Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyDPP6 N-terminal domain-like 8039749 3001705 SCOP2B (2022-06-29)
ASCOP2B Superfamilyalpha/beta-Hydrolases 8039750 3000102 SCOP2B (2022-06-29)
CSCOP2B Superfamilyalpha/beta-Hydrolases 8039750 3000102 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyDPP6 N-terminal domain-like 8039749 3001705 SCOP2B (2022-06-29)
BSCOP2 FamilySARS coronavirus receptor-binding domain-like 8092539 4003874 SCOP2 (2022-06-29)
BSCOP2 SuperfamilySARS coronavirus receptor-binding domain-like 8092540 3001706 SCOP2 (2022-06-29)
DSCOP2B SuperfamilySARS coronavirus receptor-binding domain-like 8092540 3001706 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ADPPIV_Ne4qzvA1 A: beta duplicates or obligate multimersX: beta-propeller-likeH: beta-propellerT: 8-bladedF: DPPIV_NECOD (1.6)
AHydrolase_4e4qzvA2 A: a/b three-layered sandwichesX: alpha/beta-Hydrolases (From Topology)H: alpha/beta-Hydrolases (From Topology)T: alpha/beta-HydrolasesF: Hydrolase_4ECOD (1.6)
CDPPIV_Ne4qzvC1 A: beta duplicates or obligate multimersX: beta-propeller-likeH: beta-propellerT: 8-bladedF: DPPIV_NECOD (1.6)
CHydrolase_4e4qzvC2 A: a/b three-layered sandwichesX: alpha/beta-Hydrolases (From Topology)H: alpha/beta-Hydrolases (From Topology)T: alpha/beta-HydrolasesF: Hydrolase_4ECOD (1.6)
BSpike_rec_binde4qzvB1 A: a+b three layersX: Coronavirus spike protein receptor-binding domain (From Homology)H: Coronavirus spike protein receptor-binding domainT: Beta-coronavirus spike protein receptor-binding domainF: Spike_rec_bindECOD (1.6)
DSpike_rec_binde4qzvD1 A: a+b three layersX: Coronavirus spike protein receptor-binding domain (From Homology)H: Coronavirus spike protein receptor-binding domainT: Beta-coronavirus spike protein receptor-binding domainF: Spike_rec_bindECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, C
PF00930Dipeptidyl peptidase IV (DPP IV) N-terminal region (DPPIV_N)Dipeptidyl peptidase IV (DPP IV) N-terminal region- Repeat
A, C
PF00326Prolyl oligopeptidase family (Peptidase_S9)Prolyl oligopeptidase family- Domain
B, D
PF09408Betacoronavirus spike glycoprotein S1, receptor binding (bCoV_S1_RBD)Betacoronavirus spike glycoprotein S1, receptor bindingThis entry represents the receptor binding domain (S1 RBD) of the betacoronavirus spike glycoprotein. The spike glycoprotein is arranged in trimers on the surface of the viral membrane and is essential for viral entry. The spike protein is transla ...This entry represents the receptor binding domain (S1 RBD) of the betacoronavirus spike glycoprotein. The spike glycoprotein is arranged in trimers on the surface of the viral membrane and is essential for viral entry. The spike protein is translated as a large polypeptide that is subsequently cleaved to the distal S1, responsible for receptor binding, and the membrane-anchored S2 responsible for membrane fusion [1]. The coronavirus (SARS-CoV) S1 subunit is composed of two distinct domains: an N-terminal domain (S1 NTD) and a receptor-binding domain (S1 RBD) also referred to as the S1 CTD or domain B. Each of these domains have been implicated in binding to host receptors. However, most coronaviruses are not known to utilise both the S1 NTD and S1 RBD for viral entry [2]. SARS-CoV makes use of its S1 RBD to bind to the human angiotensin-converting enzyme 2 (ACE2) as its host receptor [3,4].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, C
Dipeptidyl peptidase 4
B, D
Spike protein S1-