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:

"
Isoleucyl-tRNA Synthetase; Domain 1
".

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 13: leucine--tRNA ligase, cytoplasmic

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 7 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
Glutamine-tRNA ligase activity GO:0004819
Catalysis of the reaction: ATP + L-glutamine + tRNA(Gln) = AMP + diphosphate + L-glutaminyl-tRNA(Gln).
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Leucine-tRNA ligase activity GO:0004823
Catalysis of the reaction: L-leucine + ATP + tRNA(Leu) = AMP + diphosphate + 2 H(+) + Leu-tRNA(Leu).
2 Q8BMJ2 (/IMP) Q8BMJ2 (/IMP)
GTPase activator activity GO:0005096
Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/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).
2 Q5PPJ6 (/IPI) Q9P2J5 (/IPI)
Glutamine-tRNA ligase activity GO:0004819
Catalysis of the reaction: ATP + L-glutamine + tRNA(Gln) = AMP + diphosphate + L-glutaminyl-tRNA(Gln).
1 Q9P2J5 (/IDA)
Leucine-tRNA ligase activity GO:0004823
Catalysis of the reaction: L-leucine + ATP + tRNA(Leu) = AMP + diphosphate + 2 H(+) + Leu-tRNA(Leu).
1 Q9P2J5 (/TAS)
GTPase activator activity GO:0005096
Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP.
1 Q9P2J5 (/IMP)

There are 22 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
Glutaminyl-tRNA aminoacylation GO:0006425
The process of coupling glutamine to glutaminyl-tRNA, catalyzed by glutaminyl-tRNA synthetase. The glutaminyl-tRNA synthetase is a class-I synthetase. The activated amino acid is transferred to the 2'-OH group of a glutamine-accetping tRNA. The 2'-O-aminoacyl-tRNA will ultimately migrate to the 3' position via transesterification.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Leucyl-tRNA aminoacylation GO:0006429
The process of coupling leucine to leucyl-tRNA, catalyzed by leucyl-tRNA synthetase. The leucyl-tRNA synthetase is a class-I synthetase. The activated amino acid is transferred to the 2'-OH group of a leucine-accetping tRNA. The 2'-O-aminoacyl-tRNA will ultimately migrate to the 3' position via transesterification.
2 Q8BMJ2 (/IDA) Q8BMJ2 (/IDA)
Protein targeting to lysosome GO:0006622
The process of directing proteins towards the lysosome using signals contained within the protein.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Regulation of cell size GO:0008361
Any process that modulates the size of a cell.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Negative regulation of autophagy GO:0010507
Any process that stops, prevents, or reduces the frequency, rate or extent of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Cellular response to amino acid starvation GO:0034198
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 deprivation of amino acids.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Positive regulation of GTPase activity GO:0043547
Any process that activates or increases the activity of a GTPase.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Cellular response to amino acid stimulus GO:0071230
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 amino acid stimulus. An amino acid is a carboxylic acids containing one or more amino groups.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Cellular response to leucine GO:0071233
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 leucine stimulus.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Positive regulation of TORC1 signaling GO:1904263
Any process that activates or increases the frequency, rate or extent of TORC1 signaling.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Cellular response to leucine starvation GO:1990253
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 deprivation of leucine.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
TRNA aminoacylation for protein translation GO:0006418
The synthesis of aminoacyl tRNA by the formation of an ester bond between the 3'-hydroxyl group of the most 3' adenosine of the tRNA and the alpha carboxylic acid group of an amino acid, to be used in ribosome-mediated polypeptide synthesis.
1 Q9P2J5 (/TAS)
Glutaminyl-tRNA aminoacylation GO:0006425
The process of coupling glutamine to glutaminyl-tRNA, catalyzed by glutaminyl-tRNA synthetase. The glutaminyl-tRNA synthetase is a class-I synthetase. The activated amino acid is transferred to the 2'-OH group of a glutamine-accetping tRNA. The 2'-O-aminoacyl-tRNA will ultimately migrate to the 3' position via transesterification.
1 Q9P2J5 (/IDA)
Protein targeting to lysosome GO:0006622
The process of directing proteins towards the lysosome using signals contained within the protein.
1 Q9P2J5 (/IMP)
Regulation of cell size GO:0008361
Any process that modulates the size of a cell.
1 Q9P2J5 (/IMP)
Negative regulation of autophagy GO:0010507
Any process that stops, prevents, or reduces the frequency, rate or extent of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
1 Q9P2J5 (/IMP)
Cellular response to amino acid starvation GO:0034198
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 deprivation of amino acids.
1 Q9P2J5 (/IMP)
Positive regulation of GTPase activity GO:0043547
Any process that activates or increases the activity of a GTPase.
1 Q9P2J5 (/IMP)
Cellular response to amino acid stimulus GO:0071230
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 amino acid stimulus. An amino acid is a carboxylic acids containing one or more amino groups.
1 Q9P2J5 (/IMP)
Cellular response to leucine GO:0071233
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 leucine stimulus.
1 Q9P2J5 (/IMP)
Positive regulation of TORC1 signaling GO:1904263
Any process that activates or increases the frequency, rate or extent of TORC1 signaling.
1 Q9P2J5 (/IMP)
Cellular response to leucine starvation GO:1990253
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 deprivation of leucine.
1 Q9P2J5 (/IMP)

