Annotations: 2FXP

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d2fxpc2	Coiled coil proteins	Stalk segment of viral fusion proteins	Coronavirus S2 glycoprotein	Coronavirus spike glycoprotein S2 fragments	E2 spike glycoprotein	(Severe acute respiratory syndrome-related coronavirus ) [TaxId: 694009 ],	SCOPe (2.08)
C	d2fxpc3	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Severe acute respiratory syndrome-related coronavirus ) [TaxId: 694009 ],	SCOPe (2.08)
B	d2fxpb2	Coiled coil proteins	Stalk segment of viral fusion proteins	Coronavirus S2 glycoprotein	Coronavirus spike glycoprotein S2 fragments	E2 spike glycoprotein	(Severe acute respiratory syndrome-related coronavirus ) [TaxId: 694009 ],	SCOPe (2.08)
B	d2fxpb3	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Severe acute respiratory syndrome-related coronavirus ) [TaxId: 694009 ],	SCOPe (2.08)
A	d2fxpa1	Coiled coil proteins	Stalk segment of viral fusion proteins	Coronavirus S2 glycoprotein	Coronavirus spike glycoprotein S2 fragments	E2 spike glycoprotein	(Severe acute respiratory syndrome-related coronavirus ) [TaxId: 694009 ],	SCOPe (2.08)
A	d2fxpa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Severe acute respiratory syndrome-related coronavirus ) [TaxId: 694009 ],	SCOPe (2.08)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	1.20.5.790	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	CATH (4.3.0)
B	1.20.5.790	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	CATH (4.3.0)
A	1.20.5.790	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Spike glycoprotein	host cell surface binding binding host cell surface receptor binding identical protein binding protein binding	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion cellular process cellular component organization or biogenesis 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 viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion cellular process cellular component organization or biogenesis 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 fusion of virus membrane with host plasma membrane symbiont entry into host cell symbiont entry into host endocytosis involved in viral entry into host cell symbiont-mediated perturbation of host defense response symbiont-mediated perturbation of host process symbiont-mediated-mediated suppression of host tetherin activity modulation of process of another organism 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 symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response symbiont-mediated perturbation of host immune response symbiont-mediated perturbation of host innate immune response	cellular anatomical structure membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane other organism part 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 cellular anatomical structure membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane other organism part 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 host cell plasma membrane virion component virion membrane viral membrane viral envelope

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR044873	Spike glycoprotein S2, coronavirus, heptad repeat 1	Domain
A, B, C	IPR018548	Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus	Domain
A, B, C	IPR044341	Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like	Domain
A, B, C	IPR032500	Spike glycoprotein S1, N-terminal domain, betacoronavirus-like	Domain
A, B, C	IPR042578	Spike glycoprotein, betacoronavirus	Family
A, B, C	IPR036326	Spike S1 subunit, receptor binding domain superfamily, betacoronavirus	Homologous Superfamily
A, B, C	IPR043002	Spike glycoprotein, N-terminal domain superfamily	Homologous Superfamily
A, B, C	IPR044874	Spike glycoprotein S2, coronavirus, heptad repeat 2	Domain
A, B, C	IPR043473	Spike glycoprotein S2 superfamily, coronavirus	Homologous Superfamily
A, B, C	IPR002552	Spike glycoprotein S2, coronavirus	Domain
A, B, C	IPR044370	Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV	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.