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 70: Serum amyloid P-component

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 20 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
Complement component C1q binding GO:0001849
Interacting selectively and non-covalently with the C1q component of the classical complement cascade.
3 P02741 (/IDA) P02743 (/IDA) P02743 (/IDA)
Complement component C1q binding GO:0001849
Interacting selectively and non-covalently with the C1q component of the classical complement cascade.
3 P12246 (/ISO) P12246 (/ISO) P14847 (/ISO)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
3 P02741 (/IDA) P02743 (/IDA) P02743 (/IDA)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
3 P12246 (/ISO) P12246 (/ISO) P14847 (/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).
3 P02741 (/IPI) P48199 (/IPI) P48199 (/IPI)
Low-density lipoprotein particle binding GO:0030169
Interacting selectively and non-covalently with a low-density lipoprotein particle, a lipoprotein particle that is rich in cholesterol esters and low in triglycerides, 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.
3 P02741 (/IDA) P48199 (/IDA) P48199 (/IDA)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
3 P02741 (/IPI) P02743 (/IPI) P02743 (/IPI)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
3 P12246 (/ISO) P12246 (/ISO) P14847 (/ISO)
Cholesterol binding GO:0015485
Interacting selectively and non-covalently with cholesterol (cholest-5-en-3-beta-ol); the principal sterol of vertebrates and the precursor of many steroids, including bile acids and steroid hormones.
2 P48199 (/IDA) P48199 (/IDA)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P48199 (/IDA) P48199 (/IDA)
Virion binding GO:0046790
Interacting selectively and non-covalently with a virion, either by binding to components of the capsid or the viral envelope.
2 P02743 (/IDA) P02743 (/IDA)
Virion binding GO:0046790
Interacting selectively and non-covalently with a virion, either by binding to components of the capsid or the viral envelope.
2 P12246 (/ISO) P12246 (/ISO)
Unfolded protein binding GO:0051082
Interacting selectively and non-covalently with an unfolded protein.
2 P02743 (/TAS) P02743 (/TAS)
Cholesterol binding GO:0015485
Interacting selectively and non-covalently with cholesterol (cholest-5-en-3-beta-ol); the principal sterol of vertebrates and the precursor of many steroids, including bile acids and steroid hormones.
1 P14847 (/ISO)
Galactoside binding GO:0016936
Interacting selectively and non-covalently with any glycoside in which the sugar group is galactose.
1 Q9PTT2 (/IDA)
Low-density lipoprotein particle binding GO:0030169
Interacting selectively and non-covalently with a low-density lipoprotein particle, a lipoprotein particle that is rich in cholesterol esters and low in triglycerides, 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.
1 P14847 (/ISO)
Choline binding GO:0033265
Interacting selectively and non-covalently with choline, the amine 2-hydroxy-N,N,N-trimethylethanaminium.
1 P02741 (/TAS)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 P14847 (/ISO)
Low-density lipoprotein particle receptor binding GO:0050750
Interacting selectively and non-covalently with a low-density lipoprotein receptor.
1 P02741 (/IPI)
Low-density lipoprotein particle receptor binding GO:0050750
Interacting selectively and non-covalently with a low-density lipoprotein receptor.
1 P14847 (/ISO)

There are 67 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
Regulation of interleukin-8 secretion GO:2000482
Any process that modulates the frequency, rate or extent of interleukin-8 secretion.
8 O19062 (/ISS) P02742 (/ISS) P14847 (/ISS) P48199 (/ISS) P48199 (/ISS) P49254 (/ISS) P49262 (/ISS) P49262 (/ISS)
Acute-phase response GO:0006953
An acute inflammatory response that involves non-antibody proteins whose concentrations in the plasma increase in response to infection or injury of homeothermic animals.
3 P02741 (/TAS) P02743 (/TAS) P02743 (/TAS)
Response to hypoxia GO:0001666
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 indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
2 P48199 (/IEP) P48199 (/IEP)
Negative regulation of acute inflammatory response GO:0002674
Any process that stops, prevents, or reduces the frequency, rate, or extent of an acute inflammatory response.
2 P02743 (/IC) P02743 (/IC)
Protein folding GO:0006457
The process of assisting in the covalent and noncovalent assembly of single chain polypeptides or multisubunit complexes into the correct tertiary structure.
2 P02743 (/TAS) P02743 (/TAS)
Acute-phase response GO:0006953
An acute inflammatory response that involves non-antibody proteins whose concentrations in the plasma increase in response to infection or injury of homeothermic animals.
2 P48199 (/IEP) P48199 (/IEP)
Complement activation, classical pathway GO:0006958
Any process involved in the activation of any of the steps of the classical pathway of the complement cascade which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes.
