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: waiting to be named.

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 4: Heat shock protein 75 kDa

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 13 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
ATPase activity GO:0016887
Catalysis of the reaction: ATP + H2O = ADP + phosphate + 2 H+. May or may not be coupled to another reaction.
5 A1Z6L9 (/ISS) Q7KNF3 (/ISS) Q8IHC2 (/ISS) Q8III6 (/ISS) Q8III6 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
3 A1Z6L9 (/ISS) Q5XHZ0 (/ISS) Q9CQN1 (/ISS)
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).
3 Q12931 (/IPI) Q12931 (/IPI) Q5XHZ0 (/IPI)
ATPase activity GO:0016887
Catalysis of the reaction: ATP + H2O = ADP + phosphate + 2 H+. May or may not be coupled to another reaction.
3 A0A2R8RKV0 (/IDA) A8WFV1 (/IDA) F1Q9X9 (/IDA)
Protein kinase binding GO:0019901
Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.
3 Q12931 (/IPI) Q12931 (/IPI) Q5XHZ0 (/IPI)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
3 A0A2R8RKV0 (/IDA) A8WFV1 (/IDA) F1Q9X9 (/IDA)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
2 Q12931 (/HDA) Q12931 (/HDA)
Tumor necrosis factor receptor binding GO:0005164
Interacting selectively and non-covalently with the tumor necrosis factor receptor.
2 Q12931 (/NAS) Q12931 (/NAS)
ATP binding GO:0005524
Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
2 Q8III6 (/ISS) Q8III6 (/ISS)
Protein kinase binding GO:0019901
Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.
2 A1Z6L9 (/ISS) Q9CQN1 (/ISS)
Protein kinase binding GO:0019901
Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.
1 Q9CQN1 (/ISO)
ATPase activity, coupled GO:0042623
Catalysis of the reaction: ATP + H2O = ADP + phosphate; this reaction directly drives some other reaction, for example ion transport across a membrane.
1 Q386P5 (/ISA)
Unfolded protein binding GO:0051082
Interacting selectively and non-covalently with an unfolded protein.
1 A1Z6L9 (/ISS)

There are 23 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 cellular respiration GO:1901856
Any process that stops, prevents or reduces the frequency, rate or extent of cellular respiration.
4 Q2TBI4 (/ISS) Q2TBI4 (/ISS) Q5XHZ0 (/ISS) Q9CQN1 (/ISS)
Response to oxidative stress GO:0006979
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 oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
3 A1Z6L9 (/IMP) Q7KNF3 (/IMP) Q8IHC2 (/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.
3 A1Z6L9 (/IMP) Q7KNF3 (/IMP) Q8IHC2 (/IMP)
Mitochondrial unfolded protein response GO:0034514
The series of molecular signals generated as a consequence of the presence of unfolded proteins in the mitochondrial matrix; results in transcriptional upregulation of nuclear genes encoding mitochondrial stress proteins.
3 A1Z6L9 (/IGI) Q7KNF3 (/IGI) Q8IHC2 (/IGI)
Mitochondrial unfolded protein response GO:0034514
The series of molecular signals generated as a consequence of the presence of unfolded proteins in the mitochondrial matrix; results in transcriptional upregulation of nuclear genes encoding mitochondrial stress proteins.
3 A1Z6L9 (/IMP) Q7KNF3 (/IMP) Q8IHC2 (/IMP)
Positive regulation of response to oxidative stress GO:1902884
Any process that activates or increases the frequency, rate or extent of response to oxidative stress.
3 A1Z6L9 (/IMP) Q7KNF3 (/IMP) Q8IHC2 (/IMP)
Negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide GO:1903751
Any process that stops, prevents or reduces the frequency, rate or extent of intrinsic apoptotic signaling pathway in response to hydrogen peroxide.
3 Q12931 (/ISS) Q12931 (/ISS) Q9CQN1 (/ISS)
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 Q8III6 (/ISS) Q8III6 (/ISS)
Translational attenuation GO:0009386
Translational attenuation is a regulatory mechanism analogous to ribosome-mediated transcriptional attenuation. The system requires the presence of a short ORF, called a leader peptide, encoded in the mRNA upstream of the ribosome-binding site and start codon of the gene whose translation is to be regulated. Certain conditions, such as presence of the antibiotic tetracycline in bacteria or amino acid starvation, may cause slowing or stalling of the ribosome translating the leader peptide. The stalled ribosome masks a region of the mRNA and affects which of two alternative mRNA folded structures will form, therefore controlling whether or not a ribosome will bind and initiate translation of the downstream gene. Translational attenuation is analogous to ribosome-mediated transcriptional attenuation, in which mRNA remodeling caused by ribosome stalling regulates transcriptional termination rather than translational initiation.
2 Q12931 (/IMP) Q12931 (/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.
2 Q8III6 (/ISS) Q8III6 (/ISS)
Chaperone-mediated protein folding GO:0061077
The process of inhibiting aggregation and assisting in the covalent and noncovalent assembly of single chain polypeptides or multisubunit complexes into the correct tertiary structure that is dependent on interaction with a chaperone.
2 Q12931 (/TAS) Q12931 (/TAS)
Negative regulation of cellular respiration GO:1901856
Any process that stops, prevents or reduces the frequency, rate or extent of cellular respiration.
2 Q12931 (/IMP) Q12931 (/IMP)
Negative regulation of reactive oxygen species biosynthetic process GO:1903427
Any process that stops, prevents or reduces the frequency, rate or extent of reactive oxygen species biosynthetic process.
2 Q12931 (/TAS) Q12931 (/TAS)
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 Q386P5 (/ISM)
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 A1Z6L9 (/ISS)
Multicellular organism development GO:0007275
The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).
1 Q86L04 (/IMP)
Translational attenuation GO:0009386
Translational attenuation is a regulatory mechanism analogous to ribosome-mediated transcriptional attenuation. The system requires the presence of a short ORF, called a leader peptide, encoded in the mRNA upstream of the ribosome-binding site and start codon of the gene whose translation is to be regulated. Certain conditions, such as presence of the antibiotic tetracycline in bacteria or amino acid starvation, may cause slowing or stalling of the ribosome translating the leader peptide. The stalled ribosome masks a region of the mRNA and affects which of two alternative mRNA folded structures will form, therefore controlling whether or not a ribosome will bind and initiate translation of the downstream gene. Translational attenuation is analogous to ribosome-mediated transcriptional attenuation, in which mRNA remodeling caused by ribosome stalling regulates transcriptional termination rather than translational initiation.
1 Q9CQN1 (/ISO)
Cell differentiation GO:0030154
The process in which relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism's life history. Differentiation includes the processes involved in commitment of a cell to a specific fate and its subsequent development to the mature state.
1 Q86L04 (/IMP)
Sporulation resulting in formation of a cellular spore GO:0030435
The process in which a relatively unspecialized cell acquires the specialized features of a cellular spore, a cell form that can be used for dissemination, for survival of adverse conditions because of its heat and dessication resistance, and/or for reproduction.
1 Q86L04 (/IMP)
Cellular response to heat GO:0034605
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 A1Z6L9 (/ISS)
Negative regulation of cellular respiration GO:1901856
Any process that stops, prevents or reduces the frequency, rate or extent of cellular respiration.
1 Q9CQN1 (/ISO)
Negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide GO:1903751
Any process that stops, prevents or reduces the frequency, rate or extent of intrinsic apoptotic signaling pathway in response to hydrogen peroxide.
1 Q5XHZ0 (/IMP)
Negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide GO:1903751
Any process that stops, prevents or reduces the frequency, rate or extent of intrinsic apoptotic signaling pathway in response to hydrogen peroxide.
1 Q9CQN1 (/ISO)

