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:

"
Apolipoprotein C-II
".

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 1: Apolipoprotein C-II

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 13 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
Lipid binding GO:0008289
Interacting selectively and non-covalently with a lipid.
2 P02655 (/IDA) P02655 (/IDA)
Lipid binding GO:0008289
Interacting selectively and non-covalently with a lipid.
2 Q05020 (/ISO) Q05020 (/ISO)
Phospholipase activator activity GO:0016004
Increases the activity of a phospholipase, an enzyme that catalyzes of the hydrolysis of a glycerophospholipid.
2 P02655 (/IDA) P02655 (/IDA)
Phospholipase activator activity GO:0016004
Increases the activity of a phospholipase, an enzyme that catalyzes of the hydrolysis of a glycerophospholipid.
2 Q05020 (/ISO) Q05020 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P02655 (/IMP) P02655 (/IMP)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 Q05020 (/ISO) Q05020 (/ISO)
Phospholipase binding GO:0043274
Interacting selectively and non-covalently with any phospholipase, enzymes that catalyze of the hydrolysis of a glycerophospholipid.
2 P02655 (/IPI) P02655 (/IPI)
Phospholipase binding GO:0043274
Interacting selectively and non-covalently with any phospholipase, enzymes that catalyze of the hydrolysis of a glycerophospholipid.
2 Q05020 (/ISO) Q05020 (/ISO)
Lipase inhibitor activity GO:0055102
Stops, prevents or reduces the activity of a lipase, an enzyme that catalyzes of the hydrolysis of a lipid.
2 P02655 (/IDA) P02655 (/IDA)
Lipase inhibitor activity GO:0055102
Stops, prevents or reduces the activity of a lipase, an enzyme that catalyzes of the hydrolysis of a lipid.
2 Q05020 (/ISO) Q05020 (/ISO)
Lipoprotein lipase activator activity GO:0060230
Binds to and increases the activity of a lipoprotein lipase, an enzyme that catalyzes of the hydrolysis of a lipid within a lipoprotein.
2 P02655 (/IDA) P02655 (/IDA)
Lipoprotein lipase activator activity GO:0060230
Binds to and increases the activity of a lipoprotein lipase, an enzyme that catalyzes of the hydrolysis of a lipid within a lipoprotein.
2 Q05020 (/ISO) Q05020 (/ISO)
Lipoprotein lipase activator activity GO:0060230
Binds to and increases the activity of a lipoprotein lipase, an enzyme that catalyzes of the hydrolysis of a lipid within a lipoprotein.
1 P19034 (/NAS)

There are 44 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
Retinoid metabolic process GO:0001523
The chemical reactions and pathways involving retinoids, any member of a class of isoprenoids that contain or are derived from four prenyl groups linked head-to-tail. Retinoids include retinol and retinal and structurally similar natural derivatives or synthetic compounds, but need not have vitamin A activity.
2 P02655 (/TAS) P02655 (/TAS)
Positive regulation of phospholipase activity GO:0010518
Any process that increases the frequency, rate or extent of phospholipase activity, the hydrolysis of a phospholipid.
2 P02655 (/IDA) P02655 (/IDA)
Positive regulation of phospholipase activity GO:0010518
Any process that increases the frequency, rate or extent of phospholipase activity, the hydrolysis of a phospholipid.
2 Q05020 (/ISO) Q05020 (/ISO)
Positive regulation of triglyceride catabolic process GO:0010898
Any process that increases the frequency, rate, or extent of the chemical reactions and pathways resulting in the breakdown of triglyceride.
2 P02655 (/IDA) P02655 (/IDA)
Positive regulation of triglyceride catabolic process GO:0010898
Any process that increases the frequency, rate, or extent of the chemical reactions and pathways resulting in the breakdown of triglyceride.
2 Q05020 (/ISO) Q05020 (/ISO)
Positive regulation of very-low-density lipoprotein particle remodeling GO:0010902
Any process that increases the rate, frequency or extent of very-low-density lipoprotein particle remodeling. Very-low-density lipoprotein particle remodeling is the acquisition, loss or modification of a protein or lipid within a very-low-density lipoprotein particle, including the hydrolysis of triglyceride by hepatic lipase or lipoprotein lipase and the subsequent loss of free fatty acid.
