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 11: Apolipoprotein M

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 8 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
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.
2 O95445 (/IDA) Q9Z1R3 (/IDA)
Lipid transporter activity GO:0005319
Enables the directed movement of lipids into, out of or within a cell, or between cells.
1 O95445 (/IDA)
Lipid transporter activity GO:0005319
Enables the directed movement of lipids into, out of or within a cell, or between cells.
1 Q9Z1R3 (/ISO)
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).
1 Q9Z1R3 (/IPI)
Phospholipid binding GO:0005543
Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester.
1 O95445 (/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 Q9Z1R3 (/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 Q9Z1R3 (/ISS)
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 Q9Z1R3 (/ISO)

There are 17 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
Cholesterol efflux GO:0033344
The directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
2 O95445 (/IMP) Q9Z1R3 (/IMP)
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 O95445 (/IMP) Q9Z1R3 (/IMP)
Negative regulation of plasma lipoprotein oxidation GO:0034445
Any process that stops, prevents, or reduces the frequency, rate or extent of lipoprotein particle oxidation, occurring in the blood plasma.
2 O95445 (/IDA) Q9Z1R3 (/IDA)
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.
1 O95445 (/TAS)
Response to glucose GO:0009749
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 glucose stimulus.
1 P14630 (/IEP)
Cholesterol efflux GO:0033344
The directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
1 O95445 (/IDA)
Cholesterol efflux GO:0033344
The directed movement of cholesterol, cholest-5-en-3-beta-ol, out of a cell or organelle.
1 Q9Z1R3 (/ISO)
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.
1 Q9Z1R3 (/ISO)
High-density lipoprotein particle assembly GO:0034380
The non-covalent aggregation and arrangement of proteins and lipids to form a high-density lipoprotein particle.
1 Q9Z1R3 (/IMP)
High-density lipoprotein particle assembly GO:0034380
The non-covalent aggregation and arrangement of proteins and lipids to form a high-density lipoprotein particle.
1 O95445 (/ISS)
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.
1 Q9Z1R3 (/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.
1 O95445 (/ISS)
Negative regulation of plasma lipoprotein oxidation GO:0034445
Any process that stops, prevents, or reduces the frequency, rate or extent of lipoprotein particle oxidation, occurring in the blood plasma.
1 Q9Z1R3 (/ISO)
Lipoprotein metabolic process GO:0042157
The chemical reactions and pathways involving any conjugated, water-soluble protein in which the covalently attached nonprotein group consists of a lipid or lipids.
1 Q9Z1R3 (/IMP)
Cholesterol homeostasis GO:0042632
Any process involved in the maintenance of an internal steady state of cholesterol within an organism or cell.
1 O95445 (/IC)
Reverse cholesterol transport GO:0043691
The directed movement of peripheral cell cholesterol, cholest-5-en-3-beta-ol, towards the liver for catabolism.
1 Q9Z1R3 (/IMP)
Reverse cholesterol transport GO:0043691
The directed movement of peripheral cell cholesterol, cholest-5-en-3-beta-ol, towards the liver for catabolism.
1 O95445 (/ISS)

There are 14 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
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.
2 O95445 (/IDA) Q9Z1R3 (/IDA)
Discoidal high-density lipoprotein particle GO:0034365
A newly formed high-density lipoprotein particle; consists of a phospholipid bilayer surrounded by two or more APOA1 molecules. The discoidal HDL particle is formed when lipid-free or lipid-poor APOA1 acquires phospholipids and unesterified cholesterol from either cell membranes or triglyceride-rich lipoproteins (undergoing lipolysis by lipoprotein lipase).
2 O95445 (/IDA) Q9Z1R3 (/IDA)
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 Q9Z1R3 (/IDA)
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 O95445 (/TAS)
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 P14630 (/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 Q9Z1R3 (/ISO)
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.
1 O95445 (/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.
1 Q9Z1R3 (/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.
1 O95445 (/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.
1 Q9Z1R3 (/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 Q9Z1R3 (/ISO)
Discoidal high-density lipoprotein particle GO:0034365
A newly formed high-density lipoprotein particle; consists of a phospholipid bilayer surrounded by two or more APOA1 molecules. The discoidal HDL particle is formed when lipid-free or lipid-poor APOA1 acquires phospholipids and unesterified cholesterol from either cell membranes or triglyceride-rich lipoproteins (undergoing lipolysis by lipoprotein lipase).
1 Q9Z1R3 (/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).
1 O95445 (/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 Q9Z1R3 (/ISO)
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