The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was named:

"
TolB, C-terminal 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 23: Serum paraoxonase/arylesterase 2

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 22 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
Arylesterase activity GO:0004064
Catalysis of the reaction: a phenyl acetate + H2O = a phenol + acetate.
6 P27169 (/IDA) P27170 (/IDA) Q15166 (/IDA) Q15166 (/IDA) Q15166 (/IDA) Q68FP2 (/IDA)
Arylesterase activity GO:0004064
Catalysis of the reaction: a phenyl acetate + H2O = a phenol + acetate.
4 P27169 (/NAS) Q15166 (/NAS) Q15166 (/NAS) Q15166 (/NAS)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
4 P27169 (/IDA) Q15166 (/IDA) Q15166 (/IDA) Q15166 (/IDA)
Aryldialkylphosphatase activity GO:0004063
Catalysis of the reaction: aryl dialkyl phosphate + H2O = dialkyl phosphate + an aryl alcohol.
3 P27170 (/ISS) P52430 (/ISS) P55159 (/ISS)
Arylesterase activity GO:0004064
Catalysis of the reaction: a phenyl acetate + H2O = a phenol + acetate.
3 P27170 (/ISS) P52430 (/ISS) P55159 (/ISS)
Arylesterase activity GO:0004064
Catalysis of the reaction: a phenyl acetate + H2O = a phenol + acetate.
3 Q15165 (/TAS) Q15165 (/TAS) Q15165 (/TAS)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
3 P27170 (/ISS) P52430 (/ISS) P55159 (/ISS)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
3 Q15165 (/IDA) Q15165 (/IDA) Q15165 (/IDA)
Aryldialkylphosphatase activity GO:0004063
Catalysis of the reaction: aryl dialkyl phosphate + H2O = dialkyl phosphate + an aryl alcohol.
2 P27169 (/IDA) P55159 (/IDA)
Arylesterase activity GO:0004064
Catalysis of the reaction: a phenyl acetate + H2O = a phenol + acetate.
2 P52430 (/ISO) Q62087 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P52430 (/ISO) Q62087 (/ISO)
Aryldialkylphosphatase activity GO:0004063
Catalysis of the reaction: aryl dialkyl phosphate + H2O = dialkyl phosphate + an aryl alcohol.
1 P52430 (/ISO)
Arylesterase activity GO:0004064
Catalysis of the reaction: a phenyl acetate + H2O = a phenol + acetate.
1 P52430 (/IMP)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
1 P27169 (/IDA)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
1 P52430 (/ISO)
Phospholipid binding GO:0005543
Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester.
1 P27169 (/IDA)
Phospholipid binding GO:0005543
Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester.
1 P52430 (/ISO)
High-density lipoprotein particle binding GO:0008035
Interacting selectively and non-covalently with high-density lipoprotein particle, a lipoprotein particle with a high density (typically 1.063-1.21 g/ml) and a diameter of 5-10 nm that contains APOAs and may contain APOCs and APOE.
1 P52430 (/TAS)
Antioxidant activity GO:0016209
Inhibition of the reactions brought about by dioxygen (O2) or peroxides. Usually the antioxidant is effective because it can itself be more easily oxidized than the substance protected. The term is often applied to components that can trap free radicals, thereby breaking the chain reaction that normally leads to extensive biological damage.
1 P27170 (/IDA)
3,4-dihydrocoumarin hydrolase activity GO:0018733
Catalysis of the reaction: 3,4-dihydrocoumarin + H2O = 3-(2-hydroxyphenyl) propionate.
1 Q68FP2 (/IDA)
3,4-dihydrocoumarin hydrolase activity GO:0018733
Catalysis of the reaction: 3,4-dihydrocoumarin + H2O = 3-(2-hydroxyphenyl) propionate.
1 Q62087 (/ISO)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
1 Q62086 (/ISO)

There are 38 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
Lipoxygenase pathway GO:0019372
The chemical reactions and pathways by which an unsaturated fatty acid (such as arachidonic acid or linolenic acid) is converted to other compounds, and in which the first step is hydroperoxide formation catalyzed by lipoxygenase.
7 P27169 (/TAS) Q15165 (/TAS) Q15165 (/TAS) Q15165 (/TAS) Q15166 (/TAS) Q15166 (/TAS) Q15166 (/TAS)
Aromatic compound catabolic process GO:0019439
The chemical reactions and pathways resulting in the breakdown of aromatic compounds, any substance containing an aromatic carbon ring.
7 P27169 (/IDA) Q15165 (/IDA) Q15165 (/IDA) Q15165 (/IDA) Q15166 (/IDA) Q15166 (/IDA) Q15166 (/IDA)
Carboxylic acid catabolic process GO:0046395
The chemical reactions and pathways resulting in the breakdown of carboxylic acids, any organic acid containing one or more carboxyl (-COOH) groups.
4 P27169 (/IDA) Q15166 (/IDA) Q15166 (/IDA) Q15166 (/IDA)
Aromatic compound catabolic process GO:0019439
The chemical reactions and pathways resulting in the breakdown of aromatic compounds, any substance containing an aromatic carbon ring.
