The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_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 43661: Peptidyl-prolyl cis-trans isomerase-like 4

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 16 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.
13 F4I3B3 (/IDA) O13759 (/IDA) P32831 (/IDA) Q0WW84 (/IDA) Q5ARJ0 (/IDA) Q8VXZ9 (/IDA) Q93W34 (/IDA) Q9FPJ8 (/IDA) Q9LIN3 (/IDA) Q9SAB3 (/IDA)
(3 more)
Poly(A) binding GO:0008143
Interacting selectively and non-covalently with a sequence of adenylyl residues in an RNA molecule, such as the poly(A) tail, a sequence of adenylyl residues at the 3' end of eukaryotic mRNA.
8 F4I3B3 (/ISS) Q0WW84 (/ISS) Q8VXZ9 (/ISS) Q93W34 (/ISS) Q9FPJ8 (/ISS) Q9SAB3 (/ISS) Q9SX79 (/ISS) Q9SX80 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
5 Q15427 (/IDA) Q6Q151 (/IDA) Q8WUA2 (/IDA) Q9NX07 (/IDA) Q9SAB3 (/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).
5 O13759 (/IPI) Q09442 (/IPI) Q15427 (/IPI) Q6Q151 (/IPI) Q80VC6 (/IPI)
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 Q24534 (/ISS) Q5ARJ0 (/ISS) Q9W424 (/ISS) Q9XYZ6 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
3 Q80VC6 (/ISO) Q8QZY9 (/ISO) Q9CXG3 (/ISO)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
2 O14102 (/NAS) Q9UUE4 (/NAS)
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 O13759 (/ISO) O60176 (/ISO)
Poly(A) binding GO:0008143
Interacting selectively and non-covalently with a sequence of adenylyl residues in an RNA molecule, such as the poly(A) tail, a sequence of adenylyl residues at the 3' end of eukaryotic mRNA.
2 Q9LEB3 (/IDA) Q9LEB4 (/IDA)
TRNA binding GO:0000049
Interacting selectively and non-covalently with transfer RNA.
1 Q9QZI7 (/IDA)
Nucleotide binding GO:0000166
Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
1 Q9LIN3 (/IDA)
RNA polymerase II core binding GO:0000993
Interacting selectively and non-covalently with RNA polymerase II core enzyme, a multisubunit eukaryotic nuclear RNA polymerase typically composed of twelve subunits.
1 G5EEW6 (/IMP)
RNA polymerase II core binding GO:0000993
Interacting selectively and non-covalently with RNA polymerase II core enzyme, a multisubunit eukaryotic nuclear RNA polymerase typically composed of twelve subunits.
1 G5EEW6 (/IPI)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 Q00539 (/IPI)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 P39697 (/ISS)
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 Q00539 (/IPI)

There are 44 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
Cellular response to heat GO:0034605
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
5 F4I3B3 (/ISS) Q0WW84 (/ISS) Q8VXZ9 (/ISS) Q9SX79 (/ISS) Q9SX80 (/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.
4 Q15427 (/IC) Q24534 (/IC) Q9W424 (/IC) Q9XYZ6 (/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 Q24534 (/ISS) Q9W424 (/ISS)
Selenocysteine incorporation GO:0001514
The incorporation of selenocysteine into a peptide; uses a special tRNA that recognizes the UGA codon as selenocysteine, rather than as a termination codon. Selenocysteine is synthesized from serine before its incorporation; it is not a posttranslational modification of peptidyl-cysteine.
2 Q9NX07 (/ISS) Q9QZI7 (/ISS)
Response to cytokinin GO:0009735
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cytokinin stimulus.
2 F4I3B3 (/IDA) Q9SAB3 (/IDA)
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 Q00539 (/IMP) Q8QZY9 (/IMP)
RNA splicing, via transesterification reactions GO:0000375
Splicing of RNA via a series of two transesterification reactions.
1 Q8ILQ0 (/ISS)
RNA splicing, via transesterification reactions GO:0000375
Splicing of RNA via a series of two transesterification reactions.
1 Q15427 (/TAS)
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.
1 Q00539 (/IPI)
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.
1 Q15427 (/TAS)
Selenocysteine incorporation GO:0001514
The incorporation of selenocysteine into a peptide; uses a special tRNA that recognizes the UGA codon as selenocysteine, rather than as a termination codon. Selenocysteine is synthesized from serine before its incorporation; it is not a posttranslational modification of peptidyl-cysteine.