2 P48199 (/IMP) P48199 (/IMP)
Aging GO:0007568
A developmental process that is a deterioration and loss of function over time. Aging includes loss of functions such as resistance to disease, homeostasis, and fertility, as well as wear and tear. Aging includes cellular senescence, but is more inclusive. May precede death and may succeed developmental maturation (GO:0021700).
2 P48199 (/IEP) P48199 (/IEP)
Response to radiation GO:0009314
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 electromagnetic radiation stimulus. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation.
2 P48199 (/IEP) P48199 (/IEP)
Response to lead ion GO:0010288
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 lead ion stimulus.
2 P48199 (/IEP) P48199 (/IEP)
Regulation of low-density lipoprotein particle clearance GO:0010988
Any process that modulates the rate, frequency or extent of low-density lipoprotein particle clearance. Low-density lipoprotein particle clearance is the process in which a low-density lipoprotein particle is removed from the blood via receptor-mediated endocytosis and its constituent parts degraded.
2 P48199 (/IDA) P48199 (/IDA)
Response to estradiol GO:0032355
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 stimulus by estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen.
2 P48199 (/IEP) P48199 (/IEP)
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.
2 P48199 (/IDA) P48199 (/IDA)
Response to testosterone GO:0033574
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 testosterone stimulus.
2 P48199 (/IEP) P48199 (/IEP)
Wound healing GO:0042060
The series of events that restore integrity to a damaged tissue, following an injury.
2 P48199 (/IMP) P48199 (/IMP)
Cellular protein metabolic process GO:0044267
The chemical reactions and pathways involving a specific protein, rather than of proteins in general, occurring at the level of an individual cell. Includes cellular protein modification.
2 P02743 (/TAS) P02743 (/TAS)
Negative regulation by host of viral exo-alpha-sialidase activity GO:0044869
The process in which a host organism decreases viral exo-alpha-sialidase activity, the catalysis of the hydrolysis of peptide bonds in a protein.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation by host of viral exo-alpha-sialidase activity GO:0044869
The process in which a host organism decreases viral exo-alpha-sialidase activity, the catalysis of the hydrolysis of peptide bonds in a protein.
2 P12246 (/ISO) P12246 (/ISO)
Negative regulation by host of viral glycoprotein metabolic process GO:0044871
A process in which a host organism stops, prevents or reduces the frequency, rate or extent of viral glycoprotein metabolic process.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation by host of viral glycoprotein metabolic process GO:0044871
A process in which a host organism stops, prevents or reduces the frequency, rate or extent of viral glycoprotein metabolic process.
2 P12246 (/ISO) P12246 (/ISO)
Innate immune response GO:0045087
Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
2 P02743 (/IDA) P02743 (/IDA)
Innate immune response GO:0045087
Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
2 P12246 (/ISO) P12246 (/ISO)
Positive regulation of nitric oxide biosynthetic process GO:0045429
Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of nitric oxide.
2 P48199 (/IDA) P48199 (/IDA)
Response to ethanol GO:0045471
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 ethanol stimulus.
2 P48199 (/IEP) P48199 (/IEP)
Negative regulation of monocyte differentiation GO:0045656
Any process that stops, prevents, or reduces the frequency, rate or extent of monocyte differentiation.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation of monocyte differentiation GO:0045656
Any process that stops, prevents, or reduces the frequency, rate or extent of monocyte differentiation.
2 P12246 (/ISO) P12246 (/ISO)
Negative regulation of viral entry into host cell GO:0046597
Any process that stops, prevents, or reduces the frequency, rate or extent of the entry of viral entry into a host cell.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation of viral entry into host cell GO:0046597
Any process that stops, prevents, or reduces the frequency, rate or extent of the entry of viral entry into a host cell.
2 P12246 (/ISO) P12246 (/ISO)
Negative regulation of viral process GO:0048525
Any process that stops, prevents, or reduces the frequency, rate or extent of a multi-organism process in which a virus is a participant.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation of viral process GO:0048525
Any process that stops, prevents, or reduces the frequency, rate or extent of a multi-organism process in which a virus is a participant.
2 P12246 (/ISO) P12246 (/ISO)
Chaperone-mediated protein complex assembly GO:0051131
The aggregation, arrangement and bonding together of a set of components to form a protein complex, mediated by chaperone molecules that do not form part of the finished complex.
2 P02743 (/TAS) P02743 (/TAS)
Protein polymerization GO:0051258
The process of creating protein polymers, compounds composed of a large number of component monomers; polymeric proteins may be made up of different or identical monomers. Polymerization occurs by the addition of extra monomers to an existing poly- or oligomeric protein.