2 P02655 (/IC) P02655 (/IC)
Negative regulation of very-low-density lipoprotein particle clearance GO:0010916
Any process that decreases the rate, frequency or extent of very-low-density lipoprotein particle clearance. Very-low-density lipoprotein particle clearance is the process in which a very-low-density lipoprotein particle is removed from the blood via receptor-mediated endocytosis and its constituent parts degraded.
2 P02655 (/IDA) P02655 (/IDA)
Negative regulation of very-low-density lipoprotein particle clearance GO:0010916
Any process that decreases the rate, frequency or extent of very-low-density lipoprotein particle clearance. Very-low-density lipoprotein particle clearance is the process in which a very-low-density lipoprotein particle is removed from the blood via receptor-mediated endocytosis and its constituent parts degraded.
2 Q05020 (/ISO) Q05020 (/ISO)
Negative regulation of cholesterol transport GO:0032375
Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of cholesterol into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
2 P02655 (/IMP) P02655 (/IMP)
Negative regulation of cholesterol transport GO:0032375
Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of cholesterol into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
2 Q05020 (/ISO) Q05020 (/ISO)
Cholesterol efflux GO:0033344
The directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
2 P02655 (/IDA) P02655 (/IDA)
Cholesterol efflux GO:0033344
The directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
2 Q05020 (/ISO) Q05020 (/ISO)
Phospholipid efflux GO:0033700
The directed movement of a phospholipid out of a cell or organelle.
2 P02655 (/IDA) P02655 (/IDA)
Phospholipid efflux GO:0033700
The directed movement of a phospholipid out of a cell or organelle.
2 Q05020 (/ISO) Q05020 (/ISO)
Triglyceride-rich lipoprotein particle remodeling GO:0034370
The acquisition, loss or modification of a protein or lipid within a triglyceride-rich lipoprotein particle, including the hydrolysis of triglyceride by lipoprotein lipase, with the subsequent loss of free fatty acid, and the transfer of cholesterol esters to a triglyceride-rich lipoprotein particle by cholesteryl ester transfer protein (CETP), with the simultaneous transfer of triglyceride from a triglyceride-rich lipoprotein particle.
2 P02655 (/TAS) P02655 (/TAS)
Chylomicron remodeling GO:0034371
The acquisition, loss or modification of a protein or lipid within a chylomicron, including the hydrolysis of triglyceride by lipoprotein lipase and the subsequent loss of free fatty acid.
2 P02655 (/IC) P02655 (/IC)
Chylomicron remodeling GO:0034371
The acquisition, loss or modification of a protein or lipid within a chylomicron, including the hydrolysis of triglyceride by lipoprotein lipase and the subsequent loss of free fatty acid.
2 P02655 (/TAS) P02655 (/TAS)
Very-low-density lipoprotein particle remodeling GO:0034372
The acquisition, loss or modification of a protein or lipid within a very-low-density lipoprotein particle, including the hydrolysis of triglyceride by hepatic lipase or lipoprotein lipase and the subsequent loss of free fatty acid.
2 P02655 (/TAS) P02655 (/TAS)
High-density lipoprotein particle remodeling GO:0034375
The acquisition, loss or modification of a protein or lipid within a high-density lipoprotein particle, including the hydrolysis of triglyceride by hepatic lipase, with the subsequent loss of free fatty acid, and the transfer of cholesterol esters from LDL to a triglyceride-rich lipoprotein particle by cholesteryl ester transfer protein (CETP), with the simultaneous transfer of triglyceride to LDL.
2 P02655 (/TAS) P02655 (/TAS)
Chylomicron assembly GO:0034378
The non-covalent aggregation and arrangement of proteins and lipids in the intestine to form a chylomicron.
2 P02655 (/TAS) P02655 (/TAS)
Chylomicron remnant clearance GO:0034382
The process in which a chylomicron remnant is removed from the blood via receptor-mediated endocytosis into liver cells and its constituent parts degraded.
2 P02655 (/IDA) P02655 (/IDA)
Chylomicron remnant clearance GO:0034382
The process in which a chylomicron remnant is removed from the blood via receptor-mediated endocytosis into liver cells and its constituent parts degraded.
2 Q05020 (/ISO) Q05020 (/ISO)
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.
