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- PDB-1gfi: STRUCTURES OF ACTIVE CONFORMATIONS OF GI ALPHA 1 AND THE MECHANIS... -

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Basic information

Entry
Database: PDB / ID: 1gfi
TitleSTRUCTURES OF ACTIVE CONFORMATIONS OF GI ALPHA 1 AND THE MECHANISM OF GTP HYDROLYSIS
ComponentsGUANINE NUCLEOTIDE-BINDING PROTEIN G
KeywordsSIGNAL TRANSDUCTION PROTEIN
Function / homology
Function and homology information


Extra-nuclear estrogen signaling / Adenylate cyclase inhibitory pathway / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (i) signalling events / negative regulation of synaptic transmission / GTPase activating protein binding / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding ...Extra-nuclear estrogen signaling / Adenylate cyclase inhibitory pathway / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (i) signalling events / negative regulation of synaptic transmission / GTPase activating protein binding / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / D2 dopamine receptor binding / G protein-coupled serotonin receptor binding / regulation of mitotic spindle organization / cellular response to forskolin / G protein-coupled receptor binding / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / GDP binding / heterotrimeric G-protein complex / cell cortex / midbody / cell cycle / G protein-coupled receptor signaling pathway / cell division / GTPase activity / centrosome / GTP binding / magnesium ion binding / protein-containing complex / nucleus / plasma membrane / cytoplasm
Similarity search - Function
GI Alpha 1, domain 2-like / GI Alpha 1, domain 2-like / G-protein alpha subunit, group I / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / P-loop containing nucleotide triphosphate hydrolases / P-loop containing nucleoside triphosphate hydrolase ...GI Alpha 1, domain 2-like / GI Alpha 1, domain 2-like / G-protein alpha subunit, group I / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / P-loop containing nucleotide triphosphate hydrolases / P-loop containing nucleoside triphosphate hydrolase / Rossmann fold / Orthogonal Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
TETRAFLUOROALUMINATE ION / GUANOSINE-5'-DIPHOSPHATE / Guanine nucleotide-binding protein G(i) subunit alpha-1
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / Resolution: 2.2 Å
AuthorsColeman, D.E. / Berghuis, A.M. / Sprang, S.R.
Citation
Journal: Science / Year: 1994
Title: Structures of active conformations of Gi alpha 1 and the mechanism of GTP hydrolysis.
Authors: Coleman, D.E. / Berghuis, A.M. / Lee, E. / Linder, M.E. / Gilman, A.G. / Sprang, S.R.
#1: Journal: J.Mol.Biol. / Year: 1994
Title: Crystallization and Preliminary Crystallographic Studies of GI Alpha 1 and Mutants of GI Alpha 1 in the GTP and Gdp-Bound States
Authors: Coleman, D.E. / Lee, E. / Mixon, M.B. / Linder, M.E. / Berghuis, A.M. / Gilman, A.G. / Sprang, S.R.
History
DepositionNov 11, 1994Processing site: BNL
Revision 1.0Mar 31, 1995Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 7, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.process_site / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: GUANINE NUCLEOTIDE-BINDING PROTEIN G
hetero molecules


Theoretical massNumber of molelcules
Total (without water)40,8384
Polymers40,2681
Non-polymers5703
Water1,63991
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)80.500, 80.500, 106.550
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number154
Space group name H-MP3221

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Components

#1: Protein GUANINE NUCLEOTIDE-BINDING PROTEIN G


Mass: 40267.836 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Plasmid: PQE6 VECTOR / References: UniProt: P10824
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#3: Chemical ChemComp-ALF / TETRAFLUOROALUMINATE ION


Mass: 102.975 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: AlF4
#4: Chemical ChemComp-GDP / GUANOSINE-5'-DIPHOSPHATE / Guanosine diphosphate


Type: RNA linking / Mass: 443.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O11P2 / Comment: GDP, energy-carrying molecule*YM
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 91 / Source method: isolated from a natural source / Formula: H2O
Nonpolymer detailsCOMPND GDP-ALF4 IS A TRANSITION STATE ANALOG.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.47 Å3/Da / Density % sol: 50.3 %
Crystal grow
*PLUS
Temperature: 21 ℃ / pH: 6 / Method: vapor diffusion, sitting drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
125-30 mg/mlprotein1drop
20.03 M1dropAlCl3
35 mM1dropNaF
45 mM1dropMgCl2
510 mMdithiothreitol1drop
6200 mMsodium acetate1drop
71.8-1.9 Mammonium sulfate1reservoir

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Data collection

DiffractionMean temperature: 100 K
RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1
ReflectionNum. obs: 19715 / % possible obs: 97.8 %
Reflection
*PLUS
Highest resolution: 2.2 Å / Lowest resolution: 15 Å / Num. measured all: 96580 / Rmerge(I) obs: 0.053

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementResolution: 2.2→8 Å / σ(F): 1
RfactorNum. reflection
Rfree0.284 -
Rwork0.214 -
obs0.214 217407
Displacement parametersBiso mean: 20.2 Å2
Refinement stepCycle: LAST / Resolution: 2.2→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2517 0 34 91 2642
Refinement
*PLUS
Num. reflection obs: 17407
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.012
X-RAY DIFFRACTIONx_angle_deg1.5

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