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:

"
Porin
".

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 2: Outer membrane porin F

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 12 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).
71 P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI)
(61 more)
Ion channel activity GO:0005216
Enables the facilitated diffusion of an ion (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism. May be either selective (it enables passage of a specific ion only) or non-selective (it enables passage of two or more ions of same charge but different size).
58 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(48 more)
Ion transmembrane transporter activity GO:0015075
Enables the transfer of an ion from one side of a membrane to the other.
58 P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS)
(48 more)
Porin activity GO:0015288
Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.
58 P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP)
(48 more)
Porin activity GO:0015288
Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.
58 P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS)
(48 more)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
58 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(48 more)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
58 P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI)
(48 more)
Xenobiotic transmembrane transporter activity GO:0042910
Enables the directed movement of a xenobiotic from one side of a membrane to the other. A xenobiotic is a compound foreign the organim exposed to it. It may be synthesized by another organism (like ampicilin) or it can be a synthetic chemical.
58 P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP)
(48 more)
Colicin transmembrane transporter activity GO:0042912
Enables the transfer of a colicin from one side of a membrane to the other. Colicins are a group of antibiotics produced by E. coli and related species that are encoded by a group of naturally occurring plasmids, e.g. Col E1.
58 P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP)
(48 more)
Protein N-terminus binding GO:0047485
Interacting selectively and non-covalently with a protein N-terminus, the end of any peptide chain at which the 2-amino (or 2-imino) function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
58 P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI)
(48 more)
Disordered domain specific binding GO:0097718
Interacting selectively and non-covalently with a disordered domain of a protein.
58 P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI) P02931 (/IPI)
(48 more)
Porin activity GO:0015288
Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.
12 P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA)
(2 more)

There are 7 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
Drug transmembrane transport GO:0006855
The process in which a drug is transported across a membrane.
58 P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP) P02931 (/IMP)
(48 more)
Ion transmembrane transport GO:0034220
A process in which an ion is transported across a membrane.
58 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(48 more)
Ion transmembrane transport GO:0034220
A process in which an ion is transported across a membrane.
58 P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS) P02931 (/TAS)
(48 more)
Protein homotrimerization GO:0070207
The formation of a protein homotrimer, a macromolecular structure consisting of three noncovalently associated identical subunits.
58 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(48 more)
Cellular response to DNA damage stimulus GO:0006974
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 stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
13 P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP) P06996 (/IEP)
(3 more)
Phospholipid transport GO:0015914
The directed movement of phospholipids into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Phospholipids are any lipids containing phosphoric acid as a mono- or diester.
13 P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP) P06996 (/IMP)
(3 more)
Carbohydrate transmembrane transport GO:0034219
The process in which a carbohydrate is transported across a membrane.
12 P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA)
(2 more)

There are 6 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
Pore complex GO:0046930
Any small opening in a membrane that allows the passage of gases and/or liquids.
82 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(72 more)
Cell outer membrane GO:0009279
A lipid bilayer that forms the outermost membrane of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures.
71 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(61 more)
Integral component of membrane GO:0016021
The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
58 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(48 more)
Ion channel complex GO:0034702
A protein complex that spans a membrane and forms a water-filled channel across the phospholipid bilayer allowing selective ion transport down its electrochemical gradient.
58 P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA) P02931 (/IDA)
(48 more)
Integral component of cell outer membrane GO:0045203
The component of the cell outer membrane consisting of the gene products having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
13 P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA) P06996 (/IDA)
(3 more)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
12 P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA) P77747 (/IDA)
(2 more)