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GO:0016987: sigma factor activity (Molecular function)

"Sigma factors act as the promoter specificity subunit of eubacterial and plant plastid multisubunit RNA polymerases, whose core subunit composition is often described as alpha(2)-beta-beta-prime. Although sigma does not bind DNA on its own, when combined with the core to form the holoenzyme, the sigma factor binds specifically to promoter elements. The sigma subunit is released once elongation begins." [GOC:txnOH-2018]


There are 1286 sequences with this label.

Enriched clusters
Name Species % in cluster p-value corrected p-value action
Cluster_68 Physcomitrella patens 1.38 % 0.000415 0.003734
Cluster_86 Cyanophora paradoxa 1.15 % 0.007032 0.019337
Cluster_23 Cyanophora paradoxa 0.65 % 0.012511 0.029668
Cluster_91 Marchantia polymorpha 1.79 % 0.005759 0.034553
Cluster_129 Marchantia polymorpha 1.49 % 0.006888 0.042476
Sequences (1286) (download table)

Info: GO-associations disabled for items with more than 300 associated sequences !
InterPro Domains

Family Terms