1 Q80VC6 (/IDA)
Nematode larval development GO:0002119
The process whose specific outcome is the progression of the nematode larva over time, from its formation to the mature structure. Nematode larval development begins with the newly hatched first-stage larva (L1) and ends with the end of the last larval stage (for example the fourth larval stage (L4) in C. elegans). Each stage of nematode larval development is characterized by proliferation of specific cell lineages and an increase in body size without alteration of the basic body plan. Nematode larval stages are separated by molts in which each stage-specific exoskeleton, or cuticle, is shed and replaced anew.
1 G5EEW6 (/IMP)
Transcription, DNA-templated GO:0006351
The cellular synthesis of RNA on a template of DNA.
1 G5EEW6 (/IDA)
MRNA splice site selection GO:0006376
Selection of a splice site by components of the assembling spliceosome.
1 Q00539 (/IMP)
MRNA splice site selection GO:0006376
Selection of a splice site by components of the assembling spliceosome.
1 O60176 (/ISO)
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 Q15427 (/TAS)
Translation GO:0006412
The cellular metabolic process in which a protein is formed, using the sequence of a mature mRNA molecule to specify the sequence of amino acids in a polypeptide chain. Translation is mediated by the ribosome, and begins with the formation of a ternary complex between aminoacylated initiator methionine tRNA, GTP, and initiation factor 2, which subsequently associates with the small subunit of the ribosome and an mRNA. Translation ends with the release of a polypeptide chain from the ribosome.
1 P39697 (/NAS)
Arginine catabolic process GO:0006527
The chemical reactions and pathways resulting in the breakdown of arginine, 2-amino-5-(carbamimidamido)pentanoic acid.
1 Q5ARJ0 (/IMP)
Mitochondrion organization GO:0007005
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a mitochondrion; includes mitochondrial morphogenesis and distribution, and replication of the mitochondrial genome as well as synthesis of new mitochondrial components.
1 P32831 (/IMP)
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.
1 Q8ILQ0 (/ISS)
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.
1 Q15427 (/TAS)
Response to cold GO:0009409
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cold stimulus, a temperature stimulus below the optimal temperature for that organism.
1 Q9LIN3 (/IMP)
Response to salt stress GO:0009651
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of salt (particularly but not exclusively sodium and chloride ions) in the environment.
1 Q9FZ84 (/IEP)
Response to ozone GO:0010193
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a ozone stimulus.
1 Q9SAB3 (/IEP)
Positive regulation of DNA-templated transcription, elongation GO:0032786
Any process that activates or increases the frequency, rate or extent of transcription elongation, the extension of an RNA molecule after transcription initiation and promoter clearance by the addition of ribonucleotides catalyzed by a DNA-dependent RNA polymerase.
1 G5EEW6 (/IMP)
Positive regulation of RNA splicing GO:0033120
Any process that activates or increases the frequency, rate or extent of RNA splicing.
1 G5EEW6 (/IMP)
Cellular response to heat GO:0034605
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 Q9LEB3 (/IDA)
Positive regulation of vulval development GO:0040026
Any process that activates or increases the frequency, rate or extent of development of the vulva. Vulval development is the process whose specific outcome is the progression of the egg-laying organ of female and hermaphrodite nematodes over time, from its formation to the mature structure. In nematodes, the vulva is formed from ventral epidermal cells during larval stages to give rise to a fully formed vulva in the adult.
1 G5EEW6 (/IMP)
MRNA cis splicing, via spliceosome GO:0045292
The joining together, after removal of an intervening sequence composed of one or more introns, of two segments of the same RNA molecule via spliceosomal catalysis to produce an mRNA composed only of exon sequences that all came from the same primary transcript.
1 O14102 (/TAS)
Positive regulation of developmental growth GO:0048639
Any process that activates, maintains or increases the rate of developmental growth.
1 G5EEW6 (/IMP)
Positive regulation of mRNA processing GO:0050685
Any process that activates or increases the frequency, rate or extent of mRNA processing.
1 G5EEW6 (/IMP)
Positive regulation of nuclear-transcribed mRNA poly(A) tail shortening GO:0060213
Any process that increases the frequency, rate or extent of poly(A) tail shortening of a nuclear-transcribed mRNA. Poly(A) tail shortening is the decrease in length of the poly(A) tail of an mRNA from full length to an oligo(A) length.
1 Q5ARJ0 (/IMP)
Positive regulation of oocyte development GO:0060282
Any process that increases the rate or extent of the process whose specific outcome is the progression of an oocyte over time, from initial commitment of the cell to its specific fate, to the fully functional differentiated cell.
