3BR6

Crystal Structure of the Complex of Rhodamine 6G Bound to QacR(E120Q), a Mutant of a Multidrug Binding Transcriptional Repressor

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth D]	TetR_N	e3br6D1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: TetR_N	ECOD (1.6)
B [auth D]	TetR_C_5	e3br6D2	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: TetR_C_5	ECOD (1.6)
C [auth A]	TetR_N	e3br6A1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: TetR_N	ECOD (1.6)
C [auth A]	TetR_C_5	e3br6A2	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: TetR_C_5	ECOD (1.6)
D [auth E]	TetR_N	e3br6E1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: TetR_N	ECOD (1.6)
D [auth E]	TetR_C_5	e3br6E2	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: TetR_C_5	ECOD (1.6)
A [auth B]	TetR_N	e3br6B1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: TetR_N	ECOD (1.6)
A [auth B]	TetR_C_5	e3br6B2	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: TetR_C_5	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth D]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)
B [auth D]	1.10.357.10	Mainly Alpha	Orthogonal Bundle	Tetracycline Repressor	domain 2	CATH (4.3.0)
C [auth A]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)
C [auth A]	1.10.357.10	Mainly Alpha	Orthogonal Bundle	Tetracycline Repressor	domain 2	CATH (4.3.0)
D [auth E]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)
D [auth E]	1.10.357.10	Mainly Alpha	Orthogonal Bundle	Tetracycline Repressor	domain 2	CATH (4.3.0)
A [auth B]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)
A [auth B]	1.10.357.10	Mainly Alpha	Orthogonal Bundle	Tetracycline Repressor	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth D], C [auth A], D [auth E]	PF00440	Bacterial regulatory proteins, tetR family (TetR_N)	Bacterial regulatory proteins, tetR family	-	Domain
A [auth B], B [auth D], C [auth A], D [auth E]	PF08360	QacR-like protein, C-terminal region (TetR_C_5)	QacR-like protein, C-terminal region	This family features the C-terminal region of a number of proteins that bear similarity to the QacR protein (Swiss:P23217), a transcriptional regulator of the TetR family. QacR is able to bind various environmental agents, which include a number of c ...	This family features the C-terminal region of a number of proteins that bear similarity to the QacR protein (Swiss:P23217), a transcriptional regulator of the TetR family. QacR is able to bind various environmental agents, which include a number of cationic lipophilic compounds, and thus regulate the transcription of QacA (Swiss:P23215), a multidrug efflux pump [1]. The C-terminal region contains the multifaceted, expansive drug-binding pocket, which is composed of several separate, but linked, binding sites [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth D], C [auth A], D [auth E]	HTH-type transcriptional regulator qacR	DNA binding binding organic cyclic compound binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity	regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process negative regulation of cellular process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process cellular process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth D], C [auth A], D [auth E]	IPR023772	DNA-binding HTH domain, TetR-type, conserved site	Conserved Site
A [auth B], B [auth D], C [auth A], D [auth E]	IPR001647	DNA-binding HTH domain, TetR-type	Domain
A [auth B], B [auth D], C [auth A], D [auth E]	IPR036271	Tetracyclin repressor-like, C-terminal domain superfamily	Homologous Superfamily
A [auth B], B [auth D], C [auth A], D [auth E]	IPR013571	Transcription regulator QacR, C-terminal	Domain
A [auth B], B [auth D], C [auth A], D [auth E]	IPR009057	Homeobox-like domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.