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.
« Back to all FunFams

FunFam 153: U1 small nuclear ribonucleoprotein 70 kDa

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 12 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
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 P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI) P08621 (/IPI)
(4 more)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
12 P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA) P08621 (/HDA)
(2 more)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
12 P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP)
(2 more)
U1 snRNA binding GO:0030619
Interacting selectively and non-covalently with the U1 small nuclear RNA (U1 snRNA).
12 P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA)
(2 more)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
8 B2RZ74 (/ISS) P09406 (/ISS) P17133 (/ISS) P17133 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/ISS)
U1 snRNA binding GO:0030619
Interacting selectively and non-covalently with the U1 small nuclear RNA (U1 snRNA).
7 P09406 (/ISS) P17133 (/ISS) P17133 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
2 Q62376 (/ISO) Q62376 (/ISO)
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 P17133 (/IDA) P17133 (/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 P17133 (/ISS) P17133 (/ISS)
U1 snRNA binding GO:0030619
Interacting selectively and non-covalently with the U1 small nuclear RNA (U1 snRNA).
2 Q62376 (/ISO) Q62376 (/ISO)
U1 snRNP binding GO:1990446
Interacting selectively and non-covalently with any part of a U1 small nuclear ribonucleoprotein particle.
2 Q62376 (/ISO) Q62376 (/ISO)
U1 snRNP binding GO:1990446
Interacting selectively and non-covalently with any part of a U1 small nuclear ribonucleoprotein particle.
1 B2RZ74 (/IDA)

There are 20 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
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.
14 P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC) P08621 (/IC)
(4 more)
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.
12 P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA)
(2 more)
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.
12 P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS)
(2 more)
Regulation of ATPase activity GO:0043462
Any process that modulates the rate of ATP hydrolysis by an ATPase.
12 P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS)
(2 more)
Regulation of RNA splicing GO:0043484
Any process that modulates the frequency, rate or extent of RNA splicing, 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.
12 P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP) P08621 (/IMP)
(2 more)
Negative regulation of protein refolding GO:0061084
Any process that decreases the rate, frequency, or extent of protein refolding. Protein refolding is the process carried out by a cell that restores the biological activity of an unfolded or misfolded protein, using helper proteins such as chaperones.
12 P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS)
(2 more)
Negative regulation of chaperone-mediated autophagy GO:1904715
Any process that stops, prevents or reduces the frequency, rate or extent of chaperone-mediated autophagy.
12 P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS)
(2 more)
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.
8 B2RZ74 (/ISS) P09406 (/ISS) P17133 (/ISS) P17133 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/ISS)
Regulation of RNA splicing GO:0043484
Any process that modulates the frequency, rate or extent of RNA splicing, 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.
8 B2RZ74 (/ISS) P09406 (/ISS) P17133 (/ISS) P17133 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/ISS)
Hematopoietic stem cell differentiation GO:0060218
The process in which a relatively unspecialized cell acquires specialized features of a hematopoietic stem cell. A stem cell is a cell that retains the ability to divide and proliferate throughout life to provide progenitor cells that can differentiate into specialized cells.
3 Q1ED03 (/IMP) Q6DEM1 (/IMP) Q6DRE8 (/IMP)
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 P17133 (/HMP) P17133 (/HMP)
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 Q62376 (/ISO) Q62376 (/ISO)
Spermatogenesis GO:0007283
The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
2 P17133 (/IMP) P17133 (/IMP)
Regulation of RNA splicing GO:0043484
Any process that modulates the frequency, rate or extent of RNA splicing, 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.
2 Q62376 (/ISO) Q62376 (/ISO)
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 P17133 (/IPI) P17133 (/IPI)
Positive regulation of mRNA splicing, via spliceosome GO:0048026
Any process that activates or increases the rate or extent of mRNA splicing via a spliceosomal mechanism.
2 Q62376 (/IMP) Q62376 (/IMP)
Oogenesis GO:0048477
The complete process of formation and maturation of an ovum or female gamete from a primordial female germ cell. Examples of this process are found in Mus musculus and Drosophila melanogaster.
2 P17133 (/IMP) P17133 (/IMP)
Cellular response to retinoic acid GO:0071300
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a retinoic acid stimulus.
1 B2RZ74 (/IEP)
Cellular response to tumor necrosis factor GO:0071356
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a tumor necrosis factor stimulus.
1 B2RZ74 (/IEP)
Cellular response to transforming growth factor beta stimulus GO:0071560
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a transforming growth factor beta stimulus.
1 B2RZ74 (/IEP)

