Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A1B1C1D1E1F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration, microscopy

Macromolecule Content

• Total Structure Weight: 154.24 kDa 
• Atom Count: 8,489 
• Modelled Residue Count: 1,124 
• Deposited Residue Count: 1,389 
• Unique protein chains: 6

 6DDE

Mu Opioid Receptor-Gi Protein Complex

• PDB DOI:  https://doi.org/10.2210/pdb6DDE/pdb
• EM Map EMD-7868: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Trichoplusia ni, Spodoptera frugiperda
• Mutation(s): No 
• Membrane Protein: Yes  PDBTMMemProtMDmpstruc


• Deposited: 2018-05-10 Released: 2018-06-13 
• Deposition Author(s): Koehl, A., Hu, H., Maeda, S., Manglik, A., Zhang, Y., Kobilka, B.K., Skiniotis, G., Weis, W.I.
• Funding Organization(s): National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), Swiss National Science Foundation

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of the mu-opioid receptor-Giprotein complex.

Koehl, A., Hu, H., Maeda, S., Zhang, Y., Qu, Q., Paggi, J.M., Latorraca, N.R., Hilger, D., Dawson, R., Matile, H., Schertler, G.F.X., Granier, S., Weis, W.I., Dror, R.O., Manglik, A., Skiniotis, G., Kobilka, B.K.

(2018) Nature 558: 547-552

• PubMed: 29899455 
• DOI: https://doi.org/10.1038/s41586-018-0219-7
• Primary Citation of Related Structures:  
  6DDE, 6DDF


• PubMed Abstract: 
  

The μ-opioid receptor (μOR) is a G-protein-coupled receptor (GPCR) and the target of most clinically and recreationally used opioids. The induced positive effects of analgesia and euphoria are mediated by μOR signalling through the adenylyl cyclase-inhibiting heterotrimeric G protein G _i . Here we present the 3.5 Å resolution cryo-electron microscopy structure of the μOR bound to the agonist peptide DAMGO and nucleotide-free G _i . DAMGO occupies the morphinan ligand pocket, with its N terminus interacting with conserved receptor residues and its C terminus engaging regions important for opioid-ligand selectivity. Comparison of the μOR-G _i complex to previously determined structures of other GPCRs bound to the stimulatory G protein G _s reveals differences in the position of transmembrane receptor helix 6 and in the interactions between the G protein α-subunit and the receptor core. Together, these results shed light on the structural features that contribute to the G _i protein-coupling specificity of the µOR.

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Organizational Affiliation: 

Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA. [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(i) subunit alpha-1	A	354	Homo sapiens	Mutation(s): 0  Gene Names: GNAI1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P63096 (Homo sapiens) Explore P63096  Go to UniProtKB:  P63096
PHAROS:  P63096

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	B	344	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	C	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
scFv16	D [auth E]	259	Mus musculus	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Mu-type opioid receptor	E [auth R]	356	Mus musculus	Mutation(s): 0  Gene Names: Oprm1, Mor, Oprm Membrane Entity: Yes
UniProt
Find proteins for P42866 (Mus musculus) Explore P42866  Go to UniProtKB:  P42866

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
DAMGO	F [auth D]	5	Homo sapiens	Mutation(s): 0

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MEA	F [auth D]	L-PEPTIDE LINKING	C10 H13 N O2		PHE

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 6
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_002308	F [auth D]	DAMGO	Peptide-like / Synthetic opioid		Ligand Interaction

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.13

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-06-13 
Deposition Author(s): Koehl, A., Hu, H., Maeda, S., Manglik, A., Zhang, Y., Kobilka, B.K., Skiniotis, G., Weis, W.I.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)	United States	R37DA036246
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01GM083118
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	T32GM007276
Swiss National Science Foundation	Switzerland	310030_153145
Swiss National Science Foundation	Switzerland	310030B_17335

Revision History  

• Version 1.0: 2018-06-13
  Type: Initial release
  
• Version 1.1: 2018-06-27
  Changes: Data collection, Database references
• Version 1.2: 2018-07-04
  Changes: Data collection, Database references
• Version 1.3: 2019-12-11
  Changes: Author supporting evidence