7S4G | pdb_00007s4g

Fab fragment bound to the Cter peptide of Ly6G6D

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
L	Skp1,Skp1_POZ	e7s4gL1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
F	Skp1,Skp1_POZ	e7s4gF1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
D	Skp1,Skp1_POZ	e7s4gD1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
B	Skp1,Skp1_POZ	e7s4gB1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
K [auth H]	Skp1,Skp1_POZ	e7s4gH1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
E	Skp1,Skp1_POZ	e7s4gE1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
C	Skp1,Skp1_POZ	e7s4gC1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)
A	Skp1,Skp1_POZ	e7s4gA1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Skp1,Skp1_POZ	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
L	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
K [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, D, F, L	Light Chain	IGKV4	Kappa	lymphocyte antigen 6 complex locus protein g6d	SAbDab (2026-04-10)
A, C, E, K [auth H]	Heavy Chain	IGHV1	-	lymphocyte antigen 6 complex locus protein g6d	SAbDab (2026-04-10)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
G, H [auth I], I [auth J], J [auth K]	Lymphocyte antigen 6 complex locus protein G6d	neurotransmitter receptor regulator activity acetylcholine receptor regulator activity molecular function inhibitor activity acetylcholine receptor inhibitor activity molecular function regulator activity signaling receptor inhibitor activity signaling receptor regulator activity identical protein binding protein binding binding	cellular response to nitrogen compound cellular response to stimulus cellular response to acetylcholine regulation of biological process regulation of cellular process response to stimulus signaling biological regulation response to oxygen-containing compound cell-cell signaling response to nitrogen compound acetylcholine receptor signaling pathway postsynaptic signal transduction cellular response to oxygen-containing compound cell communication cellular response to nitrogen compound cellular response to stimulus cellular response to acetylcholine regulation of biological process regulation of cellular process response to stimulus signaling biological regulation response to oxygen-containing compound cell-cell signaling response to nitrogen compound acetylcholine receptor signaling pathway postsynaptic signal transduction cellular response to oxygen-containing compound cell communication cellular response to chemical stimulus synaptic signaling response to chemical response to acetylcholine cellular process signal transduction	cell periphery cellular anatomical structure plasma membrane membrane cell surface external side of plasma membrane side of membrane extracellular region cell projection actin-based cell projection filopodium plasma membrane bounded cell projection protein-containing complex synapse cell periphery cellular anatomical structure plasma membrane membrane cell surface external side of plasma membrane side of membrane extracellular region cell projection actin-based cell projection filopodium plasma membrane bounded cell projection protein-containing complex synapse cell junction
B, D, F, L	light chain Fab 1G4	-	-	-
A, C, E, K [auth H]	heavy chain Fab 1G4	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
G, H [auth I], I [auth J], J [auth K]	IPR026524	Lymphocyte antigen 6 complex locus protein G6d/G6f	Family
G, H [auth I], I [auth J], J [auth K]	IPR016054	Ly-6 antigen/uPA receptor-like	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
G, H [auth I], I [auth J], J [auth K]	Pharos: O95868	autism spectrum disorder chronic obstructive pulmonary disease lung adenocarcinoma psoriasis squamous cell lung carcinoma cancer cutaneous lupus erythematosus lung carcinoma psoriatic arthritis systemic lupus erythematosus cervical cancer hypertensive disorder membranous glomerulonephritis rheumatoid arthritis

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.