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:

"
Proteasome activator pa28, C-terminal 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 1: Proteasome activator complex subunit 3

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
P53 binding GO:0002039
Interacting selectively and non-covalently with one of the p53 family of proteins.
164 P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS)
(154 more)
MDM2/MDM4 family protein binding GO:0097371
Interacting selectively and non-covalently with any isoform of the MDM2/MDM4 protein family, comprising negative regulators of p53.
164 P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS)
(154 more)
Endopeptidase activator activity GO:0061133
Increases the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
55 P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA)
(45 more)
P53 binding GO:0002039
Interacting selectively and non-covalently with one of the p53 family of proteins.
54 P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA)
(44 more)
P53 binding GO:0002039
Interacting selectively and non-covalently with one of the p53 family of proteins.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
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).
54 P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI)
(44 more)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
54 P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI) P61289 (/IPI)
(44 more)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
Endopeptidase activator activity GO:0061133
Increases the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
MDM2/MDM4 family protein binding GO:0097371
Interacting selectively and non-covalently with any isoform of the MDM2/MDM4 protein family, comprising negative regulators of p53.
54 P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA)
(44 more)
MDM2/MDM4 family protein binding GO:0097371
Interacting selectively and non-covalently with any isoform of the MDM2/MDM4 protein family, comprising negative regulators of p53.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
Endopeptidase inhibitor activity GO:0004866
Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
1 Q9V3P3 (/IDA)

