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:

"
Severin
".

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 5391: Protein transport protein Sec23A

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 4 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).
5 P15303 (/IPI) Q01405 (/IPI) Q15436 (/IPI) Q15437 (/IPI) Q9D662 (/IPI)
GTPase activator activity GO:0005096
Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP.
3 A0A0B4K5Z8 (/ISS) A0A0B4K6T4 (/ISS) Q9VNF8 (/ISS)
GTPase activator activity GO:0005096
Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP.
2 O74873 (/ISO) O94672 (/ISO)
GTPase activator activity GO:0005096
Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP.
1 P15303 (/IDA)

There are 36 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 neurocranium morphogenesis GO:0048702
The process in which the anatomical structures of the neurocranium are generated and organized during the embryonic phase. The neurocranium is the portion of the vertebrate skull surrounding the brain.
4 A0A0R4ILW9 (/IMP) F1R7W8 (/IMP) Q6AZ98 (/IMP) Q7SZE5 (/IMP)
Cartilage development GO:0051216
The process whose specific outcome is the progression of a cartilage element over time, from its formation to the mature structure. Cartilage elements are skeletal elements that consist of connective tissue dominated by extracellular matrix containing collagen type II and large amounts of proteoglycan, particularly chondroitin sulfate.
4 A0A0R4ILW9 (/IMP) F1R7W8 (/IMP) Q6AZ98 (/IMP) Q7SZE5 (/IMP)
Positive regulation of extracellular matrix constituent secretion GO:0003331
Any process that increases the rate, frequency, or extent of the controlled release of molecules that form the extracellular matrix, including carbohydrates and glycoproteins by a cell or a group of cells.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Regulation of COPII vesicle coating GO:0003400
Any process that modulates the rate, frequency, or extent of the addition of COPII proteins and adaptor proteins to ER membranes during the formation of transport vesicles, forming a vesicle coat.
3 A0A0B4K5Z8 (/ISS) A0A0B4K6T4 (/ISS) Q9VNF8 (/ISS)
Endoplasmic reticulum organization GO:0007029
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the endoplasmic reticulum.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Golgi organization GO:0007030
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the Golgi apparatus.
3 A0A0B4K5Z8 (/IGI) A0A0B4K6T4 (/IGI) Q9VNF8 (/IGI)
Golgi organization GO:0007030
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the Golgi apparatus.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Regulation of cell shape GO:0008360
Any process that modulates the surface configuration of a cell.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Larval chitin-based cuticle development GO:0008363
Synthesis and deposition of a chitin-based larval cuticle. The insect larval cuticle is a secretion from epidermal cells that is shed at each molt. An example of this is found in Drosophila melanogaster.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Muscle attachment GO:0016203
The developmental process in which a skeletal muscle attaches to its target (such as bone or body wall).
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Positive regulation of cell-cell adhesion GO:0022409
Any process that activates or increases the rate or extent of cell adhesion to another cell.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Maintenance of cell polarity GO:0030011
The maintenance of established anisotropic intracellular organization or cell growth patterns.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Protein localization to cell surface GO:0034394
A process in which a protein is transported to, or maintained in, a location within the external part of the cell wall and/or plasma membrane.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Lumen formation, open tracheal system GO:0035149
Creation of the central hole of a tube in an open tracheal system through which gases flow.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Chitin-based larval cuticle pattern formation GO:0035293
The process that gives rise to the patterns of cell differentiation in the chitin-based larval cuticle. An example of this is found in Drosophila melanogaster.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Chitin-based cuticle development GO:0040003
