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:

"
Spermadhesin, CUB 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 13: Membrane frizzled-related protein

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 11 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).
16 O60494 (/IPI) O60494 (/IPI) O60494 (/IPI) O60494 (/IPI) O60494 (/IPI) O60494 (/IPI) O60494 (/IPI) O60494 (/IPI) O70244 (/IPI) O70244 (/IPI)
(6 more)
Drug binding GO:0008144
Interacting selectively and non-covalently with a drug, any naturally occurring or synthetic substance, other than a nutrient, that, when administered or applied to an organism, affects the structure or functioning of the organism; in particular, any such substance used in the diagnosis, prevention, or treatment of disease.
16 O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) Q9TU53 (/ISS) Q9TU53 (/ISS)
(6 more)
Signaling receptor activity GO:0038023
Receiving a signal and transmitting it in the cell to initiate a change in cell activity. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response.
16 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O70244 (/TAS) O70244 (/TAS)
(6 more)
Drug binding GO:0008144
Interacting selectively and non-covalently with a drug, any naturally occurring or synthetic substance, other than a nutrient, that, when administered or applied to an organism, affects the structure or functioning of the organism; in particular, any such substance used in the diagnosis, prevention, or treatment of disease.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Hemoglobin binding GO:0030492
Interacting selectively and non-covalently with hemoglobin, an oxygen carrying, conjugated protein containing four heme groups and globin.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Signaling receptor activity GO:0038023
Receiving a signal and transmitting it in the cell to initiate a change in cell activity. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Cargo receptor activity GO:0038024
Binding specifically to a substance (cargo) to deliver it to a transport vesicle. Cargo receptors span a membrane (either the plasma membrane or a vesicle membrane), binding simultaneously to cargo molecules and coat adaptors, to efficiently recruit soluble proteins to nascent vesicles.
8 O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP)
Cargo receptor activity GO:0038024
Binding specifically to a substance (cargo) to deliver it to a transport vesicle. Cargo receptors span a membrane (either the plasma membrane or a vesicle membrane), binding simultaneously to cargo molecules and coat adaptors, to efficiently recruit soluble proteins to nascent vesicles.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
8 O70244 (/IPI) O70244 (/IPI) O70244 (/IPI) O70244 (/IPI) O70244 (/IPI) O70244 (/IPI) O70244 (/IPI) O70244 (/IPI)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
8 O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA)

There are 22 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
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.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Tissue homeostasis GO:0001894
A homeostatic process involved in the maintenance of an internal steady state within a defined tissue of an organism, including control of cellular proliferation and death and control of metabolic function.
8 O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS)
Vitamin metabolic process GO:0006766
The chemical reactions and pathways involving vitamins. Vitamin is a general term for a number of unrelated organic substances that occur in many foods in small amounts and that are necessary in trace amounts for the normal metabolic functioning of the body. Vitamins may be water-soluble or fat-soluble and usually serve as components of coenzyme systems.
8 O70244 (/TAS) O70244 (/TAS) O70244 (/TAS) O70244 (/TAS) O70244 (/TAS) O70244 (/TAS) O70244 (/TAS) O70244 (/TAS)
Receptor-mediated endocytosis GO:0006898
An endocytosis process in which cell surface receptors ensure specificity of transport. A specific receptor on the cell surface binds tightly to the extracellular macromolecule (the ligand) that it recognizes; the plasma-membrane region containing the receptor-ligand complex then undergoes endocytosis, forming a transport vesicle containing the receptor-ligand complex and excluding most other plasma-membrane proteins. Receptor-mediated endocytosis generally occurs via clathrin-coated pits and vesicles.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Receptor-mediated endocytosis GO:0006898
An endocytosis process in which cell surface receptors ensure specificity of transport. A specific receptor on the cell surface binds tightly to the extracellular macromolecule (the ligand) that it recognizes; the plasma-membrane region containing the receptor-ligand complex then undergoes endocytosis, forming a transport vesicle containing the receptor-ligand complex and excluding most other plasma-membrane proteins. Receptor-mediated endocytosis generally occurs via clathrin-coated pits and vesicles.
8 O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP)
Receptor-mediated endocytosis GO:0006898
An endocytosis process in which cell surface receptors ensure specificity of transport. A specific receptor on the cell surface binds tightly to the extracellular macromolecule (the ligand) that it recognizes; the plasma-membrane region containing the receptor-ligand complex then undergoes endocytosis, forming a transport vesicle containing the receptor-ligand complex and excluding most other plasma-membrane proteins. Receptor-mediated endocytosis generally occurs via clathrin-coated pits and vesicles.
8 O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS)
Response to nutrient GO:0007584
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 nutrient stimulus.
8 O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP)
Cobalamin metabolic process GO:0009235
The chemical reactions and pathways involving cobalamin (vitamin B12), a water-soluble vitamin characterized by possession of a corrin nucleus containing a cobalt atom.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Cobalamin transport GO:0015889
The directed movement of cobalamin (vitamin B12), a water-soluble vitamin characterized by possession of a corrin nucleus containing a cobalt atom, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
8 O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP)
Cobalamin transport GO:0015889
The directed movement of cobalamin (vitamin B12), a water-soluble vitamin characterized by possession of a corrin nucleus containing a cobalt atom, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Endocytic hemoglobin import GO:0020028
The directed movement into a tissue or a cell or organelle of externally available hemoglobin by receptor-mediated endocytosis.
8 O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP)
High-density lipoprotein particle clearance GO:0034384
The process in which a high-density lipoprotein particle is removed from the blood via receptor-mediated endocytosis and its constituent parts degraded.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Vitamin D metabolic process GO:0042359
The chemical reactions and pathways involving vitamin D, any of a group of related, fat-soluble compounds that are derived from delta-5,7 steroids and play a central role in calcium metabolism. Specific forms of vitamin D include calciferol (ergocalciferol; vitamin D2) and cholecalciferol (calciol; vitamin D3).
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Cobalamin catabolic process GO:0042366
The chemical reactions and pathways resulting in the breakdown of cobalamin (vitamin B12), a water-soluble vitamin characterized by possession of a corrin nucleus containing a cobalt atom.
8 O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP) O70244 (/IMP)
Protein homotrimerization GO:0070207
The formation of a protein homotrimer, a macromolecular structure consisting of three noncovalently associated identical subunits.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Renal protein absorption GO:0097017
A renal system process in which proteins are taken up from the collecting ducts, glomerulus and proximal and distal loops of the nephron. In non-mammalian species, absorption may occur in related structures (e.g. protein absorption is observed in nephrocytes in Drosophila, see PMID:23264686).
2 Q9W332 (/IMP) Q9W332 (/IMP)
Nephrocyte filtration GO:0097206
The process by which hemolymph is filtered based on size and charge through a nephrocyte filtration barrier formed by the basement membrane and nephrocyte diaphragm.
2 Q9W332 (/IMP) Q9W332 (/IMP)
Eye development GO:0001654
The process whose specific outcome is the progression of the eye over time, from its formation to the mature structure. The eye is the organ of sight.
1 F1QRG7 (/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 Q8K480 (/IMP)
Embryo development ending in birth or egg hatching GO:0009792
The process whose specific outcome is the progression of an embryo over time, from zygote formation until the end of the embryonic life stage. The end of the embryonic life stage is organism-specific and may be somewhat arbitrary; for mammals it is usually considered to be birth, for insects the hatching of the first instar larva from the eggshell.
1 Q9BY79 (/NAS)
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 Q8K480 (/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 Q8K480 (/IMP)