There are 23 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
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.
9 A0A140VJY2 (/IDA) A0A140VJY2 (/IDA) A1Z6L9 (/IDA) I3L0K7 (/IDA) Q12931 (/IDA) Q12931 (/IDA) Q386P5 (/IDA) Q7KNF3 (/IDA) Q8IHC2 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
5 A0A140VJY2 (/IDA) A0A140VJY2 (/IDA) I3L0K7 (/IDA) Q12931 (/IDA) Q12931 (/IDA)
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.
5 A1Z6L9 (/ISS) Q7KNF3 (/ISS) Q8IHC2 (/ISS) Q8III6 (/ISS) Q8III6 (/ISS)
Mitochondrial inner membrane GO:0005743
The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
5 A1Z6L9 (/ISS) Q2TBI4 (/ISS) Q2TBI4 (/ISS) Q5XHZ0 (/ISS) Q9CQN1 (/ISS)
Mitochondrial matrix GO:0005759
The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
5 A1Z6L9 (/ISS) Q2TBI4 (/ISS) Q2TBI4 (/ISS) Q5XHZ0 (/ISS) Q9CQN1 (/ISS)
Mitochondrial inner membrane GO:0005743
The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
3 Q12931 (/IDA) Q12931 (/IDA) Q5XHZ0 (/IDA)
Mitochondrial intermembrane space GO:0005758
The region between the inner and outer lipid bilayers of the mitochondrial envelope.
3 Q12931 (/ISS) Q12931 (/ISS) Q9CQN1 (/ISS)
Mitochondrial matrix GO:0005759
The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
2 Q12931 (/IDA) Q12931 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
2 Q12931 (/HDA) Q12931 (/HDA)
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 A1Z6L9 (/ISS)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9CQN1 (/ISO)
Nucleolus GO:0005730
A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
1 Q86L04 (/IDA)
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 Q9CQN1 (/HDA)
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 Q386P5 (/ISM)
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 Q9CQN1 (/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 Q386P5 (/RCA)
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 Q9CQN1 (/ISO)
Mitochondrial intermembrane space GO:0005758
The region between the inner and outer lipid bilayers of the mitochondrial envelope.
1 Q5XHZ0 (/IDA)
Mitochondrial intermembrane space GO:0005758
The region between the inner and outer lipid bilayers of the mitochondrial envelope.
1 Q9CQN1 (/ISO)
Mitochondrial matrix GO:0005759
The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
1 Q9CQN1 (/ISO)
Kinetoplast GO:0020023
A sub-structure within the large single mitochondrion of kinetoplastid parasites and which is closely associated with the flagellar pocket and basal body of the flagellum.
1 Q386P5 (/IDA)
Spore wall GO:0031160
The specialized envelope lying outside the cell membrane of a spore.
1 Q86L04 (/NAS)
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.
1 A1Z6L9 (/ISS)