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: waiting to be named.

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 162: polypyrimidine tract-binding protein 1 isoform X2

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 10 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
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
3 P26599 (/HDA) P26599 (/HDA) P26599 (/HDA)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
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).
3 P26599 (/IPI) P26599 (/IPI) P26599 (/IPI)
Poly-pyrimidine tract binding GO:0008187
Interacting selectively and non-covalently with any stretch of pyrimidines (cytosine or uracil) in an RNA molecule.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
Pre-mRNA binding GO:0036002
Interacting selectively and non-covalently with pre-messenger RNA (pre-mRNA), an intermediate molecule between DNA and protein that may contain introns and, at least in part, encodes one or more proteins. Introns are removed from pre-mRNA to form a mRNA molecule.
3 P26599 (/IDA) P26599 (/IDA) P26599 (/IDA)
Single-stranded DNA endodeoxyribonuclease activity GO:0000014
Catalysis of the hydrolysis of ester linkages within a single-stranded deoxyribonucleic acid molecule by creating internal breaks.
1 Q00438 (/IDA)
Regulatory region RNA binding GO:0001069
Interacting selectively and non-covalently with a RNA region that regulates a nucleic acid-based process. Such processes include transcription, DNA replication, and DNA repair.
1 Q00438 (/IDA)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
1 Q00438 (/IDA)
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.
1 Q00438 (/IDA)
Sequence-specific DNA binding GO:0043565
Interacting selectively and non-covalently with DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding.
1 Q00438 (/IDA)

