7PC0

GABA-A receptor bound by a-Cobratoxin

• PDB DOI: https://doi.org/10.2210/pdb7PC0/pdb
• EM Map EMD-13315: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Lama glama, Homo sapiens, Naja kaouthia
• Expression System: Escherichia coli, Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPMmpstruc


• Deposited: 2021-08-03 Released: 2022-02-09 
• Deposition Author(s): Kasaragod, V.B., Miller, P.S.
• Funding Organization(s): Wellcome Trust

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 8-mer - A3B2C2D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 8-mer - A5B2C1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - C2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - C2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 320.54 kDa 
• Atom Count: 15,748 
• Modelled Residue Count: 1,911 
• Deposited Residue Count: 2,796 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Megabody 25	A [auth F]	522	Lama glama	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Gamma-aminobutyric acid receptor subunit alpha-1	B [auth A]	368	Homo sapiens	Mutation(s): 0  Gene Names: GABRA1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P14867 (Homo sapiens) Explore P14867  Go to UniProtKB:  P14867
PHAROS:  P14867 GTEx:  ENSG00000022355

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Gamma-aminobutyric acid receptor subunit beta-3	C [auth B], D [auth C], E	451	Homo sapiens	Mutation(s): 0  Gene Names: GABRB3 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P28472 (Homo sapiens) Explore P28472  Go to UniProtKB:  P28472
PHAROS:  P28472 GTEx:  ENSG00000166206

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Gamma-aminobutyric acid receptor subunit alpha-1	F [auth D]	411	Homo sapiens	Mutation(s): 0  Gene Names: GABRA1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P14867 (Homo sapiens) Explore P14867  Go to UniProtKB:  P14867
PHAROS:  P14867 GTEx:  ENSG00000022355

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-cobratoxin	G [auth K], H [auth L]	71	Naja kaouthia	Mutation(s): 0
UniProt
Find proteins for P01391 (Naja kaouthia) Explore P01391  Go to UniProtKB:  P01391

Oligosaccharides

Help

Entity ID: 6
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	I [auth G]	7		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G55220VL GlyCosmos:  G55220VL GlyGen:  G55220VL

Entity ID: 7
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	J [auth H]	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Entity ID: 8
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	K [auth I]	6		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G09724ZC GlyCosmos:  G09724ZC GlyGen:  G09724ZC

Entity ID: 9
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	L [auth J]	4		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G22573RC GlyCosmos:  G22573RC GlyGen:  G22573RC

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	M [auth A], P [auth C], Q [auth E], R [auth D]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
HSM (Subject of Investigation/LOI)	N [auth B]	HISTAMINE C5 H9 N3 NTYJJOPFIAHURM-UHFFFAOYSA-N
HEX	S [auth D]	HEXANE C6 H14 VLKZOEOYAKHREP-UHFFFAOYSA-N
ZN (Subject of Investigation/LOI)	O [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-02-09 
Deposition Author(s): Kasaragod, V.B., Miller, P.S.

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Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	--

Revision History  

• Version 1.0: 2022-02-09
  Type: Initial release
  
• Version 2.0: 2022-02-16
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Polymer sequence, Source and taxonomy, Structure summary
• Version 2.1: 2022-02-23
  Changes: Database references
• Version 2.2: 2022-03-02
  Changes: Database references