The gene ''rpoF'' (RNA polymerase, flagellum F) encodes the

sigma factor A sigma factor (σ factor or specificity factor) is a protein needed for initiation of Transcription (biology), transcription in bacteria. It is a bacterial transcription initiation factor that enables specific binding of RNA polymerase (RNAP) to g ...

''sigma-28'' (σ28, or RpoF), a protein in ''

Escherichia coli ''Escherichia coli'' ( )Wells, J. C. (2000) Longman Pronunciation Dictionary. Harlow ngland Pearson Education Ltd. is a gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus '' Escherichia'' that is commonly fo ...

'' and other species of bacteria. Depending on the bacterial species, this gene may be referred to as ''sigD'' or ''fliA''. The protein encoded by this gene has been found to be necessary for

flagellum A flagellum (; : flagella) (Latin for 'whip' or 'scourge') is a hair-like appendage that protrudes from certain plant and animal sperm cells, from fungal spores ( zoospores), and from a wide range of microorganisms to provide motility. Many pr ...

formation.

References

Escherichia coli genes {{gene-stub