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 96: Spectrin beta chain

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 14 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
Structural constituent of cytoskeleton GO:0005200
The action of a molecule that contributes to the structural integrity of a cytoskeletal structure.
6 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q9QWN8 (/TAS)
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).
6 Q01082 (/IPI) Q01082 (/IPI) Q01082 (/IPI) Q01082 (/IPI) Q62261 (/IPI) Q9QWN8 (/IPI)
Actin binding GO:0003779
Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
5 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS)
Cadherin binding GO:0045296
Interacting selectively and non-covalently with cadherin, a type I membrane protein involved in cell adhesion.
5 O15020 (/HDA) Q01082 (/HDA) Q01082 (/HDA) Q01082 (/HDA) Q01082 (/HDA)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
4 Q01082 (/HDA) Q01082 (/HDA) Q01082 (/HDA) Q01082 (/HDA)
Structural constituent of cytoskeleton GO:0005200
The action of a molecule that contributes to the structural integrity of a cytoskeletal structure.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Ankyrin binding GO:0030506
Interacting selectively and non-covalently with ankyrin, a 200 kDa cytoskeletal protein that attaches other cytoskeletal proteins to integral membrane proteins.
4 Q01082 (/IPI) Q01082 (/IPI) Q01082 (/IPI) Q01082 (/IPI)
Ankyrin binding GO:0030506
Interacting selectively and non-covalently with ankyrin, a 200 kDa cytoskeletal protein that attaches other cytoskeletal proteins to integral membrane proteins.
4 Q01082 (/NAS) Q01082 (/NAS) Q01082 (/NAS) Q01082 (/NAS)
GTPase binding GO:0051020
Interacting selectively and non-covalently with a GTPase, any enzyme that catalyzes the hydrolysis of GTP.
4 Q01082 (/IPI) Q01082 (/IPI) Q01082 (/IPI) Q01082 (/IPI)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
3 A0A0G2K8W9 (/IPI) G3V6S0 (/IPI) Q6XD99 (/IPI)
Structural constituent of cytoskeleton GO:0005200
The action of a molecule that contributes to the structural integrity of a cytoskeletal structure.
1 Q62261 (/ISO)
Ankyrin binding GO:0030506
Interacting selectively and non-covalently with ankyrin, a 200 kDa cytoskeletal protein that attaches other cytoskeletal proteins to integral membrane proteins.
1 Q62261 (/ISO)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
1 Q62261 (/ISO)
GTPase binding GO:0051020
Interacting selectively and non-covalently with a GTPase, any enzyme that catalyzes the hydrolysis of GTP.
1 Q62261 (/ISO)

There are 27 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
MAPK cascade GO:0000165
An intracellular protein kinase cascade containing at least a MAPK, a MAPKK and a MAP3K. The cascade can also contain an additional tiers: the upstream MAP4K. The kinases in each tier phosphorylate and activate the kinase in the downstream tier to transmit a signal within a cell.
5 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS)
Endoplasmic reticulum to Golgi vesicle-mediated transport GO:0006888
The directed movement of substances from the endoplasmic reticulum (ER) to the Golgi, mediated by COP II vesicles. Small COP II coated vesicles form from the ER and then fuse directly with the cis-Golgi. Larger structures are transported along microtubules to the cis-Golgi.
5 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS)
Axon guidance GO:0007411
The chemotaxis process that directs the migration of an axon growth cone to a specific target site in response to a combination of attractive and repulsive cues.
5 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS)
Protein localization to plasma membrane GO:0072659
A process in which a protein is transported to, or maintained in, a specific location in the plasma membrane.
5 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q62261 (/IMP)
Mitotic cytokinesis GO:0000281
A cell cycle process that results in the division of the cytoplasm of a cell after mitosis, resulting in the separation of the original cell into two daughter cells.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Plasma membrane organization GO:0007009
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the plasma membrane.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Golgi to plasma membrane protein transport GO:0043001
The directed movement of proteins from the Golgi to the plasma membrane in transport vesicles that move from the trans-Golgi network to the plasma membrane.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Membrane assembly GO:0071709
The aggregation, arrangement and bonding together of a set of components to form a membrane.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Positive regulation of interleukin-2 secretion GO:1900042
Any process that activates or increases the frequency, rate or extent of interleukin-2 secretion.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Regulation of protein localization to plasma membrane GO:1903076
Any process that modulates the frequency, rate or extent of protein localization to plasma membrane.
