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:

"
Nucleic acid-binding proteins
".

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 43: DNA-directed RNA polymerase II subunit RPB7

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
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).
12 O14459 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) Q9VFB5 (/IPI)
(2 more)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
8 P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
8 P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP)
Single-stranded RNA binding GO:0003727
Interacting selectively and non-covalently with single-stranded RNA.
8 P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA)
Single-stranded RNA binding GO:0003727
Interacting selectively and non-covalently with single-stranded RNA.
8 P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP)
Translation initiation factor binding GO:0031369
Interacting selectively and non-covalently with a translation initiation factor, any polypeptide factor involved in the initiation of ribosome-mediated translation.
8 P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI) P34087 (/IPI)
DNA-directed 5'-3' RNA polymerase activity GO:0003899
Catalysis of the reaction: nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1). Utilizes a DNA template, i.e. the catalysis of DNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time. Can initiate a chain 'de novo'.
6 Q5A8Y7 (/ISS) Q5A8Y7 (/ISS) Q5A8Y7 (/ISS) Q9VFB5 (/ISS) Q9VFB5 (/ISS) Q9VFB5 (/ISS)
DNA-directed 5'-3' RNA polymerase activity GO:0003899
Catalysis of the reaction: nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1). Utilizes a DNA template, i.e. the catalysis of DNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time. Can initiate a chain 'de novo'.
4 Q54P04 (/IGI) Q5A8Y7 (/IGI) Q5A8Y7 (/IGI) Q5A8Y7 (/IGI)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
1 Q54P04 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 O14459 (/ISM)

There are 25 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
Transcription by RNA polymerase II GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
137 P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS)
(127 more)
Transcription by RNA polymerase II GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
84 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(74 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.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Transcription-coupled nucleotide-excision repair GO:0006283
The nucleotide-excision repair process that carries out preferential repair of DNA lesions on the actively transcribed strand of the DNA duplex. In addition, the transcription-coupled nucleotide-excision repair pathway is required for the recognition and repair of a small subset of lesions that are not recognized by the global genome nucleotide excision repair pathway.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Transcription, DNA-templated GO:0006351
The cellular synthesis of RNA on a template of DNA.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Transcription by RNA polymerase II GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
42 P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA)
(32 more)
Transcription by RNA polymerase II GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
42 P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO)
(32 more)
Transcription initiation from RNA polymerase II promoter GO:0006367
Any process involved in the assembly of the RNA polymerase II preinitiation complex (PIC) at an RNA polymerase II promoter region of a DNA template, resulting in the subsequent synthesis of RNA from that promoter. The initiation phase includes PIC assembly and the formation of the first few bonds in the RNA chain, including abortive initiation, which occurs when the first few nucleotides are repeatedly synthesized and then released. Promoter clearance, or release, is the transition between the initiation and elongation phases of transcription.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Transcription elongation from RNA polymerase II promoter GO:0006368
The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase II promoter by the addition of ribonucleotides catalyzed by RNA polymerase II.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
7-methylguanosine mRNA capping GO:0006370
Addition of the 7-methylguanosine cap to the 5' end of a nascent messenger RNA transcript.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Apoptotic process GO:0006915
A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
42 P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP) P62489 (/IEP)
(32 more)
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.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
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.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Somatic stem cell population maintenance GO:0035019
Any process by which an organism retains a population of somatic stem cells, undifferentiated cells in the embryo or adult which can undergo unlimited division and give rise to cell types of the body other than those of the germ-line.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
SnRNA transcription by RNA polymerase II GO:0042795
The synthesis of small nuclear RNA (snRNA) from a DNA template by RNA Polymerase II (Pol II), originating at a Pol II promoter.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Positive regulation of viral transcription GO:0050434
Any process that activates or increases the frequency, rate or extent of viral transcription.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Regulation of gene silencing by miRNA GO:0060964
Any process that modulates the rate, frequency, or extent of the downregulation of gene expression through the action of microRNAs (miRNAs), endogenous 21-24 nucleotide small RNAs processed from stem-loop RNA precursors (pre-miRNAs). Once incorporated into a RNA-induced silencing complex (RISC), miRNAs can downregulate gene expression by either of two posttranscriptional mechanisms: RNA (often mRNA) cleavage or mRNA translational repression.
42 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(32 more)
Transcription by RNA polymerase II GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
12 P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) Q54P04 (/IGI) Q5A8Y7 (/IGI)
(2 more)
Nuclear-transcribed mRNA catabolic process, exonucleolytic GO:0000291
The chemical reactions and pathways resulting in the breakdown of the transcript body of a nuclear-transcribed mRNA that occurs when the ends are not protected by the 5'-cap or the 3'-poly(A) tail.
8 P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI) P34087 (/IGI)
Transcription initiation from RNA polymerase II promoter GO:0006367
Any process involved in the assembly of the RNA polymerase II preinitiation complex (PIC) at an RNA polymerase II promoter region of a DNA template, resulting in the subsequent synthesis of RNA from that promoter. The initiation phase includes PIC assembly and the formation of the first few bonds in the RNA chain, including abortive initiation, which occurs when the first few nucleotides are repeatedly synthesized and then released. Promoter clearance, or release, is the transition between the initiation and elongation phases of transcription.
8 P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA)
Positive regulation of translational initiation GO:0045948
Any process that activates or increases the frequency, rate or extent of translational initiation.
8 P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/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.
8 P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP) P34087 (/IMP)
Response to drug GO:0042493
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 drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
3 Q5A8Y7 (/IMP) Q5A8Y7 (/IMP) Q5A8Y7 (/IMP)
Regulation of septum digestion after cytokinesis GO:0010590
Any process that modulates the rate, frequency or extent of the process of physically separating the septal cell wall material by enzymatic digestion, that occurs after daughter cells are separated by cytokinesis.
1 O14459 (/IMP)
Telomeric repeat-containing RNA transcription by RNA polymerase II GO:0097394
The synthesis of telomeric repeat-containing RNA from a DNA template by RNA polymerase II (Pol II), originating at a Pol II promoter.
1 O14459 (/IMP)