There are 19 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.
25 A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA)
(15 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
24 A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA) A0A024QZD5 (/IDA)
(14 more)
Nuclear speck GO:0016607
A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.
17 P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS) P08621 (/ISS)
(7 more)
U1 snRNP GO:0005685
A ribonucleoprotein complex that contains small nuclear RNA U1.
13 B2RZ74 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA)
(3 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
12 P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS) P08621 (/TAS)
(2 more)
Spliceosomal complex GO:0005681
Any of a series of ribonucleoprotein complexes that contain snRNA(s) and small nuclear ribonucleoproteins (snRNPs), and are formed sequentially during the spliceosomal splicing of one or more substrate RNAs, and which also contain the RNA substrate(s) from the initial target RNAs of splicing, the splicing intermediate RNA(s), to the final RNA products. During cis-splicing, the initial target RNA is a single, contiguous RNA transcript, whether mRNA, snoRNA, etc., and the released products are a spliced RNA and an excised intron, generally as a lariat structure. During trans-splicing, there are two initial substrate RNAs, the spliced leader RNA and a pre-mRNA.
12 P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA) P08621 (/IDA)
(2 more)
Spliceosomal complex GO:0005681
Any of a series of ribonucleoprotein complexes that contain snRNA(s) and small nuclear ribonucleoproteins (snRNPs), and are formed sequentially during the spliceosomal splicing of one or more substrate RNAs, and which also contain the RNA substrate(s) from the initial target RNAs of splicing, the splicing intermediate RNA(s), to the final RNA products. During cis-splicing, the initial target RNA is a single, contiguous RNA transcript, whether mRNA, snoRNA, etc., and the released products are a spliced RNA and an excised intron, generally as a lariat structure. During trans-splicing, there are two initial substrate RNAs, the spliced leader RNA and a pre-mRNA.
8 B2RZ74 (/ISS) P09406 (/ISS) P17133 (/ISS) P17133 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/ISS)
U1 snRNP GO:0005685
A ribonucleoprotein complex that contains small nuclear RNA U1.
7 P09406 (/ISS) P17133 (/ISS) P17133 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/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.
5 P09406 (/ISS) Q1RMR2 (/ISS) Q62376 (/ISS) Q62376 (/ISS) Q66II8 (/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.
2 P17133 (/IC) P17133 (/IC)
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 Q62376 (/ISO) Q62376 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
2 Q62376 (/ISO) Q62376 (/ISO)
Spliceosomal complex GO:0005681
Any of a series of ribonucleoprotein complexes that contain snRNA(s) and small nuclear ribonucleoproteins (snRNPs), and are formed sequentially during the spliceosomal splicing of one or more substrate RNAs, and which also contain the RNA substrate(s) from the initial target RNAs of splicing, the splicing intermediate RNA(s), to the final RNA products. During cis-splicing, the initial target RNA is a single, contiguous RNA transcript, whether mRNA, snoRNA, etc., and the released products are a spliced RNA and an excised intron, generally as a lariat structure. During trans-splicing, there are two initial substrate RNAs, the spliced leader RNA and a pre-mRNA.
2 Q62376 (/ISO) Q62376 (/ISO)
U1 snRNP GO:0005685
A ribonucleoprotein complex that contains small nuclear RNA U1.
2 Q62376 (/ISO) Q62376 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 Q62376 (/ISO) Q62376 (/ISO)
Nuclear speck GO:0016607
A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.
2 Q62376 (/IDA) Q62376 (/IDA)
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 P17133 (/HDA) P17133 (/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 P17133 (/HDA) P17133 (/HDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 B2RZ74 (/IDA)