6 Parents
| Identifier | Name | Description |
|---|---|---|
| GO:0016987 | sigma factor activity | A sigma factor is the promoter specificity subunit of eubacterial-type multisubunit RNA polymerases, those whose core subunit composition is often described as alpha(2)-beta-beta-prime. (This type of multisubunit RNA polymerase complex is known to be found in eubacteria and plant plastids). Although sigma does not bind DNA on its own, when combined with the core to form the holoenzyme, this binds specifically to promoter sequences, with the sigma factor making sequence specific contacts with the promoter elements. The sigma subunit is released from the elongating form of the polymerase and is thus free to act catalytically for multiple RNA polymerase core enzymes. |
| GO:0003674 | molecular_function | Elemental activities, such as catalysis or binding, describing the actions of a gene product at the molecular level. A given gene product may exhibit one or more molecular functions. |
| GO:0000988 | protein binding transcription factor activity | Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules), in order to modulate transcription. A protein binding transcription factor may or may not also interact with the template nucleic acid (either DNA or RNA) as well. |
| GO:0000990 | core RNA polymerase binding transcription factor activity | Interacting selectively and non-covalently with an RNA polymerase in order to modulate transcription. A protein binding transcription factor may or may not also interact with the template nucleic acid (either DNA or RNA) as well. |
| GO:0000996 | core DNA-dependent RNA polymerase binding promoter specificity activity | Interacting selectively and non-covalently with a DNA-dependent core RNA polymerase to form a holoenzyme complex and also, while present in the holoenzyme, interacting with promoter sequences in order to confer sequence specific recognition of promoter DNA sequence motifs. |
| GO:0001053 | plastid sigma factor activity | Interacting selectively and non-covalently with a plastid PEP core RNA polymerase to form a holoenzyme complex and also, while present in the holoenzyme, interacting with promoter sequences in order to confer sequence specific recognition of plastid PEP core promoter DNA sequence motifs. |
5 Relations
| Relationship |
Parent Term . Identifier |
Child Term . Identifier |
|---|---|---|
| is_a | GO:0016987 | GO:0001053 |
| is_a | GO:0003674 | GO:0001053 |
| is_a | GO:0000990 | GO:0001053 |
| is_a | GO:0000996 | GO:0001053 |
| is_a | GO:0000988 | GO:0001053 |
