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:

"
Na, k-atpase alpha subunit.
".

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: Sodium/potassium-transporting ATPase subunit beta

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 11 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).
8 P05026 (/IPI) P05026 (/IPI) P05027 (/IPI) P05027 (/IPI) P08251 (/IPI) P14094 (/IPI) P14094 (/IPI) Q9TT37 (/IPI)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
5 P05026 (/IPI) P05026 (/IPI) P05027 (/IPI) P05027 (/IPI) Q9TT37 (/IPI)
Sodium:potassium-exchanging ATPase activity GO:0005391
Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + Na+(in) + K+(out) = ADP + phosphate + Na+(out) + K+(in).
4 P05027 (/IDA) P05027 (/IDA) P07340 (/IDA) Q91580 (/IDA)
ATPase activator activity GO:0001671
Binds to and increases the ATP hydrolysis activity of an ATPase.
2 P05026 (/IDA) P05026 (/IDA)
ATPase activator activity GO:0001671
Binds to and increases the ATP hydrolysis activity of an ATPase.
2 P14094 (/ISO) P14094 (/ISO)
Sodium:potassium-exchanging ATPase activity GO:0005391
Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + Na+(in) + K+(out) = ADP + phosphate + Na+(out) + K+(in).
2 P14094 (/ISO) P14094 (/ISO)
Protein C-terminus binding GO:0008022
Interacting selectively and non-covalently with a protein C-terminus, the end of any peptide chain at which the 1-carboxyl function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
2 P14094 (/IPI) P14094 (/IPI)
Protein kinase binding GO:0019901
Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.
2 P14094 (/IPI) P14094 (/IPI)
MHC class II protein complex binding GO:0023026
Interacting selectively and non-covalently with the class II major histocompatibility complex.
2 P05026 (/HDA) P05026 (/HDA)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
2 P14094 (/ISO) P14094 (/ISO)
Nitric-oxide synthase binding GO:0050998
Interacting selectively and non-covalently with the enzyme nitric-oxide synthase.
1 Q9TT37 (/IPI)

There are 63 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
Cellular sodium ion homeostasis GO:0006883
Any process involved in the maintenance of an internal steady state of sodium ions at the level of a cell.
5 P05026 (/IDA) P05026 (/IDA) P05027 (/IDA) P05027 (/IDA) Q91580 (/IDA)
Cellular potassium ion homeostasis GO:0030007
Any process involved in the maintenance of an internal steady state of potassium ions at the level of a cell.
5 P05026 (/IDA) P05026 (/IDA) P05027 (/IDA) P05027 (/IDA) Q91580 (/IDA)
Sodium ion export across plasma membrane GO:0036376
The directed movement of sodium ions from inside of a cell, across the plasma membrane and into the extracellular region.
5 P05026 (/IDA) P05026 (/IDA) P05027 (/IDA) P05027 (/IDA) Q91580 (/IDA)
Membrane repolarization GO:0086009
The process in which ions are transported across a membrane such that the membrane potential changes in the repolarizing direction, toward the steady state potential. For example, the repolarization during an action potential is from a positive membrane potential towards a negative resting potential.
5 P05026 (/IDA) P05026 (/IDA) P05027 (/IDA) P05027 (/IDA) Q91580 (/IDA)
Potassium ion import across plasma membrane GO:1990573
The directed movement of potassium ions from outside of a cell, across the plasma membrane and into the cytosol.
5 P05026 (/IDA) P05026 (/IDA) P05027 (/IDA) P05027 (/IDA) Q91580 (/IDA)
Establishment or maintenance of epithelial cell apical/basal polarity GO:0045197
Any cellular process that results in the specification, formation or maintenance of the apicobasal polarity of an epithelial cell.
4 Q5PNP7 (/IMP) Q6NYH5 (/IMP) Q7ZVX2 (/IMP) Q9DGL3 (/IMP)
Regulation of epidermis development GO:0045682
Any process that modulates the frequency, rate or extent of epidermis development.