2 P02655 (/IMP) P02655 (/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.
2 Q05020 (/ISO) Q05020 (/ISO)
Cholesterol homeostasis GO:0042632
Any process involved in the maintenance of an internal steady state of cholesterol within an organism or cell.
2 P02655 (/IC) P02655 (/IC)
Lipoprotein transport GO:0042953
The directed movement of any conjugated, water-soluble protein in which the nonprotein group consists of a lipid or lipids, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
2 Q05020 (/ISO) Q05020 (/ISO)
Reverse cholesterol transport GO:0043691
The directed movement of peripheral cell cholesterol, cholest-5-en-3-beta-ol, towards the liver for catabolism.
2 P02655 (/IC) P02655 (/IC)
Positive regulation of fatty acid biosynthetic process GO:0045723
Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of fatty acids.
2 P02655 (/IDA) P02655 (/IDA)
Positive regulation of fatty acid biosynthetic process GO:0045723
Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of fatty acids.
2 Q05020 (/ISO) Q05020 (/ISO)
Negative regulation of lipid metabolic process GO:0045833
Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways involving lipids.
2 P02655 (/IDA) P02655 (/IDA)
Negative regulation of lipid metabolic process GO:0045833
Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways involving lipids.
2 Q05020 (/ISO) Q05020 (/ISO)
Negative regulation of receptor-mediated endocytosis GO:0048261
Any process that stops, prevents, or reduces the frequency, rate or extent of receptor mediated endocytosis, the uptake of external materials by cells, utilizing receptors to ensure specificity of transport.
2 P02655 (/IDA) P02655 (/IDA)
Negative regulation of receptor-mediated endocytosis GO:0048261
Any process that stops, prevents, or reduces the frequency, rate or extent of receptor mediated endocytosis, the uptake of external materials by cells, utilizing receptors to ensure specificity of transport.
2 Q05020 (/ISO) Q05020 (/ISO)
Positive regulation of lipoprotein lipase activity GO:0051006
Any process that activates or increases the activity of the enzyme lipoprotein lipase.
2 P02655 (/IDA) P02655 (/IDA)
Positive regulation of lipoprotein lipase activity GO:0051006
Any process that activates or increases the activity of the enzyme lipoprotein lipase.
2 Q05020 (/ISO) Q05020 (/ISO)
Positive regulation of phospholipid catabolic process GO:0060697
Any process that increases the rate, frequency, or extent of phospholipid catabolism, the chemical reactions and pathways resulting in the breakdown of phospholipids, any lipid containing phosphoric acid as a mono- or diester.
2 P02655 (/IDA) P02655 (/IDA)
Positive regulation of phospholipid catabolic process GO:0060697
Any process that increases the rate, frequency, or extent of phospholipid catabolism, the chemical reactions and pathways resulting in the breakdown of phospholipids, any lipid containing phosphoric acid as a mono- or diester.
2 Q05020 (/ISO) Q05020 (/ISO)
Triglyceride homeostasis GO:0070328
Any process involved in the maintenance of an internal steady state of triglyceride within an organism or cell.
2 P02655 (/IMP) P02655 (/IMP)
Triglyceride homeostasis GO:0070328
Any process involved in the maintenance of an internal steady state of triglyceride within an organism or cell.
2 Q05020 (/ISO) Q05020 (/ISO)
Positive regulation of triglyceride catabolic process GO:0010898
Any process that increases the frequency, rate, or extent of the chemical reactions and pathways resulting in the breakdown of triglyceride.
1 P19034 (/NAS)
Response to drug GO:0042493
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 drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
1 G3V8D4 (/IEP)
Lipoprotein transport GO:0042953
The directed movement of any conjugated, water-soluble protein in which the nonprotein group consists of a lipid or lipids, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
1 G3V8D4 (/IDA)
Positive regulation of fatty acid biosynthetic process GO:0045723
Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of fatty acids.
1 P19034 (/NAS)
Positive regulation of lipoprotein lipase activity GO:0051006
Any process that activates or increases the activity of the enzyme lipoprotein lipase.
1 P19034 (/NAS)

There are 16 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.
4 P02655 (/TAS) P02655 (/TAS) Q05020 (/TAS) Q05020 (/TAS)
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.
2 P02655 (/NAS) P02655 (/NAS)
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 P02655 (/IDA) P02655 (/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.
