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 553: Splicing factor SRp54

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 3 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
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 O61646 (/IDA) Q9VL71 (/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.
2 O61646 (/ISS) Q9VL71 (/ISS)
Poly-pyrimidine tract binding GO:0008187
Interacting selectively and non-covalently with any stretch of pyrimidines (cytosine or uracil) in an RNA molecule.
2 O61646 (/IDA) Q9VL71 (/IDA)

There are 7 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.
2 O61646 (/HMP) Q9VL71 (/HMP)
Regulation of alternative mRNA splicing, via spliceosome GO:0000381
Any process that modulates the frequency, rate or extent of alternative splicing of nuclear mRNAs.
2 O61646 (/IMP) Q9VL71 (/IMP)
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.
2 O61646 (/IC) Q9VL71 (/IC)
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.
2 O61646 (/ISS) Q9VL71 (/ISS)
Regulation of transcriptional start site selection at RNA polymerase II promoter GO:0001178
Any process that modulates the rate, frequency or extent of a process involved in the selection of the specific location within the template strand of an RNA polymerase II promoter for hybridization of the cognate ribonucleotides and formation of first phosphodiester bond within the nascent transcript.
2 O61646 (/IMP) Q9VL71 (/IMP)
Regulation of gene expression GO:0010468
Any process that modulates the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
2 O61646 (/IMP) Q9VL71 (/IMP)
Regulation of mRNA 3'-end processing GO:0031440
Any process that modulates the frequency, rate or extent of mRNA 3'-end processing, any process involved in forming the mature 3' end of an mRNA molecule.
2 O61646 (/IMP) Q9VL71 (/IMP)

There are 3 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.
2 O61646 (/IC) Q9VL71 (/IC)
Precatalytic spliceosome GO:0071011
A spliceosomal complex that is formed by the recruitment of a preassembled U5-containing tri-snRNP to the prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the associated snRNPs.
2 O61646 (/HDA) Q9VL71 (/HDA)
Catalytic step 2 spliceosome GO:0071013
A spliceosomal complex that contains three snRNPs, including U5, bound to a splicing intermediate in which the first catalytic cleavage of the 5' splice site has occurred. The precise subunit composition differs significantly from that of the catalytic step 1, or activated, spliceosome, and includes many proteins in addition to those found in the associated snRNPs.
2 O61646 (/HDA) Q9VL71 (/HDA)