4 Q5PNP7 (/IMP) Q6NYH5 (/IMP) Q7ZVX2 (/IMP) Q9DGL3 (/IMP)
Skin epidermis development GO:0098773
The process whose specific outcome is the progression of the skin epidermis over time, from its formation to the mature structure.
4 Q5PNP7 (/IMP) Q6NYH5 (/IMP) Q7ZVX2 (/IMP) Q9DGL3 (/IMP)
Regulation of cardiac muscle cell action potential GO:0098901
Any process that modulates the frequency, rate or extent of action potential creation, propagation or termination in a cardiac muscle cell. This typically occurs via modulation of the activity or expression of voltage-gated ion channels.
4 Q5PNP7 (/IMP) Q6NYH5 (/IMP) Q7ZVX2 (/IMP) Q9DGL3 (/IMP)
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 P14094 (/ISO) P14094 (/ISO)
Potassium ion transport GO:0006813
The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
2 P14094 (/ISO) P14094 (/ISO)
Sodium ion transport GO:0006814
The directed movement of sodium ions (Na+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
2 P14094 (/ISO) P14094 (/ISO)
Cellular calcium ion homeostasis GO:0006874
Any process involved in the maintenance of an internal steady state of calcium ions at the level of a cell.
2 P14094 (/IMP) P14094 (/IMP)
Cellular calcium ion homeostasis GO:0006874
Any process involved in the maintenance of an internal steady state of calcium ions at the level of a cell.
2 P05026 (/ISS) P05026 (/ISS)
Cellular sodium ion homeostasis GO:0006883
Any process involved in the maintenance of an internal steady state of sodium ions at the level of a cell.
2 P14094 (/ISO) P14094 (/ISO)
Establishment or maintenance of transmembrane electrochemical gradient GO:0010248
The directed movement of ions to establish or maintain an electrochemical gradient across a membrane by means of some agent such as a transporter or pore.
2 P05027 (/IC) P05027 (/IC)
Regulation of gene expression GO:0010468
Any process that modulates 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.
2 P14094 (/IMP) P14094 (/IMP)
Regulation of gene expression GO:0010468
Any process that modulates 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.
2 P05026 (/ISS) P05026 (/ISS)
Regulation of cardiac muscle contraction by calcium ion signaling GO:0010882
Any process that modulates the frequency, rate or extent of cardiac muscle contraction by changing the calcium ion signals that trigger contraction.
2 P14094 (/IMP) P14094 (/IMP)
Regulation of cardiac muscle contraction by calcium ion signaling GO:0010882
Any process that modulates the frequency, rate or extent of cardiac muscle contraction by changing the calcium ion signals that trigger contraction.
2 P05026 (/ISS) P05026 (/ISS)
Metal ion transport GO:0030001
The directed movement of metal ions, any metal ion with an electric charge, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
2 P14094 (/ISO) P14094 (/ISO)
Cellular potassium ion homeostasis GO:0030007
Any process involved in the maintenance of an internal steady state of potassium ions at the level of a cell.
2 P14094 (/ISO) P14094 (/ISO)
Positive regulation of ATPase activity GO:0032781
Any process that activates or increases the rate of ATP hydrolysis by an ATPase.
2 P05026 (/IDA) P05026 (/IDA)
Positive regulation of ATPase activity GO:0032781
Any process that activates or increases the rate of ATP hydrolysis by an ATPase.
2 P14094 (/ISO) P14094 (/ISO)
Ion transmembrane transport GO:0034220
A process in which an ion is transported across a membrane.
2 P05026 (/TAS) P05026 (/TAS)
Sodium ion export across plasma membrane GO:0036376
The directed movement of sodium ions from inside of a cell, across the plasma membrane and into the extracellular region.
2 P14094 (/IC) P14094 (/IC)
Sodium ion export across plasma membrane GO:0036376
The directed movement of sodium ions from inside of a cell, across the plasma membrane and into the extracellular region.
2 P14094 (/ISO) P14094 (/ISO)
Sodium ion export across plasma membrane GO:0036376
The directed movement of sodium ions from inside of a cell, across the plasma membrane and into the extracellular region.
