6XCN

Structure of the SARS-CoV-2 spike glycoprotein in complex with the C105 neutralizing antibody Fab fragment (state 2)

External Resource: Annotation

Domain Annotation: ECOD Classification
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Spike_NTD	e6xcnA3	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Concanavalin A-like lectins/glucanases	F: Spike_NTD	ECOD (1.6)
A	Spike_rec_bind_1	e6xcnA1	A: beta complex topology	X: Beta domain of coronavirus spike glycoprotein (From Topology)	H: Beta domain of coronavirus spike glycoprotein (From Topology)	T: Beta domain of coronavirus spike glycoprotein	F: Spike_rec_bind_1	ECOD (1.6)
A	Spike_rec_bind	e6xcnA2	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)
A	Corona_S2	e6xcnA4	A: a+b complex topology	X: S2 subunit of coronavirus spike glycoprotein (From Topology)	H: S2 subunit of coronavirus spike glycoprotein (From Topology)	T: S2 subunit of coronavirus spike glycoprotein	F: Corona_S2	ECOD (1.6)
B [auth C]	Spike_NTD	e6xcnC2	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Concanavalin A-like lectins/glucanases	F: Spike_NTD	ECOD (1.6)
B [auth C]	Spike_rec_bind_1	e6xcnC3	A: beta complex topology	X: Beta domain of coronavirus spike glycoprotein (From Topology)	H: Beta domain of coronavirus spike glycoprotein (From Topology)	T: Beta domain of coronavirus spike glycoprotein	F: Spike_rec_bind_1	ECOD (1.6)
B [auth C]	Spike_rec_bind	e6xcnC4	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 [auth C]	Corona_S2	e6xcnC1	A: a+b complex topology	X: S2 subunit of coronavirus spike glycoprotein (From Topology)	H: S2 subunit of coronavirus spike glycoprotein (From Topology)	T: S2 subunit of coronavirus spike glycoprotein	F: Corona_S2	ECOD (1.6)
C [auth E]	Spike_NTD	e6xcnE1	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Concanavalin A-like lectins/glucanases	F: Spike_NTD	ECOD (1.6)
C [auth E]	Spike_rec_bind_1	e6xcnE2	A: beta complex topology	X: Beta domain of coronavirus spike glycoprotein (From Topology)	H: Beta domain of coronavirus spike glycoprotein (From Topology)	T: Beta domain of coronavirus spike glycoprotein	F: Spike_rec_bind_1	ECOD (1.6)
C [auth E]	Spike_rec_bind	e6xcnE3	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)
C [auth E]	Corona_S2	e6xcnE4	A: a+b complex topology	X: S2 subunit of coronavirus spike glycoprotein (From Topology)	H: S2 subunit of coronavirus spike glycoprotein (From Topology)	T: S2 subunit of coronavirus spike glycoprotein	F: Corona_S2	ECOD (1.6)
D [auth B]	V-set_8	e6xcnB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
E [auth F]	V-set_8	e6xcnF1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
F [auth H]	V-set_8	e6xcnH1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
G [auth D]	V-set_3	e6xcnD1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
H [auth G]	V-set_3	e6xcnG1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
I [auth L]	V-set_3	e6xcnL1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
D [auth B], E [auth F], F [auth H]	Fab C105, anti-SARS-CoV-2, neutralizing	VH-CH1	Homo sapiens (human)	IGHV3-5301, IGHJ401, IGHJ402, IGHJ403, IGHJ501, IGHJ6-301, IGHG103, IGHG108, IGHG1*06	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202449-0)
G [auth D], H [auth G], I [auth L]	Fab C105, anti-SARS-CoV-2, neutralizing	L-LAMBDA	Homo sapiens (human)	IGLV2-801, IGLJ201, IGLJ301, IGLC201, IGLC202, IGLC304	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202449-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D [auth B], E [auth F], F [auth H]	Heavy Chain	IGHV3	-	spike glycoprotein	SAbDab (2024-12-13)
G [auth D], H [auth G], I [auth L]	Light Chain	IGLV2	Lambda	spike glycoprotein	SAbDab (2024-12-13)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth C], C [auth E]	Spike glycoprotein	protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity host cell surface binding host cell surface receptor binding structural constituent of virion structural molecule activity identical 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 symbiont-mediated perturbation of host defense response suppression by virus of host tetherin activity biological process involved in interspecies interaction between organisms modulation by virus of host process virus-mediated perturbation of host defense response biological process involved in interaction with 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 symbiont-mediated perturbation of host defense response suppression by virus of host tetherin activity biological process involved in interspecies interaction between organisms modulation by virus of host process virus-mediated perturbation of host defense response biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated perturbation of host process modulation of process of another organism modulation by virus of host cellular process virion attachment to host cell receptor-mediated virion attachment to host cell adhesion of symbiont to host cell viral life cycle adhesion of symbiont to host viral gene expression viral translation 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 response to host defenses response to stimulus response to other organism symbiont-mediated perturbation of host immune response symbiont-mediated perturbation of host defenses response to defenses of other organism response to external stimulus response to biotic stimulus symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response symbiont-mediated suppression of host defenses symbiont-mediated perturbation of host innate immune response response to host response to external biotic stimulus entry receptor-mediated virion attachment to host cell	cellular anatomical structure membrane host extracellular space host cellular component cell periphery plasma membrane host intracellular membrane-bounded organelle 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 cellular anatomical structure membrane host extracellular space host cellular component cell periphery plasma membrane host intracellular membrane-bounded organelle 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 host cell plasma membrane virion component virion membrane viral membrane viral envelope host cell surface
D [auth B], E [auth F], F [auth H]	C105 Fab Heavy Chain	-	-	-
G [auth D], H [auth G], I [auth L]	C105 Fab Light Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth C], C [auth E]	IPR044873	Spike glycoprotein S2, coronavirus, heptad repeat 1	Domain
A, B [auth C], C [auth E]	IPR044366	Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2	Domain
A, B [auth C], C [auth E]	IPR018548	Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus	Domain
A, B [auth C], C [auth E]	IPR044341	Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like	Domain
A, B [auth C], C [auth E]	IPR032500	Spike glycoprotein S1, N-terminal domain, betacoronavirus-like	Domain
A, B [auth C], C [auth E]	IPR042578	Spike glycoprotein, betacoronavirus	Family
A, B [auth C], C [auth E]	IPR036326	Spike S1 subunit, receptor binding domain superfamily, betacoronavirus	Homologous Superfamily
A, B [auth C], C [auth E]	IPR043002	Spike glycoprotein, N-terminal domain superfamily	Homologous Superfamily
A, B [auth C], C [auth E]	IPR044874	Spike glycoprotein S2, coronavirus, heptad repeat 2	Domain
A, B [auth C], C [auth E]	IPR043473	Spike glycoprotein S2 superfamily, coronavirus	Homologous Superfamily
A, B [auth C], C [auth E]	IPR043607	Coronavirus spike glycoprotein S1, C-terminal	Domain
A, B [auth C], C [auth E]	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.