1AZS

COMPLEX OF GS-ALPHA WITH THE CATALYTIC DOMAINS OF MAMMALIAN ADENYLYL CYCLASE

• PDB DOI: https://doi.org/10.2210/pdb1AZS/pdb

• Classification: COMPLEX (LYASE/HYDROLASE)
• Organism(s): Canis lupus familiaris, Rattus norvegicus, Bos taurus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 1997-11-20 Released: 1998-02-25 
• Deposition Author(s): Tesmer, J.J.G., Sprang, S.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.282 
• R-Value Work: 0.219 
• R-Value Observed: 0.219 

Literature

Crystal structure of the catalytic domains of adenylyl cyclase in a complex with Gsalpha.GTPgammaS.

Tesmer, J.J., Sunahara, R.K., Gilman, A.G., Sprang, S.R.

(1997) Science 278: 1907-1916

• PubMed: 9417641 
• DOI: https://doi.org/10.1126/science.278.5345.1907
• Primary Citation of Related Structures:  
  1AZS


• PubMed Abstract: 
  

  The crystal structure of a soluble, catalytically active form of adenylyl cyclase in a complex with its stimulatory heterotrimeric G protein alpha subunit (Gsalpha) and forskolin was determined to a resolution of 2.3 angstroms. When P-site inhibitors were soaked into native crystals of the complex, the active site of adenylyl cyclase was located and structural elements important for substrate recognition and catalysis were identified. On the basis of these and other structures, a molecular mechanism is proposed for the activation of adenylyl cyclase by Gsalpha.

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Organizational Affiliation: 

Howard Hughes Medical Institute and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75235-9050, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 6-mer - A2B2C2 Pseudo Symmetry: Cyclic - C2  (Explore in 3D)
Pseudo Stoichiometry: Hetero 6-mer - A4B2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 96.55 kDa 
• Atom Count: 5,881 
• Modelled Residue Count: 718 
• Deposited Residue Count: 834 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
VC1	A	220	Canis lupus familiaris	Mutation(s): 1  Gene Names: ADENYLYL CYCLASE TYPE V EC: 4.6.1.1
UniProt
Find proteins for P30803 (Canis lupus familiaris) Explore P30803  Go to UniProtKB:  P30803

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
IIC2	B	212	Rattus norvegicus	Mutation(s): 0  Gene Names: ADENYLYL CYCLASE TYPE II EC: 4.6.1.1
UniProt
Find proteins for P26769 (Rattus norvegicus) Explore P26769  Go to UniProtKB:  P26769

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
GS-ALPHA	C	402	Bos taurus	Mutation(s): 0  Gene Names: GNAS
UniProt
Find proteins for P04896 (Bos taurus) Explore P04896  Go to UniProtKB:  P04896

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FKP	D [auth A]	METHYLPIPERAZINOFORSKOLIN C30 H50 N2 O7 UNNWBVSRDSMIDQ-QAMJDCALSA-N
GSP	F [auth C]	5'-GUANOSINE-DIPHOSPHATE-MONOTHIOPHOSPHATE C10 H16 N5 O13 P3 S XOFLBQFBSOEHOG-UUOKFMHZSA-N
MG	E [auth C]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.282 
• R-Value Work: 0.219 
• R-Value Observed: 0.219 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 119	α = 90
b = 134.05	β = 90
c = 70.65	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-02-25 
Deposition Author(s): Tesmer, J.J.G., Sprang, S.R.

Revision History  

• Version 1.0: 1998-02-25
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations, Other
• Version 1.4: 2023-08-02
  Changes: Refinement description