Sigma factor: Difference between revisions
From Proteopedia
Jump to navigationJump to search
Wally Novak (talk | contribs) No edit summary |
Wally Novak (talk | contribs) No edit summary |
||
| Line 3: | Line 3: | ||
== Overview == | == Overview == | ||
'''Sigma (σ) factor''' is the peoptide subunit needed for the initiation of RNA transcription in prokaryotic organisms<scene name='59/591940/Sigma_factor_in_enzyme/1'>as seen here</scene>. As opposed to eukaryotes, who utilize a variety of proteins to initiate gene transcription, prokaryotic transcription is initiated almost completely by a σ-factor. The large and biologically essential protein, RNA polymerase (RNAP), contains one σ-subunit, which binds <scene name='59/591940/Dna_promoter/1'>Promoter Sequences</scene>, located upstream of transcription start sites. | '''Sigma (σ) factor''' is the peoptide subunit needed for the initiation of RNA transcription in prokaryotic organisms <scene name='59/591940/Sigma_factor_in_enzyme/1'>as seen here</scene>. As opposed to eukaryotes, who utilize a variety of proteins to initiate gene transcription, prokaryotic transcription is initiated almost completely by a σ-factor. The large and biologically essential protein, RNA polymerase (RNAP), contains one σ-subunit, which binds <scene name='59/591940/Dna_promoter/1'>Promoter Sequences</scene>, located upstream of transcription start sites. | ||
== Specific Function and Structure == | == Specific Function and Structure == | ||
