# sigma factor

> class of proteins

**Wikidata**: [Q306436](https://www.wikidata.org/wiki/Q306436)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sigma_factor)  
**Source**: https://4ort.xyz/entity/sigma-factor


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)