Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyBacteriorhodopsin-like 8029990 4001859 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyG protein-coupled receptor-like 8042369 3000473 SCOP2 (2022-06-29)
BSCOP2 FamilyHtr2 transmembrane domain-like 8029991 4001165 SCOP2 (2022-06-29)
BSCOP2 SuperfamilyHtr2 transmembrane domain-like 8042370 3000967 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ABac_rhodopsine1h2sA1 A: alpha bundlesX: Family A G protein-coupled receptor-like (From Topology)H: Family A G protein-coupled receptor-like (From Topology)T: Family A G protein-coupled receptor-likeF: Bac_rhodopsinECOD (1.6)
BEUF08777e1h2sB1 A: extended segmentsX: Sensor proteins transmembrane domainsH: Htr2 transmembrane domain-like (From Topology)T: Htr2 transmembrane domain-likeF: EUF08777ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A1.20.1070.10 Mainly Alpha Up-down Bundle Rhopdopsin 7-helix transmembrane proteins Rhodopsin 7-helix transmembrane proteinsCATH (4.3.0)
B1.10.287.470 Mainly Alpha Orthogonal Bundle Helix Hairpins Helix hairpin binCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF01036Bacteriorhodopsin-like protein (Bac_rhodopsin)Bacteriorhodopsin-like proteinThe 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
PF17909Htr2 transmembrane domain (Htr2)Htr2 transmembrane domainArchaebacterial photoreceptors mediate phototaxis by regulating cell motility through two-component signaling cascades like those found in chemotaxis signaling chains of enteric bacteria. The photoreceptor sensory rhodopsin II from N. pharaonis (NpSR ...Archaebacterial photoreceptors mediate phototaxis by regulating cell motility through two-component signaling cascades like those found in chemotaxis signaling chains of enteric bacteria. The photoreceptor sensory rhodopsin II from N. pharaonis (NpSRII) in complex with its cognate transducer NpHtrII serves as a system for transmembrane signal transfer. This entry is for the transmembrane domain of the transducer HtrII. Studies suggest that conformation changes of the NpSRII/NpHtrII complex may be crucial for the mechanism of signal propagation spanning the membrane domain and feeding into the HAMP domain [1]. Furthermore, HtrII in H. salinarum not only transmits the signal from the photoreceptor SRII but also operates as a chemoreceptor [2].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
SENSORY RHODOPSIN II
SENSORY RHODOPSIN II TRANSDUCER