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:

"
C2 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 73: protein fantom isoform X1

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 3 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 Q68CZ1 (/IPI) Q8CG73 (/IPI) Q96KN7 (/IPI) Q9EPQ2 (/IPI)
Thromboxane A2 receptor binding GO:0031870
Interacting selectively and non-covalently with a thromboxane A2 receptor.
1 Q68CZ1 (/IPI)
Thromboxane A2 receptor binding GO:0031870
Interacting selectively and non-covalently with a thromboxane A2 receptor.
1 Q8CG73 (/ISO)

There are 39 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
Embryonic pattern specification GO:0009880
The process that results in the patterns of cell differentiation that will arise in an embryo.
3 A1L275 (/IMP) E7F4E7 (/IMP) G3K006 (/IMP)
Cilium assembly GO:0060271
The assembly of a cilium, a specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface. Each cilium is bounded by an extrusion of the cytoplasmic membrane, and contains a regular longitudinal array of microtubules, anchored basally in a centriole.
2 Q09459 (/IMP) Q8CG73 (/IMP)
Non-motile cilium assembly GO:1905515
The aggregation, arrangement and bonding together of a set of components to form a non-motile cilium.
2 Q09459 (/IMP) Q8CG73 (/IMP)
In utero embryonic development GO:0001701
The process whose specific outcome is the progression of the embryo in the uterus over time, from formation of the zygote in the oviduct, to birth. An example of this process is found in Mus musculus.
1 Q8CG73 (/IMP)
Establishment of planar polarity GO:0001736
Coordinated organization of groups of cells in the plane of an epithelium, such that they all orient to similar coordinates.
1 Q8CG73 (/IMP)
Kidney development GO:0001822
The process whose specific outcome is the progression of the kidney over time, from its formation to the mature structure. The kidney is an organ that filters the blood and/or excretes the end products of body metabolism in the form of urine.
1 Q8CG73 (/IMP)
Liver development GO:0001889
The process whose specific outcome is the progression of the liver over time, from its formation to the mature structure. The liver is an exocrine gland which secretes bile and functions in metabolism of protein and carbohydrate and fat, synthesizes substances involved in the clotting of the blood, synthesizes vitamin A, detoxifies poisonous substances, stores glycogen, and breaks down worn-out erythrocytes.
1 Q8CG73 (/IMP)
Chemotaxis GO:0006935
The directed movement of a motile cell or organism, or the directed growth of a cell guided by a specific chemical concentration gradient. Movement may be towards a higher concentration (positive chemotaxis) or towards a lower concentration (negative chemotaxis).
1 Q09459 (/IMP)
Establishment or maintenance of cell polarity GO:0007163
Any cellular process that results in the specification, formation or maintenance of anisotropic intracellular organization or cell growth patterns.
1 Q8CG73 (/IMP)
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.
1 Q8CG73 (/IMP)
Brain development GO:0007420
The process whose specific outcome is the progression of the brain over time, from its formation to the mature structure. Brain development begins with patterning events in the neural tube and ends with the mature structure that is the center of thought and emotion. The brain is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.).
1 Q8CG73 (/IMP)
Visual perception GO:0007601
The series of events required for an organism to receive a visual stimulus, convert it to a molecular signal, and recognize and characterize the signal. Visual stimuli are detected in the form of photons and are processed to form an image.
1 Q9EPQ2 (/IMP)
Regulation of smoothened signaling pathway GO:0008589
Any process that modulates the frequency, rate or extent of smoothened signaling.
1 Q8CG73 (/IMP)
Neural tube patterning GO:0021532
The regionalization process that regulates the coordinated growth that establishes the non-random spatial arrangement of the neural tube.
1 Q8CG73 (/IMP)
Telencephalon development GO:0021537
The process whose specific outcome is the progression of the telencephalon over time, from its formation to the mature structure. The telencephalon is the paired anteriolateral division of the prosencephalon plus the lamina terminalis from which the olfactory lobes, cerebral cortex, and subcortical nuclei are derived.