2 P05026 (/ISS) P05026 (/ISS)
Protein transport into plasma membrane raft GO:0044861
The directed movement of a protein into a plasma membrane raft.
2 P05026 (/TAS) P05026 (/TAS)
ATP metabolic process GO:0046034
The chemical reactions and pathways involving ATP, adenosine triphosphate, a universally important coenzyme and enzyme regulator.
2 P05026 (/IDA) P05026 (/IDA)
ATP metabolic process GO:0046034
The chemical reactions and pathways involving ATP, adenosine triphosphate, a universally important coenzyme and enzyme regulator.
2 P14094 (/ISO) P14094 (/ISO)
Protein stabilization GO:0050821
Any process involved in maintaining the structure and integrity of a protein and preventing it from degradation or aggregation.
2 P05026 (/IDA) P05026 (/IDA)
Protein stabilization GO:0050821
Any process involved in maintaining the structure and integrity of a protein and preventing it from degradation or aggregation.
2 P14094 (/IMP) P14094 (/IMP)
Protein stabilization GO:0050821
Any process involved in maintaining the structure and integrity of a protein and preventing it from degradation or aggregation.
2 P14094 (/ISO) P14094 (/ISO)
Protein stabilization GO:0050821
Any process involved in maintaining the structure and integrity of a protein and preventing it from degradation or aggregation.
2 P05026 (/ISS) P05026 (/ISS)
Leukocyte migration GO:0050900
The movement of a leukocyte within or between different tissues and organs of the body.
2 P05026 (/TAS) P05026 (/TAS)
Transmembrane transport GO:0055085
The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
2 P05027 (/IDA) P05027 (/IDA)
Relaxation of cardiac muscle GO:0055119
The process in which the extent of cardiac muscle contraction is reduced.
2 P14094 (/IMP) P14094 (/IMP)
Relaxation of cardiac muscle GO:0055119
The process in which the extent of cardiac muscle contraction is reduced.
2 P05026 (/ISS) P05026 (/ISS)
Cardiac muscle contraction GO:0060048
Muscle contraction of cardiac muscle tissue.
2 P14094 (/IMP) P14094 (/IMP)
Cardiac muscle contraction GO:0060048
Muscle contraction of cardiac muscle tissue.
2 P05026 (/ISS) P05026 (/ISS)
Protein localization to plasma membrane GO:0072659
A process in which a protein is transported to, or maintained in, a specific location in the plasma membrane.
2 P05026 (/IDA) P05026 (/IDA)
Protein localization to plasma membrane GO:0072659
A process in which a protein is transported to, or maintained in, a specific location in the plasma membrane.
2 P14094 (/ISO) P14094 (/ISO)
Membrane repolarization GO:0086009
The process in which ions are transported across a membrane such that the membrane potential changes in the repolarizing direction, toward the steady state potential. For example, the repolarization during an action potential is from a positive membrane potential towards a negative resting potential.
2 P14094 (/ISO) P14094 (/ISO)
Membrane repolarization during cardiac muscle cell action potential GO:0086013
The process in which ions are transported across a membrane such that the cardiac muscle cell plasma membrane potential changes in the direction from the positive membrane potential at the peak of the action potential towards the negative resting potential.
2 P05026 (/IC) P05026 (/IC)
Cell communication by electrical coupling involved in cardiac conduction GO:0086064
The process that mediates signaling interactions between one cell and another cell by transfer of current between their adjacent cytoplasms via intercellular protein channels and contributes to the process of cardiac conduction.
2 P05026 (/TAS) P05026 (/TAS)
Positive regulation of potassium ion transmembrane transporter activity GO:1901018
Any process that activates or increases the frequency, rate or extent of potassium ion transmembrane transporter activity.
2 P05026 (/IDA) P05026 (/IDA)
Positive regulation of potassium ion transmembrane transporter activity GO:1901018
Any process that activates or increases the frequency, rate or extent of potassium ion transmembrane transporter activity.
2 P14094 (/ISO) P14094 (/ISO)
Regulation of calcium ion transmembrane transport GO:1903169
Any process that modulates the frequency, rate or extent of calcium ion transmembrane transport.