2 P48199 (/IDA) P48199 (/IDA)
Negative regulation of wound healing GO:0061045
Any process that decreases the rate, frequency, or extent of the series of events that restore integrity to a damaged tissue, following an injury.
2 P02743 (/IC) P02743 (/IC)
Protein-containing complex assembly GO:0065003
The aggregation, arrangement and bonding together of a set of macromolecules to form a protein-containing complex.
2 P23680 (/IPI) P23680 (/IPI)
Protein-containing complex assembly GO:0065003
The aggregation, arrangement and bonding together of a set of macromolecules to form a protein-containing complex.
2 P12246 (/ISO) P12246 (/ISO)
Cellular response to calcium ion GO:0071277
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 a calcium ion stimulus.
2 P48199 (/IDA) P48199 (/IDA)
Cellular response to interleukin-6 GO:0071354
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 interleukin-6 stimulus.
2 P48199 (/IEP) P48199 (/IEP)
Cellular response to nitric oxide GO:0071732
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 a nitric oxide stimulus.
2 P48199 (/IEP) P48199 (/IEP)
Positive regulation of dendrite development GO:1900006
Any process that activates or increases the frequency, rate or extent of dendrite development.
2 P48199 (/IMP) P48199 (/IMP)
Negative regulation of exo-alpha-sialidase activity GO:1903016
Any process that stops, prevents or reduces the frequency, rate or extent of exo-alpha-sialidase activity.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation of exo-alpha-sialidase activity GO:1903016
Any process that stops, prevents or reduces the frequency, rate or extent of exo-alpha-sialidase activity.
2 P12246 (/ISO) P12246 (/ISO)
Negative regulation of glycoprotein metabolic process GO:1903019
Any process that stops, prevents or reduces the frequency, rate or extent of glycoprotein metabolic process.
2 P02743 (/IDA) P02743 (/IDA)
Negative regulation of glycoprotein metabolic process GO:1903019
Any process that stops, prevents or reduces the frequency, rate or extent of glycoprotein metabolic process.
2 P12246 (/ISO) P12246 (/ISO)
Inflammatory response GO:0006954
The immediate defensive reaction (by vertebrate tissue) to infection or injury caused by chemical or physical agents. The process is characterized by local vasodilation, extravasation of plasma into intercellular spaces and accumulation of white blood cells and macrophages.
1 P02741 (/TAS)
Complement activation, classical pathway GO:0006958
Any process involved in the activation of any of the steps of the classical pathway of the complement cascade which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes.
1 P14847 (/ISO)
Opsonization GO:0008228
The process in which a microorganism (or other particulate material) is rendered more susceptible to phagocytosis by coating with an opsonin, a blood serum protein such as a complement component or antibody.
1 P02741 (/TAS)
Positive regulation of gene expression GO:0010628
Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
1 P02741 (/IDA)
Positive regulation of gene expression GO:0010628
Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
1 P14847 (/ISO)
Negative regulation of macrophage derived foam cell differentiation GO:0010745
Any process that decreases the rate, frequency or extent of macrophage derived foam cell differentiation. Macrophage derived foam cell differentiation is the process in which a macrophage acquires the specialized features of a foam cell. A foam cell is a type of cell containing lipids in small vacuoles and typically seen in atherosclerotic lesions, as well as other conditions.
1 P02741 (/IDA)
Negative regulation of macrophage derived foam cell differentiation GO:0010745
Any process that decreases the rate, frequency or extent of macrophage derived foam cell differentiation. Macrophage derived foam cell differentiation is the process in which a macrophage acquires the specialized features of a foam cell. A foam cell is a type of cell containing lipids in small vacuoles and typically seen in atherosclerotic lesions, as well as other conditions.
1 P14847 (/ISO)
Negative regulation of lipid storage GO:0010888
Any process that decreases the rate, frequency or extent of lipid storage. Lipid storage is the accumulation and maintenance in cells or tissues of lipids, compounds soluble in organic solvents but insoluble or sparingly soluble in aqueous solvents. Lipid reserves can be accumulated during early developmental stages for mobilization and utilization at later stages of development.
1 P02741 (/IDA)
Negative regulation of lipid storage GO:0010888
Any process that decreases the rate, frequency or extent of lipid storage. Lipid storage is the accumulation and maintenance in cells or tissues of lipids, compounds soluble in organic solvents but insoluble or sparingly soluble in aqueous solvents. Lipid reserves can be accumulated during early developmental stages for mobilization and utilization at later stages of development.
