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:

"
K Homology domain, type 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 36: KH RNA binding domain containing, signal transduct...

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 23 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
SH3/SH2 adaptor activity GO:0005070
Interacting selectively and non-covalently and simultaneously with one or more signal transduction molecules, usually acting as a scaffold to bring these molecules into close proximity either using their own SH2/SH3 domains (e.g. Grb2) or those of their target molecules (e.g. SAM68).
14 Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI)
(4 more)
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).
14 Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI)
(4 more)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
13 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(3 more)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
12 Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS)
(2 more)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
12 Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA)
(2 more)
Poly(A) binding GO:0008143
Interacting selectively and non-covalently with a sequence of adenylyl residues in an RNA molecule, such as the poly(A) tail, a sequence of adenylyl residues at the 3' end of eukaryotic mRNA.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Poly(U) RNA binding GO:0008266
Interacting selectively and non-covalently with a sequence of uracil residues in an RNA molecule.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Protein domain specific binding GO:0019904
Interacting selectively and non-covalently with a specific domain of a protein.
12 Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI)
(2 more)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
12 Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI) Q07666 (/IPI)
(2 more)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
3 Q60749 (/ISS) Q8UUW7 (/ISS) Q91V33 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 Q60749 (/ISO)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 Q91V33 (/TAS)
SH3/SH2 adaptor activity GO:0005070
Interacting selectively and non-covalently and simultaneously with one or more signal transduction molecules, usually acting as a scaffold to bring these molecules into close proximity either using their own SH2/SH3 domains (e.g. Grb2) or those of their target molecules (e.g. SAM68).
1 Q60749 (/ISO)
SH3/SH2 adaptor activity GO:0005070
Interacting selectively and non-covalently and simultaneously with one or more signal transduction molecules, usually acting as a scaffold to bring these molecules into close proximity either using their own SH2/SH3 domains (e.g. Grb2) or those of their target molecules (e.g. SAM68).
1 Q8UUW7 (/ISS)
Poly(A) binding GO:0008143
Interacting selectively and non-covalently with a sequence of adenylyl residues in an RNA molecule, such as the poly(A) tail, a sequence of adenylyl residues at the 3' end of eukaryotic mRNA.
1 Q60749 (/ISO)
Poly(U) RNA binding GO:0008266
Interacting selectively and non-covalently with a sequence of uracil residues in an RNA molecule.
1 Q60749 (/ISO)
SH3 domain binding GO:0017124
Interacting selectively and non-covalently with a SH3 domain (Src homology 3) of a protein, small protein modules containing approximately 50 amino acid residues found in a great variety of intracellular or membrane-associated proteins.
1 Q91V33 (/IDA)
SH3 domain binding GO:0017124
Interacting selectively and non-covalently with a SH3 domain (Src homology 3) of a protein, small protein modules containing approximately 50 amino acid residues found in a great variety of intracellular or membrane-associated proteins.
1 Q60749 (/ISO)
Protein domain specific binding GO:0019904
Interacting selectively and non-covalently with a specific domain of a protein.
1 Q60749 (/ISO)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
1 Q60749 (/ISO)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
1 Q91V33 (/IDA)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
1 Q60749 (/ISO)

