Annotations: 6L8Q

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d6l8qa1	All beta proteins	8-bladed beta-propeller	DPP6 N-terminal domain-like	DPP6 N-terminal domain-like	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
A	d6l8qa2	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	automated matches	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
C	d6l8qc1	All beta proteins	8-bladed beta-propeller	DPP6 N-terminal domain-like	DPP6 N-terminal domain-like	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
C	d6l8qc2	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	automated matches	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
E	d6l8qe1	All beta proteins	8-bladed beta-propeller	DPP6 N-terminal domain-like	DPP6 N-terminal domain-like	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
E	d6l8qe2	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	automated matches	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
G	d6l8qg1	All beta proteins	8-bladed beta-propeller	DPP6 N-terminal domain-like	DPP6 N-terminal domain-like	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)
G	d6l8qg2	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	automated matches	automated matches	David's myotis (Myotis davidii ) [TaxId: 225400 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	SARS coronavirus receptor-binding domain-like	8082394	3001706	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	SARS coronavirus receptor-binding domain-like	8082394	3001706	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SARS coronavirus receptor-binding domain-like	8082394	3001706	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	SARS coronavirus receptor-binding domain-like	8082394	3001706	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	DPPIV_N_1	e6l8qA1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 8-bladed	F: DPPIV_N_1	ECOD (1.6)
A	Hydrolase_4	e6l8qA2	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Hydrolase_4	ECOD (1.6)
C	DPPIV_N_1	e6l8qC1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 8-bladed	F: DPPIV_N_1	ECOD (1.6)
C	Hydrolase_4	e6l8qC2	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Hydrolase_4	ECOD (1.6)
E	DPPIV_N_1	e6l8qE2	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 8-bladed	F: DPPIV_N_1	ECOD (1.6)
E	Hydrolase_4	e6l8qE1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Hydrolase_4	ECOD (1.6)
G	DPPIV_N_1	e6l8qG2	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 8-bladed	F: DPPIV_N_1	ECOD (1.6)
G	Hydrolase_4	e6l8qG1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Hydrolase_4	ECOD (1.6)
D	Spike_rec_bind	e6l8qD1	A: a+b three layers	X: Coronavirus spike protein receptor-binding domain (From Homology)	H: Coronavirus spike protein receptor-binding domain	T: Beta-coronavirus spike protein receptor-binding domain	F: Spike_rec_bind	ECOD (1.6)
F	Spike_rec_bind	e6l8qF1	A: a+b three layers	X: Coronavirus spike protein receptor-binding domain (From Homology)	H: Coronavirus spike protein receptor-binding domain	T: Beta-coronavirus spike protein receptor-binding domain	F: Spike_rec_bind	ECOD (1.6)
B	Spike_rec_bind	e6l8qB1	A: a+b three layers	X: Coronavirus spike protein receptor-binding domain (From Homology)	H: Coronavirus spike protein receptor-binding domain	T: Beta-coronavirus spike protein receptor-binding domain	F: Spike_rec_bind	ECOD (1.6)
H	Spike_rec_bind	e6l8qH1	A: a+b three layers	X: Coronavirus spike protein receptor-binding domain (From Homology)	H: Coronavirus spike protein receptor-binding domain	T: Beta-coronavirus spike protein receptor-binding domain	F: Spike_rec_bind	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.140.10.30	Mainly Beta	8 Propeller	Methanol Dehydrogenase	Chain A	CATH (utative)
A	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (utative)
C	2.140.10.30	Mainly Beta	8 Propeller	Methanol Dehydrogenase	Chain A	CATH (utative)
C	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (utative)
E	2.140.10.30	Mainly Beta	8 Propeller	Methanol Dehydrogenase	Chain A	CATH (utative)
E	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (utative)
G	2.140.10.30	Mainly Beta	8 Propeller	Methanol Dehydrogenase	Chain A	CATH (utative)
G	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (utative)
D	3.30.70.1840	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Spike protein, C-terminal core receptor binding subdomain	CATH (utative)
D	2.20.210.30	Mainly Beta	Single Sheet	ubp-family deubiquitinating enzyme fold		CATH (utative)
F	3.30.70.1840	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Spike protein, C-terminal core receptor binding subdomain	CATH (utative)
F	2.20.210.30	Mainly Beta	Single Sheet	ubp-family deubiquitinating enzyme fold		CATH (utative)
B	3.30.70.1840	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Spike protein, C-terminal core receptor binding subdomain	CATH (utative)
B	2.20.210.30	Mainly Beta	Single Sheet	ubp-family deubiquitinating enzyme fold		CATH (utative)
H	3.30.70.1840	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Spike protein, C-terminal core receptor binding subdomain	CATH (utative)
H	2.20.210.30	Mainly Beta	Single Sheet	ubp-family deubiquitinating enzyme fold		CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E, G	PF00930	Dipeptidyl peptidase IV (DPP IV) N-terminal region (DPPIV_N)	Dipeptidyl peptidase IV (DPP IV) N-terminal region	-	Repeat
A, C, E, G	PF00326	Prolyl oligopeptidase family (Peptidase_S9)	Prolyl oligopeptidase family	-	Domain
B, D, F, H	PF09408	Betacoronavirus spike glycoprotein S1, receptor binding (bCoV_S1_RBD)	Betacoronavirus spike glycoprotein S1, receptor binding	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 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

