GO Term : GO:0000418 DNA-directed RNA polymerase IV complex GO

Namespace:  cellular_component Obsolete:  false
description  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.

0 Cross References

0 Data Sets

1 Ontology

Name
GO

0 Ontology Annotations

28 Parents

Identifier Name Description
GO:0005634 nucleus 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.
GO:0043234 protein complex A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
GO:0005622 intracellular The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
GO:0043231 intracellular membrane-bounded organelle Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
GO:0030880 RNA polymerase complex Any complex that possesses RNA polymerase activity; generally comprises a catalytic subunit and one or more additional subunits.
GO:1902494 catalytic complex A protein complex which is capable of catalytic activity.
GO:0044464 cell part Any constituent part of a cell, the basic structural and functional unit of all organisms.
GO:0044424 intracellular part Any constituent part of the living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
GO:0032991 macromolecular complex A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which the constituent parts function together.
GO:0005575 cellular_component The part of a cell or its extracellular environment in which a gene product is located. A gene product may be located in one or more parts of a cell and its location may be as specific as a particular macromolecular complex, that is, a stable, persistent association of macromolecules that function together.
GO:0005623 cell The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope.
GO:0044428 nuclear part Any constituent part of the nucleus, a membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated.
GO:0043227 membrane-bounded organelle Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
GO:0043226 organelle Organized structure of distinctive morphology and function. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, and prokaryotic structures such as anammoxosomes and pirellulosomes. Excludes the plasma membrane.
GO:0043229 intracellular organelle Organized structure of distinctive morphology and function, occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton. Excludes the plasma membrane.
GO:0044422 organelle part Any constituent part of an organelle, an organized structure of distinctive morphology and function. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, but excludes the plasma membrane.
GO:0044446 intracellular organelle part A constituent part of an intracellular organelle, an organized structure of distinctive morphology and function, occurring within the cell. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton but excludes the plasma membrane.
GO:0044451 nucleoplasm part Any constituent part of the nucleoplasm, that part of the nuclear content other than the chromosomes or the nucleolus.
GO:0031974 membrane-enclosed lumen The enclosed volume within a sealed membrane or between two sealed membranes. Encompasses the volume enclosed by the membranes of a particular organelle, e.g. endoplasmic reticulum lumen, or the space between the two lipid bilayers of a double membrane surrounding an organelle, e.g. nuclear envelope lumen.
GO:0070013 intracellular organelle lumen An organelle lumen that is part of an intracellular organelle.
GO:0005654 nucleoplasm That part of the nuclear content other than the chromosomes or the nucleolus.
GO:0043233 organelle lumen The internal volume enclosed by the membranes of a particular organelle; includes the volume enclosed by a single organelle membrane, e.g. endoplasmic reticulum lumen, or the volume enclosed by the innermost of the two lipid bilayers of an organelle envelope, e.g. nuclear lumen.
GO:0031981 nuclear lumen The volume enclosed by the nuclear inner membrane.
GO:1990234 transferase complex A protein complex capable of catalyzing the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor).
GO:0061695 transferase complex, transferring phosphorus-containing groups A transferase complex capable of catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).
GO:0000428 DNA-directed RNA polymerase complex A protein complex that possesses DNA-directed RNA polymerase activity.
GO:0055029 nuclear DNA-directed RNA polymerase complex A protein complex, located in the nucleus, that possesses DNA-directed RNA polymerase activity.
GO:0000418 DNA-directed RNA polymerase IV complex 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.

33 Relations

Relationship
Parent Term . Identifier

Child Term . Identifier
is_a GO:0055029 GO:0000418
is_a GO:0044451 GO:0000418
part of GO:0044428 GO:0000418
part of GO:0044446 GO:0000418
part of GO:0044424 GO:0000418
part of GO:0070013 GO:0000418
is_a GO:0044428 GO:0000418
part of GO:0005634 GO:0000418
is_a GO:0061695 GO:0000418
part of GO:0005654 GO:0000418
part of GO:0031974 GO:0000418
is_a GO:0000428 GO:0000418
part of GO:0005575 GO:0000418
part of GO:0043233 GO:0000418
part of GO:0044464 GO:0000418
part of GO:0044422 GO:0000418
is_a GO:0032991 GO:0000418
part of GO:0043231 GO:0000418
part of GO:0043229 GO:0000418
is_a GO:1990234 GO:0000418
part of GO:0043226 GO:0000418
part of GO:0043227 GO:0000418
part of GO:0031981 GO:0000418
is_a GO:0044464 GO:0000418
is_a GO:0044422 GO:0000418
is_a GO:0043234 GO:0000418
is_a GO:0044424 GO:0000418
is_a GO:0044446 GO:0000418
is_a GO:0005575 GO:0000418
part of GO:0005623 GO:0000418

2 Synonyms

Name Type
DNA-directed RNA polymerase IVa complex synonym
GO:0000420 alt_id