1H3L

N-terminal fragment of SigR from Streptomyces coelicolor

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	RNA POLYMERASE SIGMA FACTOR	polymer	87	10157.3	2	UniProt (O87834) Pfam (PF04542) UniProt (by SIFTS) (Q7AKG9) In PDB	STREPTOMYCES COELICOLOR A3(2)	SIGR, SCO5216, SC7E4.13
2		water	water		18.0	7	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	20314.5
All*	Total formula weight	20314.5

*Water molecules are not included.