Annotations: 3A7K

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth D]	d3a7kd_	Membrane and cell surface proteins and peptides	Class A G protein-coupled receptor (GPCR)-like	Class A G protein-coupled receptor (GPCR)-like	automated matches	automated matches	(Natronomonas pharaonis DSM 2160 ) [TaxId: 348780 ],	SCOPe (2.08)
B	d3a7kb_	Membrane and cell surface proteins and peptides	Class A G protein-coupled receptor (GPCR)-like	Class A G protein-coupled receptor (GPCR)-like	automated matches	automated matches	(Natronomonas pharaonis DSM 2160 ) [TaxId: 348780 ],	SCOPe (2.08)
A	d3a7ka_	Membrane and cell surface proteins and peptides	Class A G protein-coupled receptor (GPCR)-like	Class A G protein-coupled receptor (GPCR)-like	automated matches	automated matches	(Natronomonas pharaonis DSM 2160 ) [TaxId: 348780 ],	SCOPe (2.08)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth D]	adh_short	e3a7kD1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: adh_short	ECOD (v295.2)
B	adh_short	e3a7kB1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: adh_short	ECOD (v295.2)
A	Bac_rhodopsin	e3a7kA1	A: alpha arrays	X: Cystatin-like	H: NTF2-like	T: NTF2-like	F: Bac_rhodopsin	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth D]	1.20.1070.10	Mainly Alpha	Up-down Bundle	Rhopdopsin 7-helix transmembrane proteins	Rhodopsin 7-helix transmembrane proteins	CATH (4.3.0)
B	1.20.1070.10	Mainly Alpha	Up-down Bundle	Rhopdopsin 7-helix transmembrane proteins	Rhodopsin 7-helix transmembrane proteins	CATH (4.3.0)
A	1.20.1070.10	Mainly Alpha	Up-down Bundle	Rhopdopsin 7-helix transmembrane proteins	Rhodopsin 7-helix transmembrane proteins	CATH (4.3.0)

Chains	Accession	Name	Description	Comments	Source
A, B, C [auth D]	PF01036	Bacteriorhodopsin-like protein (Bac_rhodopsin)	Bacteriorhodopsin-like protein	The bacterial opsins are retinal-binding proteins that provide light- dependent ion transport and sensory functions to a family of halophilic bacteria [2,3]. They are integral membrane proteins believed to contain seven transmembrane (TM) domains, th ...	The bacterial opsins are retinal-binding proteins that provide light- dependent ion transport and sensory functions to a family of halophilic bacteria [2,3]. They are integral membrane proteins believed to contain seven transmembrane (TM) domains, the last of which contains the attachment point for retinal (a conserved lysine). This family also includes distantly related proteins that do not contain the retinal binding lysine and so cannot function as opsins. Some fungal examples are: Swiss:O74870, Swiss:P25619, Swiss:P38079, Swiss:Q12117.	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C [auth D]	Halorhodopsin	passive transmembrane transporter activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity	-	cellular anatomical structure membrane

Chains	Accession	Name	Type
A, B, C [auth D]	IPR018229	Rhodopsin, retinal binding site	Binding Site
A, B, C [auth D]	IPR001425	Archaeal/bacterial/fungal rhodopsins	Family

Chains	External Link	Type	Class	Superfamily	Family
A, B, C [auth D]	OPM	Transmembrane	Alpha-helical polytopic	Rhodopsin-like receptors and pumps	Microbial and algal rhodopsins

Chains	External Link	Comment
A, B, C [auth D]	PDBTM	Annotated as membrane protein by PDBTM

Chains	External Link	Comment
A, B, C [auth D]	MemProtMD	Annotated as membrane protein by MemProtMD

Chains	Resource Link	Group	Subgroup	Protein
A, B, C [auth D]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Bacterial, Algal, Viral, and Unusual Rhodopsins	Halorhodopsin (HR)

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.

3A7K | pdb_00003a7k