4 Q01082 (/IGI) Q01082 (/IGI) Q01082 (/IGI) Q01082 (/IGI)
Positive regulation of protein localization to plasma membrane GO:1903078
Any process that activates or increases the frequency, rate or extent of protein localization to plasma membrane.
4 Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP) Q01082 (/IMP)
Mitotic cytokinesis GO:0000281
A cell cycle process that results in the division of the cytoplasm of a cell after mitosis, resulting in the separation of the original cell into two daughter cells.
1 Q62261 (/ISO)
Plasma membrane organization GO:0007009
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the plasma membrane.
1 Q62261 (/ISO)
Common-partner SMAD protein phosphorylation GO:0007182
The process of introducing a phosphate group on to a common-partner SMAD protein. A common partner SMAD protein binds to pathway-restricted SMAD proteins forming a complex that translocates to the nucleus.
1 Q62261 (/IDA)
Synaptic vesicle exocytosis GO:0016079
Fusion of intracellular membrane-bounded vesicles with the pre-synaptic membrane of the neuronal cell resulting in release of neurotransmitter into the synaptic cleft.
1 Q9QWN8 (/IPI)
Synaptic vesicle docking GO:0016081
The initial (indirect) attachment of a synaptic vesicle membrane to the presynaptic active zone membrane, mediated by proteins protruding from the membrane and proteins of the presynaptic active zone cytoplasmic component. Synaptic vesicle tethering is the first step in this process.
1 Q9QWN8 (/TAS)
Vesicle-mediated transport GO:0016192
A cellular transport process in which transported substances are moved in membrane-bounded vesicles; transported substances are enclosed in the vesicle lumen or located in the vesicle membrane. The process begins with a step that directs a substance to the forming vesicle, and includes vesicle budding and coating. Vesicles are then targeted to, and fuse with, an acceptor membrane.
1 O15020 (/IDA)
Regulation of calcium ion-dependent exocytosis GO:0017158
Any process that modulates the frequency, rate or extent of calcium ion-dependent exocytosis.
1 Q9QWN8 (/TAS)
Antigen processing and presentation of exogenous peptide antigen via MHC class II GO:0019886
The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein.
1 O15020 (/TAS)
Golgi to plasma membrane protein transport GO:0043001
The directed movement of proteins from the Golgi to the plasma membrane in transport vesicles that move from the trans-Golgi network to the plasma membrane.
1 Q62261 (/ISO)
Regulation of SMAD protein signal transduction GO:0060390
Any process that modulates the rate, frequency or extent of SMAD protein signal transduction. Pathway-restricted SMAD proteins and common-partner SMAD proteins are involved in the transforming growth factor beta receptor signaling pathways.
1 Q62261 (/IDA)
Cellular response to ethanol GO:0071361
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 an ethanol stimulus.
1 Q9QWN8 (/IEP)
Membrane assembly GO:0071709
The aggregation, arrangement and bonding together of a set of components to form a membrane.
1 Q62261 (/ISO)
Protein localization to plasma membrane GO:0072659
A process in which a protein is transported to, or maintained in, a specific location in the plasma membrane.
1 Q62261 (/ISO)
Positive regulation of interleukin-2 secretion GO:1900042
Any process that activates or increases the frequency, rate or extent of interleukin-2 secretion.
1 Q62261 (/ISO)
Regulation of protein localization to plasma membrane GO:1903076
Any process that modulates the frequency, rate or extent of protein localization to plasma membrane.
1 Q62261 (/ISO)
Positive regulation of protein localization to plasma membrane GO:1903078
Any process that activates or increases the frequency, rate or extent of protein localization to plasma membrane.
1 Q62261 (/ISO)

There are 34 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.
6 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q9QWN8 (/TAS)
Spectrin GO:0008091
Membrane associated dimeric protein (240 and 220 kDa) of erythrocytes. Forms a complex with ankyrin, actin and probably other components of the membrane cytoskeleton, so that there is a mesh of proteins underlying the plasma membrane, potentially restricting the lateral mobility of integral proteins.
6 O15020 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q01082 (/TAS) Q9QWN8 (/TAS)
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.