There are 27 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
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 P26599 (/IDA) P26599 (/IDA) P26599 (/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.
3 Q00438 (/ISS) Q29099 (/ISS) Q8WN55 (/ISS)
MRNA splicing, via spliceosome GO:0000398
The joining together of exons from one or more primary transcripts of messenger RNA (mRNA) and the excision of intron sequences, via a spliceosomal mechanism, so that mRNA consisting only of the joined exons is produced.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
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.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
RNA splicing GO:0008380
The process of removing sections of the primary RNA transcript to remove sequences not present in the mature form of the RNA and joining the remaining sections to form the mature form of the RNA.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
Fibroblast growth factor receptor signaling pathway GO:0008543
The series of molecular signals generated as a consequence of a fibroblast growth factor receptor binding to one of its physiological ligands.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
RNA metabolic process GO:0016070
The cellular chemical reactions and pathways involving RNA, ribonucleic acid, one of the two main type of nucleic acid, consisting of a long, unbranched macromolecule formed from ribonucleotides joined in 3',5'-phosphodiester linkage.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
Negative regulation of RNA splicing GO:0033119
Any process that stops, prevents, or reduces the frequency, rate or extent of RNA splicing.
3 P26599 (/IDA) P26599 (/IDA) P26599 (/IDA)
Positive regulation of protein dephosphorylation GO:0035307
Any process that activates or increases the frequency, rate or extent of removal of phosphate groups from a protein.
3 P26599 (/IMP) P26599 (/IMP) P26599 (/IMP)
Negative regulation of mRNA splicing, via spliceosome GO:0048025
Any process that stops, prevents or reduces the rate or extent of mRNA splicing via a spliceosomal mechanism.
3 P26599 (/IDA) P26599 (/IDA) P26599 (/IDA)
Negative regulation of muscle cell differentiation GO:0051148
Any process that stops, prevents, or reduces the frequency, rate or extent of muscle cell differentiation.
3 P26599 (/IDA) P26599 (/IDA) P26599 (/IDA)
Negative regulation of muscle cell differentiation GO:0051148
Any process that stops, prevents, or reduces the frequency, rate or extent of muscle cell differentiation.
3 Q00438 (/ISS) Q29099 (/ISS) Q8WN55 (/ISS)
Positive regulation of calcineurin-NFAT signaling cascade GO:0070886
Any process that activates or increases the frequency, rate or extent of signaling via the calcineurin-NFAT signaling cascade.
3 P26599 (/IMP) P26599 (/IMP) P26599 (/IMP)
IRES-dependent viral translational initiation GO:0075522
Process by which viral mRNA translation is initiated, where a domain in the 5' untranslated region (UTR) of the viral mRNA called an internal ribosome entry site (IRES) binds the host 43S preinitiation complex, circumventing regular cap-dependent translation initiation.
3 P26599 (/IMP) P26599 (/IMP) P26599 (/IMP)
Negative regulation of mRNA splicing, via spliceosome GO:0048025
Any process that stops, prevents or reduces the rate or extent of mRNA splicing via a spliceosomal mechanism.
2 Q00438 (/ISS) Q29099 (/ISS)
Nuclear-transcribed mRNA catabolic process GO:0000956
The chemical reactions and pathways resulting in the breakdown of nuclear-transcribed mRNAs in eukaryotic cells.
1 Q00438 (/IMP)
Cardiac ventricle development GO:0003231
The process whose specific outcome is the progression of a cardiac ventricle over time, from its formation to the mature structure. A cardiac ventricle receives blood from a cardiac atrium and pumps it out of the heart.
1 Q00438 (/IEP)
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.
1 Q00438 (/IMP)
Dorsal/ventral pattern formation GO:0009953
The regionalization process in which the areas along the dorsal/ventral axis are established that will lead to differences in cell differentiation. The dorsal/ventral axis is defined by a line that runs orthogonal to both the anterior/posterior and left/right axes. The dorsal end is defined by the upper or back side of an organism. The ventral end is defined by the lower or front side of an organism.
1 Q503D3 (/IMP)
Positive regulation of neuron projection development GO:0010976
Any process that increases the rate, frequency or extent of neuron projection development. Neuron projection development is the process whose specific outcome is the progression of a neuron projection over time, from its formation to the mature structure. A neuron projection is any process extending from a neural cell, such as axons or dendrites (collectively called neurites).
1 Q00438 (/IMP)
Positive regulation of insulin secretion GO:0032024
Any process that activates or increases the frequency, rate or extent of the regulated release of insulin.
1 Q00438 (/IMP)
Positive regulation of translation GO:0045727
Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of proteins by the translation of mRNA or circRNA.
1 Q00438 (/IMP)
Negative regulation of Notch signaling pathway GO:0045746
Any process that stops, prevents, or reduces the frequency, rate or extent of the Notch signaling pathway.
1 Q503D3 (/IMP)
Positive regulation of cortical granule exocytosis by positive regulation of cytosolic calcium ion concentration GO:0060472
Any process that activates or increases the frequency, rate or extent of cortical granule exocytosis by directing movement of calcium ions (Ca2+) into the cytosol.
1 Q503D3 (/IMP)
Intestinal epithelial structure maintenance GO:0060729
A tissue homeostatic process required for the maintenance of the structure of the intestinal epithelium.
1 Q503D3 (/IMP)
3'-UTR-mediated mRNA stabilization GO:0070935
An mRNA stabilization process in which one or more RNA-binding proteins associate with the 3'-untranslated region (UTR) of an mRNA.
1 Q00438 (/IDA)
Positive regulation of secretory granule organization GO:1904411
Any process that activates or increases the frequency, rate or extent of secretory granule organization.
1 Q00438 (/IMP)

There are 8 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
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
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.
3 P26599 (/TAS) P26599 (/TAS) P26599 (/TAS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
3 P26599 (/HDA) P26599 (/HDA) P26599 (/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.
3 P26599 (/HDA) P26599 (/HDA) P26599 (/HDA)
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 Q00438 (/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.
1 Q8WN55 (/ISS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q00438 (/IDA)
Neuron projection terminus GO:0044306
The specialized, terminal region of a neuron projection such as an axon or a dendrite.
1 Q00438 (/IDA)