There are 25 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
Cell surface receptor signaling pathway GO:0007166
A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
14 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(4 more)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
14 Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS)
(4 more)
Regulation of RNA export from nucleus GO:0046831
Any process that modulates the frequency, rate or extent of the directed movement of RNA from the nucleus to the cytoplasm.
14 Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS)
(4 more)
G2/M transition of mitotic cell cycle GO:0000086
The mitotic cell cycle transition by which a cell in G2 commits to M phase. The process begins when the kinase activity of M cyclin/CDK complex reaches a threshold high enough for the cell cycle to proceed. This is accomplished by activating a positive feedback loop that results in the accumulation of unphosphorylated and active M cyclin/CDK complex.
13 Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS) Q07666 (/ISS)
(3 more)
G1/S transition of mitotic cell cycle GO:0000082
The mitotic cell cycle transition by which a cell in G1 commits to S phase. The process begins with the build up of G1 cyclin-dependent kinase (G1 CDK), resulting in the activation of transcription of G1 cyclins. The process ends with the positive feedback of the G1 cyclins on the G1 CDK which commits the cell to S phase, in which DNA replication is initiated.
12 Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS)
(2 more)
Regulation of alternative mRNA splicing, via spliceosome GO:0000381
Any process that modulates the frequency, rate or extent of alternative splicing of nuclear mRNAs.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
MRNA processing GO:0006397
Any process involved in the conversion of a primary mRNA transcript into one or more mature mRNA(s) prior to translation into polypeptide.
12 Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS)
(2 more)
Positive regulation of translational initiation GO:0045948
Any process that activates or increases the frequency, rate or extent of translational initiation.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Positive regulation of RNA export from nucleus GO:0046833
Any process that activates or increases the frequency, rate or extent of directed movement of RNA from the nucleus into the cytoplasm.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Protein complex oligomerization GO:0051259
The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of component monomers; protein oligomers may be composed of different or identical monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Regulation of alternative mRNA splicing, via spliceosome GO:0000381
Any process that modulates the frequency, rate or extent of alternative splicing of nuclear mRNAs.
3 Q60749 (/ISS) Q8UUW7 (/ISS) Q91V33 (/ISS)
Positive regulation of translational initiation GO:0045948
Any process that activates or increases the frequency, rate or extent of translational initiation.
3 Q60749 (/ISS) Q8UUW7 (/ISS) Q91V33 (/ISS)
Positive regulation of RNA export from nucleus GO:0046833
Any process that activates or increases the frequency, rate or extent of directed movement of RNA from the nucleus into the cytoplasm.
3 Q60749 (/ISS) Q8UUW7 (/ISS) Q91V33 (/ISS)
G2/M transition of mitotic cell cycle GO:0000086
The mitotic cell cycle transition by which a cell in G2 commits to M phase. The process begins when the kinase activity of M cyclin/CDK complex reaches a threshold high enough for the cell cycle to proceed. This is accomplished by activating a positive feedback loop that results in the accumulation of unphosphorylated and active M cyclin/CDK complex.
1 Q8UUW7 (/IDA)
Regulation of alternative mRNA splicing, via spliceosome GO:0000381
Any process that modulates the frequency, rate or extent of alternative splicing of nuclear mRNAs.
1 Q60749 (/ISO)
Cell surface receptor signaling pathway GO:0007166
A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
1 Q60749 (/ISO)
Cell surface receptor signaling pathway GO:0007166
A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
1 Q8UUW7 (/ISS)
Spermatogenesis GO:0007283
The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
1 Q91V33 (/IEP)
Regulation of signal transduction GO:0009966
Any process that modulates the frequency, rate or extent of signal transduction.
1 Q91V33 (/NAS)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
1 Q60749 (/IDA)
Positive regulation of translational initiation GO:0045948
Any process that activates or increases the frequency, rate or extent of translational initiation.
1 Q60749 (/ISO)
Regulation of RNA export from nucleus GO:0046831
Any process that modulates the frequency, rate or extent of the directed movement of RNA from the nucleus to the cytoplasm.
1 Q60749 (/IDA)
Positive regulation of RNA export from nucleus GO:0046833
Any process that activates or increases the frequency, rate or extent of directed movement of RNA from the nucleus into the cytoplasm.
1 Q60749 (/ISO)
Regulation of mRNA splicing, via spliceosome GO:0048024
Any process that modulates the frequency, rate or extent of mRNA splicing via a spliceosomal mechanism.
1 Q60749 (/IDA)
Protein complex oligomerization GO:0051259
The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of component monomers; protein oligomers may be composed of different or identical monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.
1 Q60749 (/ISO)

There are 16 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
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.
14 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(4 more)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
13 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(3 more)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
13 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(3 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
12 Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA) Q07666 (/IDA)
(2 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
12 Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS)
(2 more)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
12 Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS) Q07666 (/TAS)
(2 more)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
12 Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA) Q07666 (/HDA)
(2 more)
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.
3 Q60749 (/ISS) Q8UUW7 (/ISS) Q91V33 (/ISS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
3 Q60749 (/ISS) Q8UUW7 (/ISS) Q91V33 (/ISS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 Q60749 (/ISS) Q8UUW7 (/ISS)
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.
1 Q60749 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q60749 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q60749 (/ISO)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 Q60749 (/ISO)
Grb2-Sos complex GO:0070618
A protein complex that contains Grb2 and the guanine nucleotide exchange factor Sos (or an ortholog thereof, such as mSos1), and is involved in linking EGFR activation to the p21-Ras pathway.
1 Q91V33 (/IDA)
Grb2-Sos complex GO:0070618
A protein complex that contains Grb2 and the guanine nucleotide exchange factor Sos (or an ortholog thereof, such as mSos1), and is involved in linking EGFR activation to the p21-Ras pathway.
1 Q60749 (/ISO)
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