3 P52430 (/ISO) Q62086 (/ISO) Q62087 (/ISO)
Carboxylic acid catabolic process GO:0046395
The chemical reactions and pathways resulting in the breakdown of carboxylic acids, any organic acid containing one or more carboxyl (-COOH) groups.
2 P52430 (/ISO) Q62087 (/ISO)
Lipid metabolic process GO:0006629
The chemical reactions and pathways involving lipids, compounds soluble in an organic solvent but not, or sparingly, in an aqueous solvent. Includes fatty acids; neutral fats, other fatty-acid esters, and soaps; long-chain (fatty) alcohols and waxes; sphingoids and other long-chain bases; glycolipids, phospholipids and sphingolipids; and carotenes, polyprenols, sterols, terpenes and other isoprenoids.
1 P55159 (/IEP)
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.
1 Q6AXM8 (/IEP)
Mechanosensory behavior GO:0007638
Behavior that is dependent upon the sensation of a mechanical stimulus.
1 O01811 (/IGI)
Mechanosensory behavior GO:0007638
Behavior that is dependent upon the sensation of a mechanical stimulus.
1 O01811 (/IMP)
Blood circulation GO:0008015
The flow of blood through the body of an animal, enabling the transport of nutrients to the tissues and the removal of waste products.
1 P52430 (/TAS)
Cholesterol metabolic process GO:0008203
The chemical reactions and pathways involving cholesterol, cholest-5-en-3 beta-ol, the principal sterol of vertebrates and the precursor of many steroids, including bile acids and steroid hormones. It is a component of the plasma membrane lipid bilayer and of plasma lipoproteins and can be found in all animal tissues.
1 P52430 (/IMP)
Cholesterol metabolic process GO:0008203
The chemical reactions and pathways involving cholesterol, cholest-5-en-3 beta-ol, the principal sterol of vertebrates and the precursor of many steroids, including bile acids and steroid hormones. It is a component of the plasma membrane lipid bilayer and of plasma lipoproteins and can be found in all animal tissues.
1 P52430 (/TAS)
Response to mechanical stimulus GO:0009612
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 mechanical stimulus.
1 O01811 (/IMP)
Response to toxic substance GO:0009636
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 toxic stimulus.
1 P52430 (/IMP)
Phenylacetate catabolic process GO:0010124
The chemical reactions and pathways resulting in the breakdown of phenylacetate.
1 Q68FP2 (/IDA)
Phenylacetate catabolic process GO:0010124
The chemical reactions and pathways resulting in the breakdown of phenylacetate.
1 Q62087 (/ISO)
Positive regulation of cholesterol efflux GO:0010875
Any process that increases the frequency, rate or extent of cholesterol efflux. Cholesterol efflux is the directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
1 P27169 (/IDA)
Positive regulation of cholesterol efflux GO:0010875
Any process that increases the frequency, rate or extent of cholesterol efflux. Cholesterol efflux is the directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
1 P52430 (/ISO)
Response to nutrient levels GO:0031667
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 stimulus reflecting the presence, absence, or concentration of nutrients.
1 P55159 (/IEP)
Positive regulation of transporter activity GO:0032411
Any process that activates or increases the activity of a transporter.
1 P27169 (/IDA)
Positive regulation of transporter activity GO:0032411
Any process that activates or increases the activity of a transporter.
1 P52430 (/ISO)
Negative regulation of superoxide anion generation GO:0032929
Any process that stops, prevents, or reduces the frequency, rate or extent of enzymatic generation of superoxide by a cell.
1 Q62087 (/IDA)
Coumarin catabolic process GO:0046226
The chemical reactions and pathways resulting in the breakdown of coumarins, compounds derived from the phenylacrylic skeleton of cinnamic acids.
1 Q68FP2 (/IDA)
Coumarin catabolic process GO:0046226
The chemical reactions and pathways resulting in the breakdown of coumarins, compounds derived from the phenylacrylic skeleton of cinnamic acids.
1 Q62087 (/ISO)
Organophosphate catabolic process GO:0046434
The chemical reactions and pathways resulting in the breakdown of organophosphates, any phosphate-containing organic compound.
1 P27169 (/IDA)
Organophosphate catabolic process GO:0046434
The chemical reactions and pathways resulting in the breakdown of organophosphates, any phosphate-containing organic compound.
1 P52430 (/ISO)
Phosphatidylcholine metabolic process GO:0046470
The chemical reactions and pathways involving phosphatidylcholines, any of a class of glycerophospholipids in which the phosphatidyl group is esterified to the hydroxyl group of choline. They are important constituents of cell membranes.
1 P27169 (/IDA)
Phosphatidylcholine metabolic process GO:0046470
The chemical reactions and pathways involving phosphatidylcholines, any of a class of glycerophospholipids in which the phosphatidyl group is esterified to the hydroxyl group of choline. They are important constituents of cell membranes.
