5WUQ

Crystal structure of SigW in complex with its anti-sigma RsiW, a zinc binding form

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	ECF RNA polymerase sigma factor SigW	polymer	187	21745.3	2	UniProt (Q45585) Pfam (PF04542) Pfam (PF08281)	Bacillus subtilis subsp. subtilis str. 168	ECF sigma factor SigW,Alternative RNA polymerase sigma factor SigW,RNA polymerase sigma-W factor,Sigma-W factor
2	C, D (C, D)	Anti-sigma-W factor RsiW	polymer	80	9218.7	2	UniProt (Q45588) Pfam (PF13490)	Bacillus subtilis subsp. subtilis str. 168	Regulator of SigW,Sigma-W anti-sigma factor RsiW
3	E, F (C, D)	ZINC ION	non-polymer		65.4	2	Chemie (ZN)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	61928.1
Non-Polymers*	Number of molecules	2
	Total formula weight	130.8
All*	Total formula weight	62058.9

*Water molecules are not included.