There are 18 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
RNA polymerase II, core complex GO:0005665
RNA polymerase II, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces mRNAs, snoRNAs, and some of the snRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The largest subunit of RNA polymerase II contains an essential carboxyl-terminal domain (CTD) composed of a variable number of heptapeptide repeats (YSPTSPS). The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerases I and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.
137 P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS)
(127 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.
131 P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS) P62488 (/ISS)
(121 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
84 P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS) P62487 (/TAS)
(74 more)
RNA polymerase II, core complex GO:0005665
RNA polymerase II, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces mRNAs, snoRNAs, and some of the snRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The largest subunit of RNA polymerase II contains an essential carboxyl-terminal domain (CTD) composed of a variable number of heptapeptide repeats (YSPTSPS). The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerases I and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.
53 O14459 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P38421 (/IDA)
(43 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.
50 P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P62487 (/IDA) P62487 (/IDA)
(40 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.
42 P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO)
(32 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
42 P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA) P62487 (/IDA)
(32 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
42 P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO)
(32 more)
RNA polymerase II, core complex GO:0005665
RNA polymerase II, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces mRNAs, snoRNAs, and some of the snRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The largest subunit of RNA polymerase II contains an essential carboxyl-terminal domain (CTD) composed of a variable number of heptapeptide repeats (YSPTSPS). The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerases I and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.
42 P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO) P62488 (/ISO)
(32 more)
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.
8 P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
8 P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA) P34087 (/IDA)
RNA polymerase II, core complex GO:0005665
RNA polymerase II, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces mRNAs, snoRNAs, and some of the snRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The largest subunit of RNA polymerase II contains an essential carboxyl-terminal domain (CTD) composed of a variable number of heptapeptide repeats (YSPTSPS). The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerases I and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.
3 Q5A8Y7 (/IGI) Q5A8Y7 (/IGI) Q5A8Y7 (/IGI)
RNA polymerase II, core complex GO:0005665
RNA polymerase II, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces mRNAs, snoRNAs, and some of the snRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The largest subunit of RNA polymerase II contains an essential carboxyl-terminal domain (CTD) composed of a variable number of heptapeptide repeats (YSPTSPS). The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerases I and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.
3 Q9VFB5 (/IPI) Q9VFB5 (/IPI) Q9VFB5 (/IPI)
RNA polymerase V complex GO:0000419
RNA polymerase V is a multisubunit RNA polymerase complex found in the nucleus of plants and involved in accumulation of siRNAs and in DNA methylation-dependent silencing of endogenous repeated sequences. Pol V is composed of subunits that are paralogous or identical to the 12 subunits of Pol II. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The second largest subunit is also found in RNA polymerase IVa, while the largest subunit is found only in the IVa complex and contains an extended C-terminal domain (CTD) that includes multiple repeats of a 16 amino-acid consensus sequence as well as other sequences. The remainder of the complex is composed of smaller subunits.
2 A6QRA1 (/IDA) A6QRA1 (/IDA)
RNA polymerase IV complex GO:0000418
RNA polymerase IV is a multisubunit RNA polymerase complex found in the nucleus of plants and involved in accumulation of siRNAs and in DNA methylation-dependent silencing of endogenous repeated sequences. Pol IV is composed of subunits that are paralogous or identical to the 12 subunits of Pol II. The largest and second-largest subunits of Pol IV are the catalytic subunits and share similarity with the corresponding subunits of other eukaryotic and bacterial multisubunit RNA polymerases. The second largest subunit is also found in RNA polymerase V, while the largest subunit is found only in RNAP IV complex.
1 Q8LE42 (/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 O14459 (/HDA)
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 O14459 (/HDA)
RNA polymerase II, holoenzyme GO:0016591
A nuclear DNA-directed RNA polymerase complex containing an RNA polymerase II core enzyme as well as additional proteins and transcription factor complexes, that are capable of promoter recognition and transcription initiation from an RNA polymerase II promoter in vivo. These additional components may include general transcription factor complexes TFIIA, TFIID, TFIIE, TFIIF, or TFIIH, as well as Mediator, SWI/SNF, GCN5, or SRBs and confer the ability to recognize promoters.
1 Q54P04 (/ISS)
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