4XPB | pdb_00004xpb

X-ray structure of Drosophila dopamine transporter with subsiteB mutations (D121G/S426M) bound to cocaine

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth H]	d4xpbh_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth L]	d4xpbl2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth L]	d4xpbl1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	e4xpbA1	A: beta-propeller-like	X: beta-propeller	H: PERK and Ire1 luminal domains	T:	F:	ECOD (20:10:01)
C [auth H]	e4xpbH1	A: beta-propeller-like	X: beta-propeller	H: PERK and Ire1 luminal domains	T:	F:	ECOD (20:10:01)
C [auth H]	e4xpbH2	A: Lipocalins/Streptavidin	X: SAM/DNA-glycosylase	H: SAM domain-like	T: EF-hand_1, EF-hand_6, EF-hand_7	F:	ECOD (20:10:01)
B [auth L]	e4xpbL1	A: beta-propeller-like	X: beta-propeller	H: PERK and Ire1 luminal domains	T:	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

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
C [auth H]	9D5 Fab	VH-CH1	Mus musculus (house mouse)	IGHV5-9-401, IGHJ201, IGHG2A01, IGHG2A02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2A_KAPPA	IMGT (202609-0)
B [auth L]	9D5 Fab	L-KAPPA	Mus musculus (house mouse)	IGKV4-57-101, IGKJ202, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2A_KAPPA	IMGT (202609-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV5	-	-	SAbDab (2026-03-13)
B [auth L]	Light Chain	IGKV4	Kappa	-	SAbDab (2026-03-13)

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	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 sodium:chloride symporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity 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 sodium:chloride symporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity symporter activity dopamine:sodium symporter activity cation binding cocaine binding binding ion binding heterocyclic compound binding small molecule binding metal ion binding	response to stimulus response to chemical response to odorant multicellular organismal process sleep adult locomotory behavior behavior adult behavior locomotory behavior amino acid transport localization transport establishment of localization inorganic ion homeostasis response to stimulus response to chemical response to odorant multicellular organismal process sleep adult locomotory behavior behavior adult behavior locomotory behavior amino acid transport localization transport establishment of localization inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis regulation of cytosolic calcium ion concentration regulation of presynaptic cytosolic calcium ion concentration cellular homeostasis neuron cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis monoamine transport norepinephrine transport nitrogen compound transport catecholamine transport organic hydroxy compound transport organic cation transport import into cell cellular localization signaling cell communication dopamine transport catecholamine uptake dopamine uptake involved in synaptic transmission synaptic signaling establishment of localization in cell neurotransmitter reuptake trans-synaptic signaling regulation of biological process biological regulation cell-cell signaling neurotransmitter transport chemical synaptic transmission anterograde trans-synaptic signaling cellular process neurotransmitter uptake synaptic transmission, dopaminergic dopamine uptake rhythmic process circadian sleep/wake cycle circadian behavior rhythmic behavior circadian rhythm monoatomic ion transmembrane transport sodium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport transmembrane transport monoatomic ion transport monoatomic cation transport sodium ion transport	cell periphery cellular anatomical structure plasma membrane membrane presynapse synapse cell junction presynaptic membrane plasma membrane region synaptic membrane somatodendritic compartment neuronal cell body membrane cell body cell body membrane cell periphery cellular anatomical structure plasma membrane membrane presynapse synapse cell junction presynaptic membrane plasma membrane region synaptic membrane somatodendritic compartment neuronal cell body membrane cell body cell body membrane neuronal cell body axon cell projection neuron projection plasma membrane bounded cell projection
C [auth H]	Antibody fragment light chain-protein, 9D5-light chain	-	-	-
B [auth L]	Antibody fragment heavy chain-protein, 9D5-heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	DAT Dopamine transporter in complex with dopamine

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.

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