6M3Z

X-ray structure of a Drosophila dopamine transporter with NET-like mutations (D121G/S426M/F471L) in milnacipran bound form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.11 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structural basis of norepinephrine recognition and transport inhibition in neurotransmitter transporters.

Pidathala, S.Mallela, A.K.Joseph, D.Penmatsa, A.

(2021) Nat Commun 12: 2199-2199

  • DOI: https://doi.org/10.1038/s41467-021-22385-9
  • Primary Citation of Related Structures:  
    6M0F, 6M0Z, 6M2R, 6M38, 6M3Z, 6M47

  • PubMed Abstract: 

    Norepinephrine is a biogenic amine neurotransmitter that has widespread effects on alertness, arousal and pain sensation. Consequently, blockers of norepinephrine uptake have served as vital tools to treat depression and chronic pain. Here, we employ the Drosophila melanogaster dopamine transporter as a surrogate for the norepinephrine transporter and determine X-ray structures of the transporter in its substrate-free and norepinephrine-bound forms. We also report structures of the transporter in complex with inhibitors of chronic pain including duloxetine, milnacipran and a synthetic opioid, tramadol. When compared to dopamine, we observe that norepinephrine binds in a different pose, in the vicinity of subsite C within the primary binding site. Our experiments reveal that this region is the binding site for chronic pain inhibitors and a determinant for norepinephrine-specific reuptake inhibition, thereby providing a paradigm for the design of specific inhibitors for catecholamine neurotransmitter transporters.


  • Organizational Affiliation

    Molecular Biophysics Unit, Indian Institute of Science, Bangalore, India.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sodium-dependent dopamine transporter536Drosophila melanogasterMutation(s): 5 
Gene Names: DATfmnCG8380
Membrane Entity: Yes 
UniProt
Find proteins for Q7K4Y6 (Drosophila melanogaster)
Explore Q7K4Y6 
Go to UniProtKB:  Q7K4Y6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7K4Y6
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Antibody fragment 9D5 Light chainB [auth L]214Mus musculusMutation(s): 0 
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Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Antibody fragment 9D5 heavy chainC [auth H]219Mus musculusMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

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Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranoseD [auth B],
E [auth C]
2N/A
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Small Molecules
Ligands 7 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Y01
Query on Y01

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L [auth A]CHOLESTEROL HEMISUCCINATE
C31 H50 O4
WLNARFZDISHUGS-MIXBDBMTSA-N
CLR
Query on CLR

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M [auth A]CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
F0F (Subject of Investigation/LOI)
Query on F0F

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F [auth A](1R,2S)-2-(aminomethyl)-N,N-diethyl-1-phenyl-cyclopropane-1-carboxamide
C15 H22 N2 O
GJJFMKBJSRMPLA-HIFRSBDPSA-N
D10
Query on D10

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H [auth A]DECANE
C10 H22
DIOQZVSQGTUSAI-UHFFFAOYSA-N
GOL
Query on GOL

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G [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL
Query on CL

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I [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA
Query on NA

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J [auth A],
K [auth A]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.11 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.997α = 90
b = 141.599β = 90
c = 168.249γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Department of Biotechnology (DBT, India)IndiaIA/1/15/2/502063
Department of Biotechnology (DBT, India)IndiaBT/09/IYBA/2015/13

Revision History  (Full details and data files)

  • Version 1.0: 2021-02-17
    Type: Initial release
  • Version 1.1: 2021-04-28
    Changes: Database references
  • Version 1.2: 2023-11-29
    Changes: Data collection, Database references, Refinement description
  • Version 1.3: 2024-10-09
    Changes: Structure summary