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:

"
Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
".

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 118: 40S ribosomal protein S19

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 5 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
Structural constituent of ribosome GO:0003735
The action of a molecule that contributes to the structural integrity of the ribosome.
25 P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07281 (/IDA) P07281 (/IDA)
(15 more)
MRNA binding GO:0003729
Interacting selectively and non-covalently with messenger RNA (mRNA), an intermediate molecule between DNA and protein. mRNA includes UTR and coding sequences, but does not contain introns.
4 Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA)
Structural constituent of ribosome GO:0003735
The action of a molecule that contributes to the structural integrity of the ribosome.
4 P39018 (/TAS) P39018 (/TAS) Q7KS38 (/TAS) Q7KS38 (/TAS)
Structural constituent of ribosome GO:0003735
The action of a molecule that contributes to the structural integrity of the ribosome.
2 P39018 (/HDA) P39018 (/HDA)
Structural constituent of ribosome GO:0003735
The action of a molecule that contributes to the structural integrity of the ribosome.
2 P58234 (/ISO) P79016 (/ISO)

There are 9 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
Cytoplasmic translation GO:0002181
The chemical reactions and pathways resulting in the formation of a protein in the cytoplasm. This is a ribosome-mediated process in which the information in messenger RNA (mRNA) is used to specify the sequence of amino acids in the protein.
16 P07280 (/IC) P07280 (/IC) P07280 (/IC) P07280 (/IC) P07280 (/IC) P07280 (/IC) P07280 (/IC) P07280 (/IC) P07281 (/IC) P07281 (/IC)
(6 more)
RRNA export from nucleus GO:0006407
The directed movement of rRNA from the nucleus to the cytoplasm; the rRNA is usually in the form of ribonucleoproteins.
14 P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07281 (/IGI) P07281 (/IGI)
(4 more)
RRNA export from nucleus GO:0006407
The directed movement of rRNA from the nucleus to the cytoplasm; the rRNA is usually in the form of ribonucleoproteins.
14 P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07281 (/IMP) P07281 (/IMP)
(4 more)
Ribosomal small subunit biogenesis GO:0042274
A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of a small ribosomal subunit; includes transport to the sites of protein synthesis.
14 P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07280 (/IGI) P07281 (/IGI) P07281 (/IGI)
(4 more)
Ribosomal small subunit biogenesis GO:0042274
A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of a small ribosomal subunit; includes transport to the sites of protein synthesis.
14 P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07280 (/IMP) P07281 (/IMP) P07281 (/IMP)
(4 more)
Cytoplasmic translation GO:0002181
The chemical reactions and pathways resulting in the formation of a protein in the cytoplasm. This is a ribosome-mediated process in which the information in messenger RNA (mRNA) is used to specify the sequence of amino acids in the protein.
4 P39018 (/TAS) P39018 (/TAS) Q7KS38 (/TAS) Q7KS38 (/TAS)
Cytoplasmic translation GO:0002181
The chemical reactions and pathways resulting in the formation of a protein in the cytoplasm. This is a ribosome-mediated process in which the information in messenger RNA (mRNA) is used to specify the sequence of amino acids in the protein.
2 P58234 (/ISO) P79016 (/ISO)
Ribosome biogenesis GO:0042254
A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of ribosome subunits; includes transport to the sites of protein synthesis.
2 P58234 (/ISO) P79016 (/ISO)
Ribosomal small subunit biogenesis GO:0042274
A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of a small ribosomal subunit; includes transport to the sites of protein synthesis.
1 P27073 (/ISS)

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
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
25 P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07280 (/IDA) P07281 (/IDA) P07281 (/IDA)
(15 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.
11 Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA)
(1 more)
Plasmodesma GO:0009506
A fine cytoplasmic channel, found in all higher plants, that connects the cytoplasm of one cell to that of an adjacent cell.
7 Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA)
Cytosolic ribosome GO:0022626
A ribosome located in the cytosol.
7 Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA)
Polysomal ribosome GO:0042788
A ribosome bound to mRNA that forms part of a polysome.
7 Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA)
Nucleolus GO:0005730
A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
4 Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA)
Vacuole GO:0005773
A closed structure, found only in eukaryotic cells, that is completely surrounded by unit membrane and contains liquid material. Cells contain one or several vacuoles, that may have different functions from each other. Vacuoles have a diverse array of functions. They can act as a storage organelle for nutrients or waste products, as a degradative compartment, as a cost-effective way of increasing cell size, and as a homeostatic regulator controlling both turgor pressure and pH of the cytosol.
4 Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA) Q9FNP8 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
4 Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA) Q9LF30 (/IDA)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
4 P39018 (/TAS) P39018 (/TAS) Q7KS38 (/TAS) Q7KS38 (/TAS)
Cell wall GO:0005618
The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, most prokaryotic cells and some protozoan parasites, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan; in protozoan parasites such as Giardia species, it's made of carbohydrates and proteins.
3 Q9SGA6 (/IDA) Q9SGA6 (/IDA) Q9SGA6 (/IDA)
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 P58234 (/HDA) P79016 (/HDA)
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 P58234 (/HDA) P79016 (/HDA)
Cytosolic ribosome GO:0022626
A ribosome located in the cytosol.
2 P39018 (/HDA) P39018 (/HDA)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
2 P58234 (/ISO) P79016 (/ISO)
Nucleolus GO:0005730
A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
1 P58234 (/HDA)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
1 P27073 (/ISS)