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:

"
RNA-binding S4 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 4: 40s ribosomal protein s9

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 6 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.
8 O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) P05755 (/IDA) P05755 (/IDA) Q9LXG1 (/IDA) Q9LXG1 (/IDA)
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).
4 Q9FLF0 (/IPI) Q9FLF0 (/IPI) Q9LXG1 (/IPI) Q9LXG1 (/IPI)
RRNA binding GO:0019843
Interacting selectively and non-covalently with ribosomal RNA.
4 O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) O13516 (/IDA)
RRNA binding GO:0019843
Interacting selectively and non-covalently with ribosomal RNA.
4 O13516 (/IMP) O13516 (/IMP) O13516 (/IMP) O13516 (/IMP)
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.
2 Q9LXG1 (/IDA) Q9LXG1 (/IDA)
Structural constituent of ribosome GO:0003735
The action of a molecule that contributes to the structural integrity of the ribosome.
2 O59675 (/ISO) Q09757 (/ISO)

There are 6 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
Maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) GO:0000462
Any process involved in the maturation of a precursor Small SubUnit (SSU) ribosomal RNA (rRNA) molecule into a mature SSU-rRNA molecule from the pre-rRNA molecule originally produced as a tricistronic rRNA transcript that contains the Small Subunit (SSU) rRNA, 5.8S rRNA, and the Large Subunit (LSU) in that order from 5' to 3' along the primary transcript.
6 O13516 (/IGI) O13516 (/IGI) O13516 (/IGI) O13516 (/IGI) P05755 (/IGI) P05755 (/IGI)
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 O13516 (/IC) O13516 (/IC) O13516 (/IC) O13516 (/IC)
RRNA methylation GO:0031167
The posttranscriptional addition of methyl groups to specific residues in an rRNA molecule.
4 O13516 (/TAS) O13516 (/TAS) O13516 (/TAS) O13516 (/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 O59675 (/ISO) Q09757 (/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 O59675 (/ISO) Q09757 (/ISO)
Positive regulation of translational fidelity GO:0045903
Any process that increases the ability of the translational apparatus to interpret the genetic code.
2 P05755 (/IMP) P05755 (/IMP)

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.
8 O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) P05755 (/IDA) P05755 (/IDA) Q9LXG1 (/IDA) Q9LXG1 (/IDA)
90S preribosome GO:0030686
A large ribonucleoprotein complex considered to be the earliest preribosomal complex. In S. cerevisiae, it has a size of 90S and consists of the 35S pre-rRNA, early-associating ribosomal proteins most of which are part of the small ribosomal subunit, the U3 snoRNA and associated proteins.
6 O13516 (/HDA) O13516 (/HDA) O13516 (/HDA) O13516 (/HDA) P05755 (/HDA) P05755 (/HDA)
Small-subunit processome GO:0032040
A large ribonucleoprotein complex that is an early preribosomal complex. In S. cerevisiae, it has a size of 80S and consists of the 35S pre-rRNA, early-associating ribosomal proteins most of which are part of the small ribosomal subunit, the U3 snoRNA and associated proteins.
6 O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) O13516 (/IDA) P05755 (/IDA) P05755 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
4 O13516 (/TAS) O13516 (/TAS) O13516 (/TAS) O13516 (/TAS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
4 O13516 (/HDA) O13516 (/HDA) O13516 (/HDA) O13516 (/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.
4 Q9FLF0 (/IDA) Q9FLF0 (/IDA) Q9LXG1 (/IDA) Q9LXG1 (/IDA)
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.
4 Q9FLF0 (/IDA) Q9FLF0 (/IDA) Q9LXG1 (/IDA) Q9LXG1 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
4 Q9FLF0 (/IDA) Q9FLF0 (/IDA) Q9LXG1 (/IDA) Q9LXG1 (/IDA)
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.
2 Q9LXG1 (/IDA) Q9LXG1 (/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.
2 Q9LXG1 (/IDA) Q9LXG1 (/IDA)
Vacuolar membrane GO:0005774
The lipid bilayer surrounding the vacuole and separating its contents from the cytoplasm of the cell.
2 Q9LXG1 (/IDA) Q9LXG1 (/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.
2 O59675 (/HDA) Q09757 (/HDA)
Chloroplast GO:0009507
A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma.
2 Q9LXG1 (/IDA) Q9LXG1 (/IDA)
Cytosolic ribosome GO:0022626
A ribosome located in the cytosol.
2 Q9LXG1 (/IDA) Q9LXG1 (/IDA)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
2 O59675 (/ISO) Q09757 (/ISO)
Polysomal ribosome GO:0042788
A ribosome bound to mRNA that forms part of a polysome.
2 Q9LXG1 (/IDA) Q9LXG1 (/IDA)
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