1 Q8CG73 (/IMP)
Cerebellum development GO:0021549
The process whose specific outcome is the progression of the cerebellum over time, from its formation to the mature structure. The cerebellum is the portion of the brain in the back of the head between the cerebrum and the pons. In mice, the cerebellum controls balance for walking and standing, modulates the force and range of movement and is involved in the learning of motor skills.
1 Q8CG73 (/IMP)
Lateral ventricle development GO:0021670
The process whose specific outcome is the progression of the lateral ventricles over time, from the formation to the mature structure. The two lateral ventricles are a cavity in each of the cerebral hemispheres derived from the cavity of the embryonic neural tube. They are separated from each other by the septum pellucidum, and each communicates with the third ventricle by the foramen of Monro, through which also the choroid plexuses of the lateral ventricles become continuous with that of the third ventricle.
1 Q8CG73 (/IMP)
Olfactory bulb development GO:0021772
The progression of the olfactory bulb over time from its initial formation until its mature state. The olfactory bulb coordinates neuronal signaling involved in the perception of smell. It receives input from the sensory neurons and outputs to the olfactory cortex.
1 Q8CG73 (/IMP)
Corpus callosum development GO:0022038
The process whose specific outcome is the progression of the corpus callosum over time, from its formation to the mature structure. The corpus callosum is a thick bundle of nerve fibers comprising a commissural plate connecting the two cerebral hemispheres. It consists of contralateral axon projections that provide communication between the right and left cerebral hemispheres.
1 Q8CG73 (/IMP)
Protein to membrane docking GO:0022615
The initial attachment of a protein to a target membrane, mediated by a proteins protruding from the target membrane. Docking requires only that the proteins come close enough to interact and adhere.
1 Q09459 (/IMP)
Limb morphogenesis GO:0035108
The process in which the anatomical structures of a limb are generated and organized. A limb is a paired appendage of a tetrapod used for locomotion or grasping.
1 Q8CG73 (/IMP)
Embryonic forelimb morphogenesis GO:0035115
The process, occurring in the embryo, by which the anatomical structures of the forelimb are generated and organized. The forelimbs are the front limbs of an animal, e.g. the arms of a human.
1 Q8CG73 (/IMP)
Embryonic hindlimb morphogenesis GO:0035116
The process, occurring in the embryo, by which the anatomical structures of the hindlimbs are generated and organized. The hindlimbs are the posterior limbs of an animal.
1 Q8CG73 (/IMP)
Eye photoreceptor cell development GO:0042462
Development of a photoreceptor, a sensory cell in the eye that reacts to the presence of light. They usually contain a pigment that undergoes a chemical change when light is absorbed, thus stimulating a nerve.
1 Q9EPQ2 (/IMP)
Camera-type eye development GO:0043010
The process whose specific outcome is the progression of the camera-type eye over time, from its formation to the mature structure. The camera-type eye is an organ of sight that receives light through an aperture and focuses it through a lens, projecting it on a photoreceptor field.
1 Q8CG73 (/IMP)
Nose development GO:0043584
The process whose specific outcome is the progression of the nose over time, from its formation to the mature structure. The nose is the specialized structure of the face that serves as the organ of the sense of smell and as part of the respiratory system. Includes the nasi externus (external nose) and cavitas nasi (nasal cavity).
1 Q8CG73 (/IMP)
Negative regulation of G protein-coupled receptor signaling pathway GO:0045744
Any process that stops, prevents, or reduces the frequency, rate or extent of G protein-coupled receptor signaling pathway.
1 Q68CZ1 (/IDA)
Negative regulation of G protein-coupled receptor signaling pathway GO:0045744
Any process that stops, prevents, or reduces the frequency, rate or extent of G protein-coupled receptor signaling pathway.
1 Q8CG73 (/ISO)
Negative regulation of G protein-coupled receptor signaling pathway GO:0045744
Any process that stops, prevents, or reduces the frequency, rate or extent of G protein-coupled receptor signaling pathway.
1 Q8CG73 (/ISS)
Detection of light stimulus involved in visual perception GO:0050908
The series of events involved in visual perception in which a light stimulus is received and converted into a molecular signal.