2 P14094 (/IMP) P14094 (/IMP)
Positive regulation of sodium ion export across plasma membrane GO:1903278
Any process that activates or increases the frequency, rate or extent of sodium ion export across the plasma membrane.
2 P05026 (/IDA) P05026 (/IDA)
Positive regulation of sodium ion export across plasma membrane GO:1903278
Any process that activates or increases the frequency, rate or extent of sodium ion export across the plasma membrane.
2 P14094 (/ISO) P14094 (/ISO)
Positive regulation of calcium:sodium antiporter activity GO:1903281
Any process that activates or increases the frequency, rate or extent of calcium:sodium antiporter activity.
2 P14094 (/IMP) P14094 (/IMP)
Positive regulation of calcium:sodium antiporter activity GO:1903281
Any process that activates or increases the frequency, rate or extent of calcium:sodium antiporter activity.
2 P05026 (/ISS) P05026 (/ISS)
Positive regulation of potassium ion import across plasma membrane GO:1903288
Any process that activates or increases the frequency, rate or extent of potassium ion import across the plasma membrane.
2 P05026 (/IDA) P05026 (/IDA)
Positive regulation of potassium ion import across plasma membrane GO:1903288
Any process that activates or increases the frequency, rate or extent of potassium ion import across the plasma membrane.
2 P14094 (/ISO) P14094 (/ISO)
Regulation of cardiac conduction GO:1903779
Any process that modulates the frequency, rate or extent of cardiac conduction.
2 P05026 (/TAS) P05026 (/TAS)
Potassium ion import across plasma membrane GO:1990573
The directed movement of potassium ions from outside of a cell, across the plasma membrane and into the cytosol.
2 P14094 (/IC) P14094 (/IC)
Potassium ion import across plasma membrane GO:1990573
The directed movement of potassium ions from outside of a cell, across the plasma membrane and into the cytosol.
2 P14094 (/ISO) P14094 (/ISO)
Potassium ion import across plasma membrane GO:1990573
The directed movement of potassium ions from outside of a cell, across the plasma membrane and into the cytosol.
2 P05026 (/ISS) P05026 (/ISS)
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.
1 P07340 (/IDA)
Potassium ion transport GO:0006813
The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
1 P07340 (/IDA)
Sodium ion transport GO:0006814
The directed movement of sodium ions (Na+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
1 P07340 (/IDA)
Metal ion transport GO:0030001
The directed movement of metal ions, any metal ion with an electric charge, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
1 P07340 (/IDA)

There are 22 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
Sodium:potassium-exchanging ATPase complex GO:0005890
Sodium:potassium-exchanging ATPases are tetrameric proteins, consisting of two large alpha subunits and two smaller beta subunits. The alpha subunits bear the active site and penetrate the membrane, while the beta subunits carry oligosaccharide groups and face the cell exterior.
6 P05026 (/IDA) P05026 (/IDA) P05027 (/IDA) P05027 (/IDA) P07340 (/IDA) Q91580 (/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.
4 P05026 (/IDA) P05026 (/IDA) P14094 (/IDA) P14094 (/IDA)
Basolateral plasma membrane GO:0016323
The region of the plasma membrane that includes the basal end and sides of the cell. Often used in reference to animal polarized epithelial membranes, where the basal membrane is the part attached to the extracellular matrix, or in plant cells, where the basal membrane is defined with respect to the zygotic axis.
3 P07340 (/IDA) P14094 (/IDA) P14094 (/IDA)
Apical plasma membrane GO:0016324
The region of the plasma membrane located at the apical end of the cell.
3 P07340 (/IDA) P14094 (/IDA) P14094 (/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.
2 P14094 (/ISO) P14094 (/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.
2 P05026 (/TAS) P05026 (/TAS)
Sodium:potassium-exchanging ATPase complex GO:0005890
Sodium:potassium-exchanging ATPases are tetrameric proteins, consisting of two large alpha subunits and two smaller beta subunits. The alpha subunits bear the active site and penetrate the membrane, while the beta subunits carry oligosaccharide groups and face the cell exterior.