4 Q01082 (/IDA) Q01082 (/IDA) Q01082 (/IDA) Q01082 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
4 Q01082 (/IDA) Q01082 (/IDA) Q01082 (/IDA) Q01082 (/IDA)
Spectrin-associated cytoskeleton GO:0014731
The part of the cytoskeleton composed of spectrin, protein 4.1 and ankyrin. Spectrin-associated cytoskeleton is associated with the plasma membrane.
4 Q01082 (/NAS) Q01082 (/NAS) Q01082 (/NAS) Q01082 (/NAS)
Axolemma GO:0030673
The portion of the plasma membrane surrounding an axon; it is a specialized trilaminar random mosaic of protein molecules floating within a fluid matrix of highly mobile phospholipid molecules, 7-8 nm in thickness.
4 Q01082 (/ISS) Q01082 (/ISS) Q01082 (/ISS) Q01082 (/ISS)
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.
4 Q01082 (/HDA) Q01082 (/HDA) Q01082 (/HDA) Q01082 (/HDA)
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.
3 A0A0G2K8W9 (/IDA) G3V6S0 (/IDA) Q6XD99 (/IDA)
Postsynapse GO:0098794
The part of a synapse that is part of the post-synaptic cell.
3 A0A0G2K8W9 (/IDA) G3V6S0 (/IDA) Q6XD99 (/IDA)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
3 A0A0G2K8W9 (/IDA) G3V6S0 (/IDA) Q6XD99 (/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.
2 Q62261 (/IDA) Q9QWN8 (/IDA)
Golgi membrane GO:0000139
The lipid bilayer surrounding any of the compartments of the Golgi apparatus.
1 Q9QWN8 (/IDA)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
1 O15020 (/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 Q62261 (/IDA)
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 Q62261 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q62261 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q9QWN8 (/TAS)
Endosome GO:0005768
A vacuole to which materials ingested by endocytosis are delivered.
1 Q9QWN8 (/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 O15020 (/IDA)
Synaptic vesicle GO:0008021
A secretory organelle, typically 50 nm in diameter, of presynaptic nerve terminals; accumulates in high concentrations of neurotransmitters and secretes these into the synaptic cleft by fusion with the 'active zone' of the presynaptic plasma membrane.
1 Q9QWN8 (/IDA)
Spectrin GO:0008091
Membrane associated dimeric protein (240 and 220 kDa) of erythrocytes. Forms a complex with ankyrin, actin and probably other components of the membrane cytoskeleton, so that there is a mesh of proteins underlying the plasma membrane, potentially restricting the lateral mobility of integral proteins.
1 O15020 (/IDA)
Postsynaptic density GO:0014069
An electron dense network of proteins within and adjacent to the postsynaptic membrane of an asymmetric, neuron-neuron synapse. 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 Q62261 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 Q62261 (/IDA)
Nuclear matrix GO:0016363
The dense fibrillar network lying on the inner side of the nuclear membrane.
1 Q9QWN8 (/TAS)
Cell junction GO:0030054
A cellular component that forms a specialized region of connection between two or more cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
1 O15020 (/IDA)
Axolemma GO:0030673
The portion of the plasma membrane surrounding an axon; it is a specialized trilaminar random mosaic of protein molecules floating within a fluid matrix of highly mobile phospholipid molecules, 7-8 nm in thickness.
1 Q62261 (/IDA)
Cortical cytoskeleton GO:0030863
The portion of the cytoskeleton that lies just beneath the plasma membrane.
1 Q62261 (/IDA)
M band GO:0031430
The midline of aligned thick filaments in a sarcomere; location of specific proteins that link thick filaments. Depending on muscle type the M band consists of different numbers of M lines.
1 Q62261 (/IDA)
Cuticular plate GO:0032437
A dense network of actin filaments found beneath the apical cell surface of hair cells, and into which stereocilia are inserted.
1 Q62261 (/IDA)
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.
1 Q62261 (/ISO)
Perinuclear region of cytoplasm GO:0048471
Cytoplasm situated near, or occurring around, the nucleus.
1 Q9QWN8 (/IDA)
Postsynapse GO:0098794
The part of a synapse that is part of the post-synaptic cell.
1 Q62261 (/ISO)
Actin cytoskeleton of dendritic spine GO:0098938
The actin cytoskeleton that is part of a dendritic spine.
1 Q6XD99 (/IDA)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
1 Q62261 (/ISO)