1 F1PKQ6 (/IMP)
Pericardium development GO:0060039
The process whose specific outcome is the progression of the pericardium over time, from its formation to the mature structure. The pericardium is a double-walled sac that contains the heart and the roots of the aorta, vena cava and the pulmonary artery.
1 Q8CG73 (/IMP)
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 Q9EPQ2 (/IMP)
Head development GO:0060322
The biological process whose specific outcome is the progression of a head from an initial condition to its mature state. The head is the anterior-most division of the body.
1 Q8CG73 (/IMP)
Neural precursor cell proliferation GO:0061351
The multiplication or reproduction of neural precursor cells, resulting in the expansion of a cell population. A neural precursor cell is either a nervous system stem cell or a nervous system progenitor cell.
1 Q9EPQ2 (/IMP)
Cochlea development GO:0090102
The progression of the cochlea over time from its formation to the mature structure. The cochlea is the snail-shaped portion of the inner ear that is responsible for the detection of sound.
1 Q8CG73 (/IMP)
Receptor localization to non-motile cilium GO:0097500
A process in which a receptor is transported to, or maintained in, a location within a non-motile cilium.
1 Q09459 (/IMP)
Ciliary basal body-plasma membrane docking GO:0097711
The docking of a cytosolic centriole/basal body to the plasma membrane via the ciliary transition fibers. In some species this may happen via an intermediate step, by first docking to the ciliary vesicle via the ciliary transition fibers. The basal body-ciliary vesicle then relocates to the plasma membrane, followed by the ciliary vesicle fusing with the plasma membrane, effectively attaching the basal body to the plasma membrane.
1 Q68CZ1 (/TAS)
Protein localization to ciliary transition zone GO:1904491
A process in which a protein is transported to, or maintained in, a location within a ciliary transition zone.
1 Q09459 (/IMP)
Non-motile cilium assembly GO:1905515
The aggregation, arrangement and bonding together of a set of components to form a non-motile cilium.
1 Q09459 (/IGI)

There are 30 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
Ciliary transition zone GO:0035869
A region of the cilium between the basal body and proximal segment that is characterized by Y-shaped assemblages that connect axonemal microtubules to the ciliary membrane. The ciliary transition zone appears to function as a gate that controls ciliary membrane composition and separates the cytosol from the ciliary plasm.
5 D3Z8G3 (/IDA) Q09459 (/IDA) Q57YZ5 (/IDA) Q68CZ1 (/IDA) Q8CG73 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
4 A0A087WX34 (/IDA) H3BS47 (/IDA) H3BV03 (/IDA) Q68CZ1 (/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.
4 A0A087WX34 (/IDA) H3BS47 (/IDA) H3BV03 (/IDA) Q68CZ1 (/IDA)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
4 A0A087WX34 (/IDA) H3BS47 (/IDA) H3BV03 (/IDA) Q68CZ1 (/IDA)
Ciliary basal body GO:0036064
A membrane-tethered, short cylindrical array of microtubules and associated proteins found at the base of a eukaryotic cilium (also called flagellum) that is similar in structure to a centriole and derives from it. The cilium basal body is the site of assembly and remodelling of the cilium and serves as a nucleation site for axoneme growth. As well as anchoring the cilium, it is thought to provide a selective gateway regulating the entry of ciliary proteins and vesicles by intraflagellar transport.
4 D3Z8G3 (/IDA) Q09459 (/IDA) Q68CZ1 (/IDA) Q8CG73 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 Q68CZ1 (/IDA) Q8CG73 (/IDA)
Cilium GO:0005929
A specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface and of some cytoplasmic parts. Each cilium is largely bounded by an extrusion of the cytoplasmic (plasma) membrane, and contains a regular longitudinal array of microtubules, anchored to a basal body.
2 Q68CZ1 (/IDA) Q9EPQ2 (/IDA)
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.
2 Q68CZ1 (/IDA) Q9EPQ2 (/IDA)
Photoreceptor connecting cilium GO:0032391
The portion of the photoreceptor cell cilium linking the photoreceptor inner and outer segments. It's considered to be equivalent to the ciliary transition zone.