2 P14094 (/IMP) P14094 (/IMP)
Sodium:potassium-exchanging ATPase complex GO:0005890
Sodium:potassium-exchanging ATPases are tetrameric proteins, consisting of two large alpha subunits and two smaller beta subunits. The alpha subunits bear the active site and penetrate the membrane, while the beta subunits carry oligosaccharide groups and face the cell exterior.
2 P14094 (/ISO) P14094 (/ISO)
Sodium:potassium-exchanging ATPase complex GO:0005890
Sodium:potassium-exchanging ATPases are tetrameric proteins, consisting of two large alpha subunits and two smaller beta subunits. The alpha subunits bear the active site and penetrate the membrane, while the beta subunits carry oligosaccharide groups and face the cell exterior.
2 P05026 (/ISS) P05026 (/ISS)
Caveola GO:0005901
A membrane raft that forms small pit, depression, or invagination that communicates with the outside of a cell and extends inward, indenting the cytoplasm and the cell membrane. Examples include flask-shaped invaginations of the plasma membrane in adipocytes associated with caveolin proteins, and minute pits or incuppings of the cell membrane formed during pinocytosis. Caveolae may be pinched off to form free vesicles within the cytoplasm.
2 P14094 (/ISO) P14094 (/ISO)
Intercalated disc GO:0014704
A complex cell-cell junction at which myofibrils terminate in cardiomyocytes; mediates mechanical and electrochemical integration between individual cardiomyocytes. The intercalated disc contains regions of tight mechanical attachment (fasciae adherentes and desmosomes) and electrical coupling (gap junctions) between adjacent cells.
2 P14094 (/IMP) P14094 (/IMP)
Intercalated disc GO:0014704
A complex cell-cell junction at which myofibrils terminate in cardiomyocytes; mediates mechanical and electrochemical integration between individual cardiomyocytes. The intercalated disc contains regions of tight mechanical attachment (fasciae adherentes and desmosomes) and electrical coupling (gap junctions) between adjacent cells.
2 P05026 (/ISS) P05026 (/ISS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
2 P05026 (/IDA) P05026 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
2 P14094 (/ISO) P14094 (/ISO)
Basolateral plasma membrane GO:0016323
The region of the plasma membrane that includes the basal end and sides of the cell. Often used in reference to animal polarized epithelial membranes, where the basal membrane is the part attached to the extracellular matrix, or in plant cells, where the basal membrane is defined with respect to the zygotic axis.
2 P14094 (/ISO) P14094 (/ISO)
Apical plasma membrane GO:0016324
The region of the plasma membrane located at the apical end of the cell.
2 P14094 (/ISO) P14094 (/ISO)
Sarcolemma GO:0042383
The outer membrane of a muscle cell, consisting of the plasma membrane, a covering basement membrane (about 100 nm thick and sometimes common to more than one fiber), and the associated loose network of collagen fibers.
2 P14094 (/IMP) P14094 (/IMP)
Sarcolemma GO:0042383
The outer membrane of a muscle cell, consisting of the plasma membrane, a covering basement membrane (about 100 nm thick and sometimes common to more than one fiber), and the associated loose network of collagen fibers.
2 P05026 (/ISS) P05026 (/ISS)
Myelin sheath GO:0043209
An electrically insulating fatty layer that surrounds the axons of many neurons. It is an outgrowth of glial cells: Schwann cells supply the myelin for peripheral neurons while oligodendrocytes supply it to those of the central nervous system.
2 P14094 (/HDA) P14094 (/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 P05026 (/HDA) P05026 (/HDA)
Extracellular vesicle GO:1903561
Any vesicle that is part of the extracellular region.
2 P05026 (/HDA) P05026 (/HDA)
Caveola GO:0005901
A membrane raft that forms small pit, depression, or invagination that communicates with the outside of a cell and extends inward, indenting the cytoplasm and the cell membrane. Examples include flask-shaped invaginations of the plasma membrane in adipocytes associated with caveolin proteins, and minute pits or incuppings of the cell membrane formed during pinocytosis. Caveolae may be pinched off to form free vesicles within the cytoplasm.
1 P07340 (/IDA)
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