3BR2

Crystal Structure of the Complex of Dequalinium Bound to QacR(E120Q), a Mutant of a Multidrug Binding Transcriptional Repressor

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B, D, A, E	HTH-type transcriptional regulator qacR	polymer	194	22982.0	4	UniProt (P0A0N3) Pfam (PF00440) Pfam (PF08360) In PDB	Staphylococcus aureus
2	E, B, D, A	SULFATE ION	non-polymer		96.1	25	Chemie (SO4)
3	A	DEQUALINIUM	non-polymer		456.7	1	Chemie (DEQ)
4		water	water		18.0	30	Chemie (HOH)

Sequence modifications

B, D, A, E: 1 - 188 (UniProt: P0A0N3)

PDB	External Database	Details
Ala 72	Cys 72	engineered mutation
Gln 120	Glu 120	engineered mutation
Ser 141	Cys 141	engineered mutation
His 189	-	expression tag
His 190	-	expression tag
His 191	-	expression tag
His 192	-	expression tag
His 193	-	expression tag
His 194	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	91928.2
Non-Polymers*	Number of molecules	26
	Total formula weight	2858.2
All*	Total formula weight	94786.4

*Water molecules are not included.