2 D3Z8G3 (/IDA) Q9EPQ2 (/IDA)
Photoreceptor connecting cilium GO:0032391
The portion of the photoreceptor cell cilium linking the photoreceptor inner and outer segments. It's considered to be equivalent to the ciliary transition zone.
2 Q96KN7 (/ISS) Q9GLM3 (/ISS)
Ciliary rootlet GO:0035253
A cytoskeleton-like structure, originating from the basal body at the proximal end of a cilium, and extending proximally toward the cell nucleus. Rootlets are typically 80-100 nm in diameter and contain cross striae distributed at regular intervals of approximately 55-70 nm.
2 Q8CG73 (/ISO) Q9EPQ2 (/ISO)
Ciliary transition zone GO:0035869
A region of the cilium between the basal body and proximal segment that is characterized by Y-shaped assemblages that connect axonemal microtubules to the ciliary membrane. The ciliary transition zone appears to function as a gate that controls ciliary membrane composition and separates the cytosol from the ciliary plasm.
2 Q8CG73 (/ISO) Q9EPQ2 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q8CG73 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q8CG73 (/ISO)
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 Q68CZ1 (/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 Q8CG73 (/ISO)
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 Q8CG73 (/ISO)
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 Q68CZ1 (/TAS)
Axonemal microtubule GO:0005879
A microtubule in the axoneme of a eukaryotic cilium or flagellum; an axoneme contains nine modified doublet microtubules, which may or may not surround a pair of single microtubules.
1 D3Z8G3 (/IDA)
Axonemal microtubule GO:0005879
A microtubule in the axoneme of a eukaryotic cilium or flagellum; an axoneme contains nine modified doublet microtubules, which may or may not surround a pair of single microtubules.
1 Q8CG73 (/ISO)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
1 Q8CG73 (/ISO)
Cell-cell junction GO:0005911
A cell junction that forms a connection between two or more cells in a multicellular organism; excludes direct cytoplasmic junctions such as ring canals.
1 Q68CZ1 (/IDA)
Cell-cell junction GO:0005911
A cell junction that forms a connection between two or more cells in a multicellular organism; excludes direct cytoplasmic junctions such as ring canals.
1 Q8CG73 (/ISO)
Cell-cell junction GO:0005911
A cell junction that forms a connection between two or more cells in a multicellular organism; excludes direct cytoplasmic junctions such as ring canals.
1 Q8CG73 (/ISS)
Cilium GO:0005929
A specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface and of some cytoplasmic parts. Each cilium is largely bounded by an extrusion of the cytoplasmic (plasma) membrane, and contains a regular longitudinal array of microtubules, anchored to a basal body.
1 Q8CG73 (/ISO)
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 Q8CG73 (/ISO)
Photoreceptor connecting cilium GO:0032391
The portion of the photoreceptor cell cilium linking the photoreceptor inner and outer segments. It's considered to be equivalent to the ciliary transition zone.
1 Q8CG73 (/ISO)
Ciliary rootlet GO:0035253
A cytoskeleton-like structure, originating from the basal body at the proximal end of a cilium, and extending proximally toward the cell nucleus. Rootlets are typically 80-100 nm in diameter and contain cross striae distributed at regular intervals of approximately 55-70 nm.
1 D3Z8G3 (/IDA)
Ciliary basal body GO:0036064
A membrane-tethered, short cylindrical array of microtubules and associated proteins found at the base of a eukaryotic cilium (also called flagellum) that is similar in structure to a centriole and derives from it. The cilium basal body is the site of assembly and remodelling of the cilium and serves as a nucleation site for axoneme growth. As well as anchoring the cilium, it is thought to provide a selective gateway regulating the entry of ciliary proteins and vesicles by intraflagellar transport.
1 Q8CG73 (/ISO)
Non-motile cilium GO:0097730
A cilium which may have a variable array of axonemal microtubules but does not contain molecular motors.
1 Q9EPQ2 (/IDA)
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