Synthesis and deposition of a chitin-based noncellular, hardened, or membranous secretion from an epithelial sheet. An example of this process is found in Drosophila melanogaster.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Positive regulation of GTPase activity GO:0043547
Any process that activates or increases the activity of a GTPase.
3 A0A0B4K5Z8 (/ISS) A0A0B4K6T4 (/ISS) Q9VNF8 (/ISS)
Positive regulation of cuticle pigmentation GO:0048081
Any process that activates or increases the frequency, rate or extent of establishment of a pattern of pigment in the cuticle of an organism.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Neuron projection morphogenesis GO:0048812
The process in which the anatomical structures of a neuron projection are generated and organized. A neuron projection is any process extending from a neural cell, such as axons or dendrites.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Erythrocyte development GO:0048821
The process whose specific outcome is the progression of an erythrocyte over time, from its formation to the mature structure.
3 A0A0R4ILW9 (/IMP) F1R7W8 (/IMP) Q6AZ98 (/IMP)
Positive regulation of dendrite morphogenesis GO:0050775
Any process that activates or increases the frequency, rate or extent of dendrite morphogenesis.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Basement membrane organization GO:0071711
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the basement membrane.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Protein targeting to plasma membrane GO:0072661
The process of directing proteins towards the plasma membrane; usually uses signals contained within the protein.
3 A0A0B4K5Z8 (/IMP) A0A0B4K6T4 (/IMP) Q9VNF8 (/IMP)
Intracellular protein transport GO:0006886
The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell.
2 O74873 (/IC) O94672 (/IC)
ER 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.
2 O74873 (/ISO) O94672 (/ISO)
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.
2 Q15436 (/TAS) Q15437 (/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 O74873 (/ISO) O94672 (/ISO)
Antigen processing and presentation of peptide antigen via MHC class I GO:0002474
The process in which an antigen-presenting cell expresses a peptide antigen on its cell surface in association with an MHC class I protein complex. Class I here refers to classical class I molecules.
1 Q15436 (/TAS)
Regulation of COPII vesicle coating GO:0003400
Any process that modulates the rate, frequency, or extent of the addition of COPII proteins and adaptor proteins to ER membranes during the formation of transport vesicles, forming a vesicle coat.
1 P15303 (/IDA)
Intracellular protein transport GO:0006886
The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell.
1 Q01405 (/TAS)
ER 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.
1 Q15436 (/TAS)
Macroautophagy GO:0016236
The major inducible pathway for the general turnover of cytoplasmic constituents in eukaryotic cells, it is also responsible for the degradation of active cytoplasmic enzymes and organelles during nutrient starvation. Macroautophagy involves the formation of double-membrane-bounded autophagosomes which enclose the cytoplasmic constituent targeted for degradation in a membrane-bounded structure. Autophagosomes then fuse with a lysosome (or vacuole) releasing single-membrane-bounded autophagic bodies that are then degraded within the lysosome (or vacuole). Though once thought to be a purely non-selective process, it appears that some types of macroautophagy, e.g. macropexophagy, macromitophagy, may involve selective targeting of the targets to be degraded.
1 P15303 (/IMP)
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 Q15436 (/TAS)
Pectoral fin morphogenesis GO:0035138
The process in which the anatomical structures of the pectoral fin are generated and organized. Pectoral fins are bilaterally paired fins mounted laterally and located behind the gill covers of fish. These fins are used for lateral mobility and propulsion.
1 Q7SZE5 (/IMP)
Positive regulation of GTPase activity GO:0043547
Any process that activates or increases the activity of a GTPase.
1 P15303 (/IDA)
COPII vesicle coating GO:0048208
The addition of COPII proteins and adaptor proteins to ER membranes during the formation of transport vesicles, forming a vesicle coat.
1 Q15436 (/TAS)