1 P52430 (/ISO)
Response to organophosphorus GO:0046683
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 organophosphorus stimulus. Organophosphorus is a compound containing phosphorus bound to an organic molecule; several organophosphorus compounds are used as insecticides, and they are highly toxic cholinesterase inhibitors.
1 P27170 (/IDA)
Detection of mechanical stimulus involved in sensory perception of touch GO:0050976
The series of events involved in the perception of touch in which a mechanical stimulus is received and converted into a molecular signal.
1 O01811 (/IGI)
Detection of mechanical stimulus involved in sensory perception of touch GO:0050976
The series of events involved in the perception of touch in which a mechanical stimulus is received and converted into a molecular signal.
1 O01811 (/IMP)
Positive regulation of binding GO:0051099
Any process that activates or increases the rate or extent of binding, the selective interaction of a molecule with one or more specific sites on another molecule.
1 P27169 (/IDA)
Positive regulation of binding GO:0051099
Any process that activates or increases the rate or extent of binding, the selective interaction of a molecule with one or more specific sites on another molecule.
1 P52430 (/ISO)
Response to fatty acid GO:0070542
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 fatty acid stimulus.
1 P55159 (/IEP)
Response to fluoride GO:1902617
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 fluoride stimulus.
1 P55159 (/IDA)
Response to fluoride GO:1902617
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 fluoride stimulus.
1 P52430 (/ISO)
Positive regulation of detection of mechanical stimulus involved in sensory perception of touch GO:1905789
Any process that activates or increases the frequency, rate or extent of detection of mechanical stimulus involved in sensory perception of touch.
1 O01811 (/IGI)
Positive regulation of mechanosensory behavior GO:1905792
Any process that activates or increases the frequency, rate or extent of mechanosensory behavior.
1 O01811 (/IGI)

There are 21 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
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
7 P27169 (/TAS) Q15165 (/TAS) Q15165 (/TAS) Q15165 (/TAS) Q15166 (/TAS) Q15166 (/TAS) Q15166 (/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.
4 P27169 (/HDA) Q15166 (/HDA) Q15166 (/HDA) Q15166 (/HDA)
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.
3 P27169 (/IDA) P55159 (/IDA) Q68FP2 (/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.
3 Q15165 (/IDA) Q15165 (/IDA) Q15165 (/IDA)
Intracellular membrane-bounded organelle GO:0043231
Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
3 P55159 (/IDA) Q68FP2 (/IDA) Q6AXM8 (/IDA)
Intracellular membrane-bounded organelle GO:0043231
Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
3 P52430 (/ISO) Q62086 (/ISO) Q62087 (/ISO)
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.
2 P52430 (/ISO) Q62087 (/ISO)
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
1 P27169 (/NAS)
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 Q6AXM8 (/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 Q62086 (/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 Q6AXM8 (/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 Q62086 (/ISO)
Lysosome GO:0005764
A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
1 Q6AXM8 (/IDA)
Lysosome GO:0005764
A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
1 Q62086 (/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 Q62086 (/ISO)
High-density lipoprotein particle GO:0034364
A lipoprotein particle with a high density (typically 1.063-1.21 g/ml) and a diameter of 5-10 nm that contains APOAs and may contain APOCs and APOE; found in blood and carries lipids from body tissues to the liver as part of the reverse cholesterol transport process.
1 P27169 (/IDA)
High-density lipoprotein particle GO:0034364
A lipoprotein particle with a high density (typically 1.063-1.21 g/ml) and a diameter of 5-10 nm that contains APOAs and may contain APOCs and APOE; found in blood and carries lipids from body tissues to the liver as part of the reverse cholesterol transport process.
1 P52430 (/ISO)
High-density lipoprotein particle GO:0034364
A lipoprotein particle with a high density (typically 1.063-1.21 g/ml) and a diameter of 5-10 nm that contains APOAs and may contain APOCs and APOE; found in blood and carries lipids from body tissues to the liver as part of the reverse cholesterol transport process.
1 P27169 (/TAS)
Spherical high-density lipoprotein particle GO:0034366
A mature high-density lipoprotein (HDL) particle, converted from discoidal HDL particles following the esterification of cholesterol in the particle by phosphatidylcholine-sterol O-acyltransferase (lecithin cholesterol acyltransferase; LCAT).
1 P27169 (/IDA)
Spherical high-density lipoprotein particle GO:0034366
A mature high-density lipoprotein (HDL) particle, converted from discoidal HDL particles following the esterification of cholesterol in the particle by phosphatidylcholine-sterol O-acyltransferase (lecithin cholesterol acyltransferase; LCAT).
1 P52430 (/ISO)
Blood microparticle GO:0072562
A phospholipid microvesicle that is derived from any of several cell types, such as platelets, blood cells, endothelial cells, or others, and contains membrane receptors as well as other proteins characteristic of the parental cell. Microparticles are heterogeneous in size, and are characterized as microvesicles free of nucleic acids.
1 P27169 (/HDA)
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