1 G5EEW6 (/IMP)
3'-UTR-mediated mRNA destabilization GO:0061158
An mRNA destabilization process in which one or more RNA-binding proteins associate with the 3'-untranslated region (UTR) of an mRNA.
1 P32831 (/IDA)
3'-UTR-mediated mRNA destabilization GO:0061158
An mRNA destabilization process in which one or more RNA-binding proteins associate with the 3'-untranslated region (UTR) of an mRNA.
1 P32831 (/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 O13759 (/ISO)
Positive regulation of cellular response to oxidative stress GO:1900409
Any process that activates or increases the frequency, rate or extent of cellular response to oxidative stress.
1 Q5ARJ0 (/IMP)
Regulation of phosphorylation of RNA polymerase II C-terminal domain GO:1901407
Any process that modulates the frequency, rate or extent of phosphorylation of RNA polymerase II C-terminal domain.
1 Q9UUE4 (/IMP)
Positive regulation of histone H3-K4 trimethylation GO:1905437
Any process that activates or increases the frequency, rate or extent of histone H3-K4 trimethylation.
1 G5EEW6 (/IMP)
Positive regulation of histone H3-K79 dimethylation GO:1905473
Any process that activates or increases the frequency, rate or extent of histone H3-K79 dimethylation.
1 G5EEW6 (/IMP)
Positive regulation of gastrulation GO:2000543
Any process that activates or increases the frequency, rate or extent of gastrulation.
1 G5EEW6 (/IMP)
Regulation of mRNA stability involved in response to oxidative stress GO:2000815
A process of regulation of mRNA stability that is involved in a response to oxidative stress.
1 O13759 (/IMP)
Positive regulation of phosphorylation of RNA polymerase II C-terminal domain serine 2 residues GO:2001165
Any process that activates or increases the frequency, rate or extent of phosphorylation of RNA polymerase II C-terminal domain serine 2 residues.
1 G5EEW6 (/IMP)
Positive regulation of histone H3-K36 trimethylation GO:2001255
Any process that activates or increases the frequency, rate or extent of histone H3-K36 trimethylation.
1 G5EEW6 (/IMP)

There are 37 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
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 F4I3B3 (/IDA) O13759 (/IDA) O14102 (/IDA) O60176 (/IDA) Q0WW84 (/IDA) Q5ARJ0 (/IDA) Q6Q151 (/IDA) Q8WUA2 (/IDA) Q93W34 (/IDA) Q9FPJ8 (/IDA)
(1 more)
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.
10 F4I3B3 (/ISS) Q0WW84 (/ISS) Q8VXZ9 (/ISS) Q93W34 (/ISS) Q9FPJ8 (/ISS) Q9NX07 (/ISS) Q9QZI7 (/ISS) Q9SAB3 (/ISS) Q9SX79 (/ISS) Q9SX80 (/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.
9 G5EEW6 (/IDA) O14102 (/IDA) Q00539 (/IDA) Q6Q151 (/IDA) Q80VC6 (/IDA) Q9LEB3 (/IDA) Q9LEB4 (/IDA) Q9LIN3 (/IDA) Q9UUE4 (/IDA)
Cytoplasmic stress granule GO:0010494
A dense aggregation in the cytosol composed of proteins and RNAs that appear when the cell is under stress.
5 F4I3B3 (/ISS) Q0WW84 (/ISS) Q8VXZ9 (/ISS) Q9SX79 (/ISS) Q9SX80 (/ISS)
Cytoplasmic stress granule GO:0010494
A dense aggregation in the cytosol composed of proteins and RNAs that appear when the cell is under stress.
4 O13759 (/IDA) P32831 (/IDA) Q0WW84 (/IDA) Q9LEB3 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
3 O13759 (/IDA) Q00539 (/IDA) Q9LIN3 (/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.
3 Q24534 (/IDA) Q9W424 (/IDA) Q9XYZ6 (/IDA)
P-body GO:0000932
A focus in the cytoplasm where mRNAs may become inactivated by decapping or some other mechanism. Protein and RNA localized to these foci are involved in mRNA degradation, nonsense-mediated mRNA decay (NMD), translational repression, and RNA-mediated gene silencing.
2 O13759 (/ISO) O60176 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
2 G5EEW6 (/IDA) Q8WUA2 (/IDA)
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 Q55GD6 (/ISS) Q8ILQ0 (/ISS)
U2 snRNP GO:0005686
A ribonucleoprotein complex that contains small nuclear RNA U2.