There are 25 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
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
4 A0A0B4K5Z8 (/IDA) A0A0B4K6T4 (/IDA) Q15437 (/IDA) Q9VNF8 (/IDA)
Endoplasmic reticulum exit site GO:0070971
An endoplasmic reticulum part at which COPII-coated vesicles are produced.
4 A0A0B4K5Z8 (/IDA) A0A0B4K6T4 (/IDA) Q9U2Z1 (/IDA) Q9VNF8 (/IDA)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
3 Q3SZN2 (/ISS) Q5R5G2 (/ISS) Q9D662 (/ISS)
Golgi apparatus GO:0005794
A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
3 Q3SZN2 (/ISS) Q5R5G2 (/ISS) Q9D662 (/ISS)
Golgi stack GO:0005795
The set of thin, flattened membrane-bounded compartments, called cisternae, that form the central portion of the Golgi complex. The stack usually comprises cis, medial, and trans cisternae; the cis- and trans-Golgi networks are not considered part of the stack.
3 A0A0B4K5Z8 (/IDA) A0A0B4K6T4 (/IDA) Q9VNF8 (/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 F4JUM1 (/IDA) O94672 (/IDA) Q8H0S3 (/IDA)
COPII vesicle coat GO:0030127
One of two multimeric complexes that forms a membrane vesicle coat. COPII is best characterized in S. cerevisiae, where the subunits are called Sar1p, Sec13p, Sec31p, Sec23p, and Sec24p. Vesicles with COPII coats are found associated with endoplasmic reticulum (ER) membranes at steady state.
3 A0A0B4K5Z8 (/ISS) A0A0B4K6T4 (/ISS) Q9VNF8 (/ISS)
ER to Golgi transport vesicle GO:0030134
A vesicle that mediates transport from the endoplasmic reticulum to the Golgi complex; bears a coat formed of the COPII coat complex proteins; such vesicles found associated with endoplasmic reticulum (ER) membranes at steady state, and are involved in ER to Golgi (anterograde) vesicle transport.
3 A0A0B4K5Z8 (/TAS) A0A0B4K6T4 (/TAS) Q9VNF8 (/TAS)
Endoplasmic reticulum membrane GO:0005789
The lipid bilayer surrounding the endoplasmic reticulum.
2 Q01405 (/TAS) Q15436 (/TAS)
COPII vesicle coat GO:0030127
One of two multimeric complexes that forms a membrane vesicle coat. COPII is best characterized in S. cerevisiae, where the subunits are called Sar1p, Sec13p, Sec31p, Sec23p, and Sec24p. Vesicles with COPII coats are found associated with endoplasmic reticulum (ER) membranes at steady state.
2 O74873 (/ISO) O94672 (/ISO)
Perinuclear region of cytoplasm GO:0048471
Cytoplasm situated near, or occurring around, the nucleus.
2 Q01405 (/IDA) Q9D662 (/IDA)
Golgi membrane GO:0000139
The lipid bilayer surrounding any of the compartments of the Golgi apparatus.
1 Q01405 (/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.
1 O94672 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q5BGR9 (/IDA)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
1 Q9D662 (/ISO)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
1 Q15436 (/TAS)
Golgi apparatus GO:0005794
A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
1 Q15437 (/IDA)
Golgi apparatus GO:0005794
A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
1 Q9D662 (/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 Q15436 (/TAS)
Endomembrane system GO:0012505
A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles.
1 Q15437 (/IDA)
Endomembrane system GO:0012505
A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles.
1 Q9D662 (/ISO)
ER to Golgi transport vesicle membrane GO:0012507
The lipid bilayer surrounding a vesicle transporting substances from the endoplasmic reticulum to the Golgi.
1 Q15436 (/TAS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 Q15437 (/TAS)
COPII vesicle coat GO:0030127
One of two multimeric complexes that forms a membrane vesicle coat. COPII is best characterized in S. cerevisiae, where the subunits are called Sar1p, Sec13p, Sec31p, Sec23p, and Sec24p. Vesicles with COPII coats are found associated with endoplasmic reticulum (ER) membranes at steady state.
1 P15303 (/IDA)
ER to Golgi transport vesicle GO:0030134
A vesicle that mediates transport from the endoplasmic reticulum to the Golgi complex; bears a coat formed of the COPII coat complex proteins; such vesicles found associated with endoplasmic reticulum (ER) membranes at steady state, and are involved in ER to Golgi (anterograde) vesicle transport.
1 Q01405 (/IDA)