There are 15 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
Aminoacyl-tRNA synthetase multienzyme complex GO:0017101
A multienzyme complex found in all multicellular eukaryotes composed of eight proteins with aminoacyl-tRNA synthetase activities (abbreviated as: ArgRS, AspRS, GluProRS, GlnRS, IleRS, LeuRS, LysRS, MetRS where RS is the enzyme, preceded by the amino acid it uses as a substrate) as well as three non-synthetase proteins (p43, p38, and p18) with diverse functions. Several of these subunits are known dimers, so the total polypeptide count in the multisynthetase complex is at least fifteen. All of the enzymes in this assembly catalyze the same reaction, the covalent attachment of an amino acid to either the 2'- or 3'-hydroxyl of the 3'-terminal adenosine of tRNA, but using different substrates.
3 Q8BMJ2 (/IDA) Q8BMJ2 (/IDA) Q9P2J5 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Lysosome GO:0005764
A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
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 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Endomembrane system GO:0012505
A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Nuclear body GO:0016604
Extra-nucleolar nuclear domains usually visualized by confocal microscopy and fluorescent antibodies to specific proteins.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Aminoacyl-tRNA synthetase multienzyme complex GO:0017101
A multienzyme complex found in all multicellular eukaryotes composed of eight proteins with aminoacyl-tRNA synthetase activities (abbreviated as: ArgRS, AspRS, GluProRS, GlnRS, IleRS, LeuRS, LysRS, MetRS where RS is the enzyme, preceded by the amino acid it uses as a substrate) as well as three non-synthetase proteins (p43, p38, and p18) with diverse functions. Several of these subunits are known dimers, so the total polypeptide count in the multisynthetase complex is at least fifteen. All of the enzymes in this assembly catalyze the same reaction, the covalent attachment of an amino acid to either the 2'- or 3'-hydroxyl of the 3'-terminal adenosine of tRNA, but using different substrates.
2 Q8BMJ2 (/ISO) Q8BMJ2 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q9P2J5 (/IDA)
Lysosome GO:0005764
A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
1 Q9P2J5 (/IMP)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
1 Q9P2J5 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 Q9P2J5 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 Q9P2J5 (/TAS)
Endomembrane system GO:0012505
A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles.
1 Q9P2J5 (/IDA)
Nuclear body GO:0016604
Extra-nucleolar nuclear domains usually visualized by confocal microscopy and fluorescent antibodies to specific proteins.
1 Q9P2J5 (/IDA)