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 665 sequences with this label.

Enriched clusters
Name Species % in cluster p-value corrected p-value action
Cluster_190 Cladocopium sp. clade C 5.66 % 0.000667 0.010316
Cluster_106 Cladocopium sp. clade C 3.61 % 0.002439 0.024867
Cluster_83 Cladocopium sp. clade C 2.36 % 0.007996 0.045867
Cluster_62 Ostreococcus tauri 2.0 % 0.006521 0.041732
Sequences (665) (download table)

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

Family Terms