There are 24 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
Apical plasma membrane GO:0016324
The region of the plasma membrane located at the apical end of the cell.
24 O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O70244 (/IDA) O70244 (/IDA)
(14 more)
Brush border membrane GO:0031526
The portion of the plasma membrane surrounding the brush border.
16 O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) Q9TU53 (/ISS) Q9TU53 (/ISS)
(6 more)
Golgi-associated vesicle GO:0005798
Any vesicle associated with the Golgi complex and involved in mediating transport within the Golgi or between the Golgi and other parts of the cell.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/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.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
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.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/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.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Clathrin-coated pit GO:0005905
A part of the endomembrane system in the form of an invagination of a membrane upon which a clathrin coat forms, and that can be converted by vesicle budding into a clathrin-coated vesicle. Coated pits form on the plasma membrane, where they are involved in receptor-mediated selective transport of many proteins and other macromolecules across the cell membrane, in the trans-Golgi network, and on some endosomes.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Endosome membrane GO:0010008
The lipid bilayer surrounding an endosome.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
Apical plasma membrane GO:0016324
The region of the plasma membrane located at the apical end of the cell.
8 O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS) O60494 (/ISS)
Coated vesicle GO:0030135
Small membrane-bounded organelle formed by pinching off of a coated region of membrane. Some coats are made of clathrin, whereas others are made from other proteins.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Endocytic vesicle GO:0030139
A membrane-bounded intracellular vesicle formed by invagination of the plasma membrane around an extracellular substance. Endocytic vesicles fuse with early endosomes to deliver the cargo for further sorting.
8 O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA)
Endocytic vesicle membrane GO:0030666
The lipid bilayer surrounding an endocytic vesicle.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Extrinsic component of external side of plasma membrane GO:0031232
The component of a plasma membrane consisting of gene products and protein complexes that are loosely bound to its external surface, but not integrated into the hydrophobic region.
8 O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS)
Brush border membrane GO:0031526
The portion of the plasma membrane surrounding the brush border.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Brush border membrane GO:0031526
The portion of the plasma membrane surrounding the brush border.
8 O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS) O60494 (/NAS)
Protein-containing complex GO:0032991
A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which at least one component is a protein and the constituent parts function together.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Lysosomal lumen GO:0043202
The volume enclosed within the lysosomal membrane.
8 O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA) O70244 (/IDA)
Lysosomal lumen GO:0043202
The volume enclosed within the lysosomal membrane.
8 O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS) O60494 (/TAS)
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.
8 O60494 (/HDA) O60494 (/HDA) O60494 (/HDA) O60494 (/HDA) O60494 (/HDA) O60494 (/HDA) O60494 (/HDA) O60494 (/HDA)
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.
8 O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/IDA) O60494 (/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 Q9VTP0 (/HDA)
Integral component of membrane GO:0016021
The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
1 Q9BY79 (/TAS)