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G	Dipeptidyl peptidase 4	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure anchoring junction cell junction membrane microdomain membrane raft membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane cell leading edge leading edge membrane plasma membrane bounded cell projection cellular anatomical structure anchoring junction cell junction membrane microdomain membrane raft membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane cell leading edge leading edge membrane plasma membrane bounded cell projection cell projection lamellipodium membrane cell projection membrane lamellipodium
B, D, F, H	Spike glycoprotein	-	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell virion attachment to host cell biological process involved in interspecies interaction between organisms receptor-mediated virion attachment to host cell adhesion of symbiont to host cell viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction membrane organization cellular component organization membrane fusion viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell virion attachment to host cell biological process involved in interspecies interaction between organisms receptor-mediated virion attachment to host cell adhesion of symbiont to host cell viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction membrane organization cellular component organization membrane fusion cellular process cellular component organization or biogenesis fusion of virus membrane with host plasma membrane import into cell transport establishment of localization vesicle-mediated transport localization symbiont entry into host cell symbiont entry into host endocytosis involved in viral entry into host cell endocytosis transport of virus regulation of biological process positive regulation of viral life cycle positive regulation of viral process biological regulation positive regulation of biological process modulation by symbiont of entry into host regulation of viral entry into host cell regulation of viral life cycle regulation of viral process positive regulation of viral entry into host cell positive regulation by symbiont of entry into host regulation of biological process involved in symbiotic interaction	cellular anatomical structure membrane virion component virion membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane host cell cytoplasm part host intracellular organelle host cell endoplasmic reticulum-Golgi intermediate compartment membrane host cell endoplasmic reticulum-Golgi intermediate compartment host cell cytoplasm host cell part cellular anatomical structure membrane virion component virion membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane host cell cytoplasm part host intracellular organelle host cell endoplasmic reticulum-Golgi intermediate compartment membrane host cell endoplasmic reticulum-Golgi intermediate compartment host cell cytoplasm host cell part host intracellular region viral membrane viral envelope host cell plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G	IPR001375	Peptidase S9, prolyl oligopeptidase, catalytic domain	Domain
A, C, E, G	IPR002471	Peptidase S9, serine active site	Active Site
A, C, E, G	IPR002469	Dipeptidylpeptidase IV, N-terminal domain	Domain
A, C, E, G	IPR050278	Serine protease S9B/DPPIV	Family
A, C, E, G	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
B, D, F, H	IPR018548	Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus	Domain
B, D, F, H	IPR032500	Spike glycoprotein S1, N-terminal domain, betacoronavirus-like	Domain
B, D, F, H	IPR044376	Spike (S) protein S1 subunit, receptor-binding domain, MERS-CoV	Domain
B, D, F, H	IPR042578	Spike glycoprotein, betacoronavirus	Family
B, D, F, H	IPR036326	Spike S1 subunit, receptor binding domain superfamily, betacoronavirus	Homologous Superfamily
B, D, F, H	IPR043002	Spike glycoprotein, N-terminal domain superfamily	Homologous Superfamily
B, D, F, H	IPR044874	Spike glycoprotein S2, coronavirus, heptad repeat 2	Domain
B, D, F, H	IPR044337	Spike (S) protein S1 subunit, N-terminal domain, MERS-CoV-like	Domain
B, D, F, H	IPR043614	Spike glycoprotein S2, coronavirus, C-terminal	Domain
B, D, F, H	IPR044873	Spike glycoprotein S2, coronavirus, heptad repeat 1	Domain
B, D, F, H	IPR043473	Spike glycoprotein S2 superfamily, coronavirus	Homologous Superfamily
B, D, F, H	IPR043607	Coronavirus spike glycoprotein S1, C-terminal	Domain
B, D, F, H	IPR002552	Spike glycoprotein S2, coronavirus	Domain

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.