Annotations: 7LO7

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth Z]		e7lo7Z1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F:	ECOD (v294.2)
C [auth L]	I-set	e7lo7L1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set	ECOD (v294.2)
B [auth H]	I-set	e7lo7H1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set	ECOD (v294.2)

Chains	Accession	Short Name	Description	Provenance Source (Version)
A [auth Z]	ARO:3004667	Staphylococcus aureus norA	NorA gene cloned from Staphylococcus aureus conferred relatively high resistance to hydrophilic quinolones such as norfloxacin, enoxacin, ofloxacin, and ciprofloxacin in S. aureus and Escherichia coli. Had low or no resistance at all to hydrophobic ones such as nalidixic acid, oxolinic acid, and sparfloxacin in S. aureus and Escherichia coli.	CARD (4.0.1)

Chains	Accession	Gene Family	Drug Class	Resistance Machanism	Provenance Source (Version)
A [auth Z]	ARO:0010002	major facilitator superfamily (MFS) antibiotic efflux pump	fluoroquinolone antibiotic	antibiotic efflux	CARD (4.0.1)

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth L]	Light Chain	IGKV1	Kappa	quinolone resistance protein nora	SAbDab (2026-05-08)
B [auth H]	Heavy Chain	IGHV3	-	quinolone resistance protein nora	SAbDab (2026-05-08)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth Z]	Quinolone resistance protein NorA	xenobiotic transmembrane transporter activity transporter activity transmembrane transporter activity	-	cell periphery cellular anatomical structure plasma membrane membrane
C [auth L]	Fab25 Light Chain	-	-	-
B [auth H]	Fab25 Heavy Chain	-	-	-

Chains	Accession	Name	Type
A [auth Z]	IPR011701	Major facilitator superfamily	Family
A [auth Z]	IPR036259	MFS transporter superfamily	Homologous Superfamily
A [auth Z]	IPR050189	Major Facilitator Superfamily Efflux Transporters	Family
A [auth Z]	IPR001958	Tetracycline resistance protein TetA/multidrug resistance protein MdtG-like	Family
A [auth Z]	IPR020846	Major facilitator superfamily domain	Domain

Chains	External Link	Type	Class	Superfamily	Family
A [auth Z]	OPM	Transmembrane	Alpha-helical polytopic	Major Facilitator Superfamily (MFS)	Monocarboxylate transporter

Chains	External Link	Comment
A [auth Z]	PDBTM	Annotated as membrane protein by PDBTM

Chains	External Link	Comment
A [auth Z]	MemProtMD	Annotated as membrane protein by MemProtMD

Chains	Resource Link	Group	Subgroup	Protein
A [auth Z]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Multi-Drug Efflux Transporters	NorA efflux pump in complex with Fab25

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

7LO7 | pdb_00007lo7