Term Information [More information on sigma factor activity]

Accession
GO:0016987
Name
sigma factor activity
Ontology
molecular_function
Synonyms
sigma transcription factor
Definition
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. Source: GOC:txnOH, GOC:krc
Comment
None
History
See term history for GO:0016987 at QuickGO
Subset
gosubset_prok
Community
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Feedback
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Graph of GO:0016987 from QuickGO

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Ancestors of sigma factor activity (GO:0016987)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
sigma factor activity [Inferred part_of relation] part_of (inferred) biological_process (GO:0008150)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular process (GO:0009987)
sigma factor activity [Inferred related_to relation] related_to (inferred) metabolic process (GO:0008152)
sigma factor activity [Inferred part_of relation] part_of (inferred) biological regulation (GO:0065007)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular metabolic process (GO:0044237)
sigma factor activity [Inferred related_to relation] related_to (inferred) nitrogen compound metabolic process (GO:0006807)
sigma factor activity [Inferred related_to relation] related_to (inferred) organic substance metabolic process (GO:0071704)
sigma factor activity [Inferred related_to relation] related_to (inferred) biosynthetic process (GO:0009058)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular aromatic compound metabolic process (GO:0006725)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular nitrogen compound metabolic process (GO:0034641)
sigma factor activity [Inferred related_to relation] related_to (inferred) heterocycle metabolic process (GO:0046483)
sigma factor activity [Inferred related_to relation] related_to (inferred) organic cyclic compound metabolic process (GO:1901360)
sigma factor activity [Inferred related_to relation] related_to (inferred) primary metabolic process (GO:0044238)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of biological process (GO:0050789)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular biosynthetic process (GO:0044249)
sigma factor activity [Inferred related_to relation] related_to (inferred) macromolecule metabolic process (GO:0043170)
sigma factor activity [Inferred related_to relation] related_to (inferred) nucleobase-containing compound metabolic process (GO:0006139)
sigma factor activity [Inferred related_to relation] related_to (inferred) organic substance biosynthetic process (GO:1901576)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of cellular process (GO:0050794)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of metabolic process (GO:0019222)
sigma factor activity [Inferred related_to relation] related_to (inferred) aromatic compound biosynthetic process (GO:0019438)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular macromolecule metabolic process (GO:0044260)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular nitrogen compound biosynthetic process (GO:0044271)
sigma factor activity [Inferred related_to relation] related_to (inferred) heterocycle biosynthetic process (GO:0018130)
sigma factor activity [Inferred related_to relation] related_to (inferred) nucleic acid metabolic process (GO:0090304)
sigma factor activity [Inferred related_to relation] related_to (inferred) organic cyclic compound biosynthetic process (GO:1901362)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of cellular metabolic process (GO:0031323)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of nitrogen compound metabolic process (GO:0051171)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of primary metabolic process (GO:0080090)
sigma factor activity [Inferred related_to relation] related_to (inferred) macromolecule biosynthetic process (GO:0009059)
sigma factor activity [Inferred related_to relation] related_to (inferred) nucleobase-containing compound biosynthetic process (GO:0034654)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of biosynthetic process (GO:0009889)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of macromolecule metabolic process (GO:0060255)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of nucleobase-containing compound metabolic process (GO:0019219)
sigma factor activity [Inferred related_to relation] related_to (inferred) RNA metabolic process (GO:0016070)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of cellular biosynthetic process (GO:0031326)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of macromolecule biosynthetic process (GO:0010556)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of RNA metabolic process (GO:0051252)
sigma factor activity [Inferred related_to relation] related_to (inferred) RNA biosynthetic process (GO:0032774)
sigma factor activity [Inferred related_to relation] related_to (inferred) nucleic acid-templated transcription (GO:0097659)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of RNA biosynthetic process (GO:2001141)
sigma factor activity [Inferred related_to relation] related_to (inferred) cellular macromolecule biosynthetic process (GO:0034645)
sigma factor activity [Inferred related_to relation] related_to (inferred) gene expression (GO:0010467)
sigma factor activity [Inferred is_a relation] is_a (inferred) molecular_function (GO:0003674)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of nucleic acid-templated transcription (GO:1903506)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of cellular macromolecule biosynthetic process (GO:2000112)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of gene expression (GO:0010468)
sigma factor activity [Inferred is_a relation] is_a (inferred) transcription factor activity, protein binding (GO:0000988)
sigma factor activity [Inferred related_to relation] related_to (inferred) transcription, DNA-templated (GO:0006351)
sigma factor activity [Inferred part_of relation] part_of (inferred) regulation of transcription, DNA-templated (GO:0006355)
sigma factor activity [Inferred is_a relation] is_a (inferred) transcription factor activity, core RNA polymerase binding (GO:0000990)
sigma factor activity [is_a relation] is_a  core DNA-dependent RNA polymerase binding promoter specificity activity (GO:0000996)
Children of sigma factor activity (GO:0016987)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
plastid sigma factor activity (GO:0001053) [is_a relation] is_a  sigma factor activity
None.