There are 31 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
Negative regulation of extrinsic apoptotic signaling pathway GO:2001237
Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway.
164 P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS) P61290 (/ISS)
(154 more)
Regulation of proteasomal protein catabolic process GO:0061136
Any process that modulates the rate, frequency, or extent of the chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds that is mediated by the proteasome.
55 P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA)
(45 more)
MAPK cascade GO:0000165
An intracellular protein kinase cascade containing at least a MAPK, a MAPKK and a MAP3K. The cascade can also contain an additional tiers: the upstream MAP4K. The kinases in each tier phosphorylate and activate the kinase in the downstream tier to transmit a signal within a cell.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Protein polyubiquitination GO:0000209
Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Stimulatory C-type lectin receptor signaling pathway GO:0002223
Any series of molecular signals generated as a consequence of binding to a C-type lectin receptor capable of cellular activation.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent GO:0002479
The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class I protein complex following intracellular transport via a TAP (transporter associated with antigen processing) pathway. The peptide is typically a fragment of a larger exogenous protein which has been degraded within the cell and is dependent on TAP transport from the cytosol to ER for association with the MHC class I molecule. Class I here refers to classical class I molecules.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Regulation of cellular amino acid metabolic process GO:0006521
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways involving amino acids.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Negative regulation of G2/M transition of mitotic cell cycle GO:0010972
Any signalling pathway that decreases or inhibits the activity of a cell cycle cyclin-dependent protein kinase to modulate the switch from G2 phase to M phase of the mitotic cell cycle.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Anaphase-promoting complex-dependent catabolic process GO:0031145
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, with ubiquitin-protein ligation catalyzed by the anaphase-promoting complex, and mediated by the proteasome.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
SCF-dependent proteasomal ubiquitin-dependent protein catabolic process GO:0031146
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, with ubiquitin-protein ligation catalyzed by an SCF (Skp1/Cul1/F-box protein) complex, and mediated by the proteasome.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Tumor necrosis factor-mediated signaling pathway GO:0033209
A series of molecular signals initiated by the binding of a tumor necrosis factor to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
NIK/NF-kappaB signaling GO:0038061
The process in which a signal is passed on to downstream components within the cell through the NIK-dependent processing and activation of NF-KappaB. Begins with activation of the NF-KappaB-inducing kinase (NIK), which in turn phosphorylates and activates IkappaB kinase alpha (IKKalpha). IKKalpha phosphorylates the NF-Kappa B2 protein (p100) leading to p100 processing and release of an active NF-KappaB (p52).
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Fc-epsilon receptor signaling pathway GO:0038095
A series of molecular signals initiated by the binding of the Fc portion of immunoglobulin E (IgE) to an Fc-epsilon receptor on the surface of a signal-receiving cell, and ending with regulation of a downstream cellular process, e.g. transcription. The Fc portion of an immunoglobulin is its C-terminal constant region.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Proteasome-mediated ubiquitin-dependent protein catabolic process GO:0043161
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Regulation of mRNA stability GO:0043488
Any process that modulates the propensity of mRNA molecules to degradation. Includes processes that both stabilize and destabilize mRNAs.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Post-translational protein modification GO:0043687
The process of covalently altering one or more amino acids in a protein after the protein has been completely translated and released from the ribosome.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
T cell receptor signaling pathway GO:0050852
A series of molecular signals initiated by the cross-linking of an antigen receptor on a T cell.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Transmembrane transport GO:0055085
The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Wnt signaling pathway, planar cell polarity pathway GO:0060071
The series of molecular signals initiated by binding of a Wnt protein to a receptor on the surface of the target cell where activated receptors signal via downstream effectors including C-Jun N-terminal kinase (JNK) to modulate cytoskeletal elements and control cell polarity.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Regulation of proteasomal protein catabolic process GO:0061136
Any process that modulates the rate, frequency, or extent of the chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds that is mediated by the proteasome.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
Regulation of transcription from RNA polymerase II promoter in response to hypoxia GO:0061418
Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a hypoxia stimulus.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Interleukin-1-mediated signaling pathway GO:0070498
A series of molecular signals initiated by the binding of interleukin-1 to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Negative regulation of canonical Wnt signaling pathway GO:0090090
Any process that decreases the rate, frequency, or extent of the Wnt signaling pathway through beta-catenin, the series of molecular signals initiated by binding of a Wnt protein to a frizzled family receptor on the surface of the target cell, followed by propagation of the signal via beta-catenin, and ending with a change in transcription of target genes.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Positive regulation of canonical Wnt signaling pathway GO:0090263
Any process that increases the rate, frequency, or extent of the Wnt signaling pathway through beta-catenin, the series of molecular signals initiated by binding of a Wnt protein to a frizzled family receptor on the surface of the target cell, followed by propagation of the signal via beta-catenin, and ending with a change in transcription of target genes.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Regulation of mitotic cell cycle phase transition GO:1901990
Any process that modulates the frequency, rate or extent of mitotic cell cycle phase transition.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Regulation of hematopoietic stem cell differentiation GO:1902036
Any process that modulates the frequency, rate or extent of hematopoietic stem cell differentiation.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Negative regulation of extrinsic apoptotic signaling pathway GO:2001237
Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway.
54 P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA) P61289 (/IDA)
(44 more)
Negative regulation of extrinsic apoptotic signaling pathway GO:2001237
Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 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.
1 Q9V3P3 (/IC)
Regulation of G1/S transition of mitotic cell cycle GO:2000045
Any signalling pathway that modulates the activity of a cell cycle cyclin-dependent protein kinase to modulate the switch from G1 phase to S phase of the mitotic cell cycle.
1 Q9V3P3 (/IMP)

There are 14 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.
117 A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) P61289 (/IDA)
(107 more)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
117 A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) A0A024R203 (/IDA) P61289 (/IDA)
(107 more)
Proteasome complex GO:0000502
A large multisubunit complex which catalyzes protein degradation, found in eukaryotes, archaea and some bacteria. In eukaryotes, this complex consists of the barrel shaped proteasome core complex and one or two associated proteins or complexes that act in regulating entry into or exit from the core.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 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.
54 P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA)
(44 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
54 P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO) P61290 (/ISO)
(44 more)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
54 P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS) P61289 (/TAS)
(44 more)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
54 P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA) P61289 (/HDA)
(44 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.
1 Q9V3P3 (/IDA)
Polytene chromosome puff GO:0005703
A swelling at a site along the length of a polytene chromosome, thought to be the site of active transcription.
1 Q9V3P3 (/IDA)
Polytene chromosome interband GO:0005705
A stretch of less tightly packed chromatin along the polytene chromosome, found between bands.
1 Q9V3P3 (/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.
1 Q9V3P3 (/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.
1 Q9V3P3 (/HDA)
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