1 P14847 (/ISO)
Regulation of low-density lipoprotein particle clearance GO:0010988
Any process that modulates the rate, frequency or extent of low-density lipoprotein particle clearance. Low-density lipoprotein particle clearance is the process in which a low-density lipoprotein particle is removed from the blood via receptor-mediated endocytosis and its constituent parts degraded.
1 P14847 (/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 P14847 (/ISO)
Positive regulation of superoxide anion generation GO:0032930
Any process that activates or increases the frequency, rate or extent of enzymatic generation of superoxide by a cell.
1 P02741 (/IDA)
Positive regulation of superoxide anion generation GO:0032930
Any process that activates or increases the frequency, rate or extent of enzymatic generation of superoxide by a cell.
1 P14847 (/ISO)
Wound healing GO:0042060
The series of events that restore integrity to a damaged tissue, following an injury.
1 P14847 (/ISO)
Positive regulation of nitric oxide biosynthetic process GO:0045429
Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of nitric oxide.
1 P14847 (/ISO)
Defense response to Gram-positive bacterium GO:0050830
Reactions triggered in response to the presence of a Gram-positive bacterium that act to protect the cell or organism.
1 P02741 (/TAS)
Protein polymerization GO:0051258
The process of creating protein polymers, compounds composed of a large number of component monomers; polymeric proteins may be made up of different or identical monomers. Polymerization occurs by the addition of extra monomers to an existing poly- or oligomeric protein.
1 P14847 (/ISO)
Cellular response to calcium ion GO:0071277
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 a calcium ion stimulus.
1 P14847 (/ISO)
Negative regulation of blood vessel diameter GO:0097756
Any process that decreases the diameter of blood vessels.
1 P02741 (/IDA)
Negative regulation of blood vessel diameter GO:0097756
Any process that decreases the diameter of blood vessels.
1 P02741 (/IMP)
Negative regulation of blood vessel diameter GO:0097756
Any process that decreases the diameter of blood vessels.
1 P14847 (/ISO)
Positive regulation of dendrite development GO:1900006
Any process that activates or increases the frequency, rate or extent of dendrite development.
1 P14847 (/ISO)
Regulation of interleukin-8 secretion GO:2000482
Any process that modulates the frequency, rate or extent of interleukin-8 secretion.
1 P02741 (/IDA)
Regulation of interleukin-8 secretion GO:2000482
Any process that modulates the frequency, rate or extent of interleukin-8 secretion.
1 P14847 (/ISO)

There are 18 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 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.
5 P02741 (/IDA) P02743 (/IDA) P02743 (/IDA) P48199 (/IDA) P48199 (/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.
3 P02741 (/NAS) P02743 (/NAS) P02743 (/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.
3 P12246 (/ISO) P12246 (/ISO) P14847 (/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.
2 P02743 (/HDA) P02743 (/HDA)
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 P02743 (/TAS) P02743 (/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.
2 P02743 (/HDA) P02743 (/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.
2 P02743 (/TAS) P02743 (/TAS)
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.
2 P02743 (/HDA) P02743 (/HDA)
Filopodium GO:0030175
Thin, stiff, actin-based protrusion extended by the leading edge of a motile cell such as a crawling fibroblast or amoeba, or an axonal or dendritic growth cone, or a dendritic shaft.
2 P48199 (/IDA) P48199 (/IDA)
Growth cone GO:0030426
The migrating motile tip of a growing neuron projection, where actin accumulates, and the actin cytoskeleton is the most dynamic.
2 P48199 (/IDA) P48199 (/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.
2 P23680 (/IDA) P23680 (/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.
2 P12246 (/ISO) P12246 (/ISO)
Collagen-containing extracellular matrix GO:0062023
An extracellular matrix consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that provides not only essential physical scaffolding for the cellular constituents but can also initiate crucial biochemical and biomechanical cues required for tissue morphogenesis, differentiation and homeostasis. The components are secreted by cells in the vicinity and form a sheet underlying or overlying cells such as endothelial and epithelial cells.
2 P02743 (/HDA) P02743 (/HDA)
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.
2 P02743 (/HDA) P02743 (/HDA)
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.
2 P02743 (/HDA) P02743 (/HDA)
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 Q9PTT2 (/IDA)
Filopodium GO:0030175
Thin, stiff, actin-based protrusion extended by the leading edge of a motile cell such as a crawling fibroblast or amoeba, or an axonal or dendritic growth cone, or a dendritic shaft.
1 P14847 (/ISO)
Growth cone GO:0030426
The migrating motile tip of a growing neuron projection, where actin accumulates, and the actin cytoskeleton is the most dynamic.
1 P14847 (/ISO)