2 Q05020 (/ISO) Q05020 (/ISO)
Early endosome GO:0005769
A membrane-bounded organelle that receives incoming material from primary endocytic vesicles that have been generated by clathrin-dependent and clathrin-independent endocytosis; vesicles fuse with the early endosome to deliver cargo for sorting into recycling or degradation pathways.
2 P02655 (/TAS) P02655 (/TAS)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
2 Q05020 (/TAS) Q05020 (/TAS)
Very-low-density lipoprotein particle GO:0034361
A triglyceride-rich lipoprotein particle that is typically composed of APOB100, APOE and APOCs and has a density of about 1.006 g/ml and a diameter of between 20-80 nm. It is found in blood and transports endogenous products (newly synthesized cholesterol and triglycerides) from the liver.
2 P02655 (/IDA) P02655 (/IDA)
Very-low-density lipoprotein particle GO:0034361
A triglyceride-rich lipoprotein particle that is typically composed of APOB100, APOE and APOCs and has a density of about 1.006 g/ml and a diameter of between 20-80 nm. It is found in blood and transports endogenous products (newly synthesized cholesterol and triglycerides) from the liver.
2 Q05020 (/ISO) Q05020 (/ISO)
Low-density lipoprotein particle GO:0034362
A lipoprotein particle, rich in cholesterol esters and low in triglycerides that is typically composed of APOB100 and APOE and has a density of 1.02-1.06 g/ml and a diameter of between 20-25 nm. LDL particles are formed from VLDL particles (via IDL) by the loss of triglyceride and gain of cholesterol ester. They transport endogenous cholesterol (and to some extent triglycerides) from peripheral tissues back to the liver.
2 P02655 (/IDA) P02655 (/IDA)
Low-density lipoprotein particle GO:0034362
A lipoprotein particle, rich in cholesterol esters and low in triglycerides that is typically composed of APOB100 and APOE and has a density of 1.02-1.06 g/ml and a diameter of between 20-25 nm. LDL particles are formed from VLDL particles (via IDL) by the loss of triglyceride and gain of cholesterol ester. They transport endogenous cholesterol (and to some extent triglycerides) from peripheral tissues back to the liver.
2 Q05020 (/ISO) Q05020 (/ISO)
Intermediate-density lipoprotein particle GO:0034363
A triglyceride-rich lipoprotein particle that typically contains APOB100, APOE and APOCs and has a density of 1.006-1.019 g/ml and a diameter of between 25-30 nm. IDL particles are found in blood and are formed by the delipidation of very-low-density lipoprotein particles (VLDL). IDL particles are removed from blood by the liver, following binding to the APOE receptor, or are converted to low-density lipoprotein (LDL).
2 P02655 (/IDA) P02655 (/IDA)
Intermediate-density lipoprotein particle GO:0034363
A triglyceride-rich lipoprotein particle that typically contains APOB100, APOE and APOCs and has a density of 1.006-1.019 g/ml and a diameter of between 25-30 nm. IDL particles are found in blood and are formed by the delipidation of very-low-density lipoprotein particles (VLDL). IDL particles are removed from blood by the liver, following binding to the APOE receptor, or are converted to low-density lipoprotein (LDL).
2 Q05020 (/ISO) Q05020 (/ISO)
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).
2 P02655 (/IDA) P02655 (/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).
2 Q05020 (/ISO) Q05020 (/ISO)
Chylomicron GO:0042627
A large lipoprotein particle (diameter 75-1200 nm) composed of a central core of triglycerides and cholesterol surrounded by a protein-phospholipid coating. The proteins include one molecule of apolipoprotein B-48 and may include a variety of apolipoproteins, including APOAs, APOCs and APOE. Chylomicrons are found in blood or lymph and carry lipids from the intestines into other body tissues.
2 P02655 (/IDA) P02655 (/IDA)
Chylomicron GO:0042627
A large lipoprotein particle (diameter 75-1200 nm) composed of a central core of triglycerides and cholesterol surrounded by a protein-phospholipid coating. The proteins include one molecule of apolipoprotein B-48 and may include a variety of apolipoproteins, including APOAs, APOCs and APOE. Chylomicrons are found in blood or lymph and carry lipids from the intestines into other body tissues.
2 Q05020 (/ISO) Q05020 (/ISO)