2 Q24534 (/ISS) Q9W424 (/ISS)
U2-type prespliceosome GO:0071004
A spliceosomal complex that is formed by association of the 5' splice site with the U1 snRNP, while the branch point sequence is recognized by the U2 snRNP. The prespliceosome includes many proteins in addition to those found in the U1 and U2 snRNPs. Commitment to a given pair of 5' and 3' splice sites occurs at the time of prespliceosome formation.
2 O14102 (/ISO) O60176 (/ISO)
Commitment complex GO:0000243
A spliceosomal complex that is formed by association of the U1 snRNP with the 5' splice site of an unspliced intron in an RNA transcript.
1 Q00539 (/IPI)
Nuclear chromatin GO:0000790
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
1 Q9UUE4 (/IDA)
P-body GO:0000932
A focus in the cytoplasm where mRNAs may become inactivated by decapping or some other mechanism. Protein and RNA localized to these foci are involved in mRNA degradation, nonsense-mediated mRNA decay (NMD), translational repression, and RNA-mediated gene silencing.
1 P32831 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9CXG3 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q15427 (/TAS)
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.
1 Q15427 (/IDA)
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.
1 Q8QZY9 (/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.
1 Q15427 (/TAS)
U1 snRNP GO:0005685
A ribonucleoprotein complex that contains small nuclear RNA U1.
1 Q00539 (/IDA)
U1 snRNP GO:0005685
A ribonucleoprotein complex that contains small nuclear RNA U1.
1 O60176 (/ISO)
U2 snRNP GO:0005686
A ribonucleoprotein complex that contains small nuclear RNA U2.
1 O14102 (/IDA)
U2 snRNP GO:0005686
A ribonucleoprotein complex that contains small nuclear RNA U2.
1 O14102 (/ISO)
U12-type spliceosomal complex GO:0005689
Any spliceosomal complex that forms during the splicing of a messenger RNA primary transcript to excise an intron; the series of U12-type spliceosomal complexes is involved in the splicing of the majority of introns that contain atypical AT-AC terminal dinucleotides, as well as other non-canonical introns. The entire splice site signal, not just the terminal dinucleotides, is involved in determining which spliceosome utilizes the site.
1 Q15427 (/IDA)
U12-type spliceosomal complex GO:0005689
Any spliceosomal complex that forms during the splicing of a messenger RNA primary transcript to excise an intron; the series of U12-type spliceosomal complexes is involved in the splicing of the majority of introns that contain atypical AT-AC terminal dinucleotides, as well as other non-canonical introns. The entire splice site signal, not just the terminal dinucleotides, is involved in determining which spliceosome utilizes the site.
1 Q8QZY9 (/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 Q9ZU66 (/IDA)
Mitochondrial small ribosomal subunit GO:0005763
The smaller of the two subunits of a mitochondrial ribosome.
1 P39697 (/IDA)
Endosome GO:0005768
A vacuole to which materials ingested by endocytosis are delivered.
1 Q9FZ84 (/IDA)
Golgi apparatus GO:0005794
A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
1 Q9FZ84 (/IDA)
Trans-Golgi network GO:0005802
The network of interconnected tubular and cisternal structures located within the Golgi apparatus on the side distal to the endoplasmic reticulum, from which secretory vesicles emerge. The trans-Golgi network is important in the later stages of protein secretion where it is thought to play a key role in the sorting and targeting of secreted proteins to the correct destination.
1 Q9FZ84 (/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.
1 Q9CXG3 (/ISO)
Transcriptionally active chromatin GO:0035327
The ordered and organized complex of DNA and protein that forms regions of the chromosome that are being actively transcribed.
1 G5EEW6 (/IDA)
Mitotic spindle pole body GO:0044732
The microtubule organizing center that forms as part of the mitotic cell cycle; functionally homologous to the animal cell centrosome.
1 Q9UUE4 (/IDA)
Perinuclear region of cytoplasm GO:0048471
Cytoplasm situated near, or occurring around, the nucleus.
1 P32831 (/IDA)
U2-type prespliceosome GO:0071004
A spliceosomal complex that is formed by association of the 5' splice site with the U1 snRNP, while the branch point sequence is recognized by the U2 snRNP. The prespliceosome includes many proteins in addition to those found in the U1 and U2 snRNPs. Commitment to a given pair of 5' and 3' splice sites occurs at the time of prespliceosome formation.
1 Q00539 (/IDA)
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.
1 Q9XYZ6 (/IDA)
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