Annotations: 8DE3

Native serotonin transporter in complex with 15B8 Fab antibody in the presence of cocaine

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	NAD_binding_1	e8de3A1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: NAD_binding_1	ECOD (v295)
C	NAD_binding_1	e8de3C1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: NAD_binding_1	ECOD (v295)
B	NAD_binding_1	e8de3B1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: NAD_binding_1	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	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)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C	Light Chain	IGKV3	Kappa	transporter	SAbDab (2026-06-26)
B	Heavy Chain	IGHV1	-	transporter	SAbDab (2026-06-26)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00209	Sodium:neurotransmitter symporter family (SNF)	Sodium:neurotransmitter symporter family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Transporter	cation binding binding ion binding serotonin binding amine binding heterocyclic compound binding small molecule binding neurotransmitter transmembrane transporter activity transporter activity transmembrane transporter activity antiporter activity active transmembrane transporter activity secondary active transmembrane transporter activity cell adhesion molecule binding cation binding binding ion binding serotonin binding amine binding heterocyclic compound binding small molecule binding neurotransmitter transmembrane transporter activity transporter activity transmembrane transporter activity antiporter activity active transmembrane transporter activity secondary active transmembrane transporter activity cell adhesion molecule binding protein-containing complex binding protein binding integrin binding signaling receptor binding alkali metal ion binding sodium ion binding metal ion binding monoatomic cation transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity monoatomic anion:sodium symporter activity monoamine transmembrane transporter activity sodium ion transmembrane transporter activity serotonin:sodium:chloride symporter activity sodium:chloride symporter activity monoatomic anion:monoatomic cation symporter activity chloride:monoatomic cation symporter activity monoatomic ion transmembrane transporter activity metal ion transmembrane transporter activity symporter activity nitric-oxide synthase binding enzyme binding	regulation of biological process regulation of cellular process biological regulation positive regulation of biological process cellular process cell cycle regulation of cell cycle positive regulation of cell cycle positive regulation of cellular process regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process cellular process cell cycle regulation of cell cycle positive regulation of cell cycle positive regulation of cellular process regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process developmental process multicellular organismal process head development brain morphogenesis animal organ development brain development nervous system development multicellular organism development anatomical structure morphogenesis central nervous system development anatomical structure development animal organ morphogenesis system development regulation of growth regulation of developmental growth regulation of developmental process developmental growth negative regulation of developmental process growth negative regulation of biological process organ growth negative regulation of organ growth negative regulation of developmental growth negative regulation of growth regulation of organ growth regulation of multicellular organismal process negative regulation of multicellular organismal process regulation of body fluid levels wound healing response to stimulus homotypic cell-cell adhesion cell activation hemostasis platelet aggregation blood coagulation cell adhesion cell-cell adhesion response to stress coagulation regulation of biological quality response to wounding platelet activation response to chemical response to toxic substance regulation of thalamus size regulation of anatomical structure size enteric nervous system development autonomic nervous system development	cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction cell periphery plasma membrane membrane membrane microdomain membrane raft presynapse synapse cell projection neuron projection cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction cell periphery plasma membrane membrane membrane microdomain membrane raft presynapse synapse cell projection neuron projection plasma membrane bounded cell projection membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm intracellular membrane-bounded organelle endomembrane system endosome membrane endosome intracellular vesicle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle vesicle organelle membrane
C	15B8 Fab light chain variable domain	-	-	-
B	15B8 Fab heavy chain variable domain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR013086	Sodium:neurotransmitter symporter, serotonin, N-terminal	Domain
A	IPR000175	Sodium:neurotransmitter symporter	Family
A	IPR037272	Sodium:neurotransmitter symporter superfamily	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

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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.