaperone-mediated protein complex assembly GO:0051131
The aggregation, arrangement and bonding together of a set of components to form a protein complex, mediated by chaperone molecules that do not form part of the finished complex.
1 P25491 (/IDA)
Chaperone cofactor-dependent protein refolding GO:0070389
The process of assisting in the restoration of the biological activity of an unfolded or misfolded protein, which is dependent on additional protein cofactors. This process occurs over one or several cycles of nucleotide hydrolysis-dependent binding and release.
1 P25685 (/IDA)
Chaperone cofactor-dependent protein refolding GO:0070389
The process of assisting in the restoration of the biological activity of an unfolded or misfolded protein, which is dependent on additional protein cofactors. This process occurs over one or several cycles of nucleotide hydrolysis-dependent binding and release.
1 Q9QYJ3 (/ISO)
Negative regulation of inclusion body assembly GO:0090084
Any process that decreases the rate, frequency, or extent of inclusion body assembly. Inclusion body assembly is the aggregation, arrangement and bonding together of a set of components to form an inclusion body.
1 P25685 (/IDA)
Negative regulation of inclusion body assembly GO:0090084
Any process that decreases the rate, frequency, or extent of inclusion body assembly. Inclusion body assembly is the aggregation, arrangement and bonding together of a set of components to form an inclusion body.
1 Q9QYJ3 (/ISO)
Negative regulation of transcription from RNA polymerase II promoter in response to stress GO:0097201
Any process that decreases the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
1 P25685 (/IDA)
Negative regulation of transcription from RNA polymerase II promoter in response to stress GO:0097201
Any process that decreases the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
1 Q9QYJ3 (/ISO)
Regulation of cellular response to heat GO:1900034
Any process that modulates the frequency, rate or extent of cellular response to heat.
1 P25685 (/TAS)
Axonemal central apparatus assembly GO:1904158
The aggregation, arrangement and bonding together of a set of components to form an axonemal central apparatus.
1 P59910 (/IMP)
Axonemal central apparatus assembly GO:1904158
The aggregation, arrangement and bonding together of a set of components to form an axonemal central apparatus.
1 Q80Y75 (/ISO)
Axonemal central apparatus assembly GO:1904158
The aggregation, arrangement and bonding together of a set of components to form an axonemal central apparatus.
1 Q80Y75 (/ISS)

There are 26 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
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
5 O75953 (/IDA) O89114 (/IDA) P25491 (/IDA) P25685 (/IDA) Q9UDY4 (/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.
3 O89114 (/IDA) P25685 (/IDA) Q6FHS4 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
3 O35723 (/IDA) P25685 (/IDA) Q80Y75 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
3 O89114 (/ISO) Q9D832 (/ISO) Q9QYJ3 (/ISO)
Motile cilium GO:0031514
A cilium which may have a variable arrangement of axonemal microtubules and also contains molecular motors. It may beat with a whip-like pattern that promotes cell motility or transport of fluids and other cells across a cell surface, such as on epithelial cells that line the lumenal ducts of various tissues; or they may display a distinct twirling motion that directs fluid flow asymmetrically across the cellular surface to affect asymmetric body plan organization. Motile cilia can be found in single as well as multiple copies per cell.
2 P59910 (/IDA) Q80Y75 (/IDA)
Sperm flagellum GO:0036126
A microtubule-based flagellum (or cilium) that is part of a sperm, a mature male germ cell that develops from a spermatid.
2 P59910 (/IDA) Q80Y75 (/IDA)
Extracellular exosome GO:0070062
A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
2 P25685 (/IDA) Q9UDY4 (/IDA)
Extracellular exosome GO:0070062
A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
2 Q9D832 (/ISO) Q9QYJ3 (/ISO)
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 Q9QYJ3 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 P25685 (/TAS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q9QYJ3 (/ISO)
Mitochondrion GO:0005739
A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
1 P87239 (/IDA)
Mitochondrial inner membrane GO:0005743
The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
1 P87239 (/ISO)
Endoplasmic reticulum lumen GO:0005788
The volume enclosed by the membranes of the endoplasmic reticulum.
1 P25303 (/IDA)
Centrosome GO:0005813
A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle.
1 O35723 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 P25685 (/TAS)
Axoneme GO:0005930
The bundle of microtubules and associated proteins that forms the core of cilia (also called flagella) in eukaryotic cells and is responsible for their movements.
1 Q80Y75 (/IDA)
Chloroplast GO:0009507
A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma.
1 Q058J9 (/IDA)
Postsynaptic density GO:0014069
An electron dense network of proteins within and adjacent to the postsynaptic membrane in asymetric synapses. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.
1 B0K030 (/IDA)
Motile cilium GO:0031514
A cilium which may have a variable arrangement of axonemal microtubules and also contains molecular motors. It may beat with a whip-like pattern that promotes cell motility or transport of fluids and other cells across a cell surface, such as on epithelial cells that line the lumenal ducts of various tissues; or they may display a distinct twirling motion that directs fluid flow asymmetrically across the cellular surface to affect asymmetric body plan organization. Motile cilia can be found in single as well as multiple copies per cell.
1 Q80Y75 (/ISO)
Motile cilium GO:0031514
A cilium which may have a variable arrangement of axonemal microtubules and also contains molecular motors. It may beat with a whip-like pattern that promotes cell motility or transport of fluids and other cells across a cell surface, such as on epithelial cells that line the lumenal ducts of various tissues; or they may display a distinct twirling motion that directs fluid flow asymmetrically across the cellular surface to affect asymmetric body plan organization. Motile cilia can be found in single as well as multiple copies per cell.
1 Q80Y75 (/ISS)
Sperm flagellum GO:0036126
A microtubule-based flagellum (or cilium) that is part of a sperm, a mature male germ cell that develops from a spermatid.
1 Q80Y75 (/ISO)
Sperm flagellum GO:0036126
A microtubule-based flagellum (or cilium) that is part of a sperm, a mature male germ cell that develops from a spermatid.
1 Q80Y75 (/ISS)
Perinuclear region of cytoplasm GO:0048471
Cytoplasm situated near, or occurring around, the nucleus.
1 P25491 (/IDA)
TRC complex GO:0072380
An ER membrane insertion complex that contains subunits that recognize two types of transmembrane domain signals. In budding yeast the complex contains Get4p, Get5p, Sgt2p, and at least two heat shock proteins (HSPs).
1 P25491 (/IDA)
Postsynaptic cytosol GO:0099524
The region of the cytosol consisting of all cytosol that is part of the postsynapse.
1 B0K030 (/IDA)