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- PDB-1bof: GI-ALPHA-1 BOUND TO GDP AND MAGNESIUM -

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Basic information

Entry
Database: PDB / ID: 1bof
TitleGI-ALPHA-1 BOUND TO GDP AND MAGNESIUM
ComponentsGI ALPHA 1
KeywordsSIGNAL TRANSDUCTION PROTEIN / GTP-ASE / G PROTEIN
Function / homology
Function and homology information


Extra-nuclear estrogen signaling / Adenylate cyclase inhibitory pathway / negative regulation of synaptic transmission / GTPase activating protein binding / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (i) signalling events / neurotransmitter receptor localization to postsynaptic specialization membrane / positive regulation of protein localization to cell cortex / T cell migration ...Extra-nuclear estrogen signaling / Adenylate cyclase inhibitory pathway / negative regulation of synaptic transmission / GTPase activating protein binding / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (i) signalling events / neurotransmitter receptor localization to postsynaptic specialization membrane / positive regulation of protein localization to cell cortex / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cellular response to forskolin / regulation of mitotic spindle organization / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / GDP binding / heterotrimeric G-protein complex / G protein activity / midbody / cell cortex / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / postsynapse / G protein-coupled receptor signaling pathway / cell division / GTPase activity / centrosome / GTP binding / glutamatergic synapse / magnesium ion binding / protein-containing complex / nucleus / plasma membrane / cytoplasm / cytosol
Similarity search - Function
GI Alpha 1, domain 2-like / GI Alpha 1, domain 2-like / G-protein alpha subunit, group I / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold ...GI Alpha 1, domain 2-like / GI Alpha 1, domain 2-like / G-protein alpha subunit, group I / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold / P-loop containing nucleoside triphosphate hydrolase / Orthogonal Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
GUANOSINE-5'-DIPHOSPHATE / Guanine nucleotide-binding protein G(i) subunit alpha-1
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsColeman, D.E. / Sprang, S.R.
Citation
Journal: Biochemistry / Year: 1998
Title: Crystal structures of the G protein Gi alpha 1 complexed with GDP and Mg2+: a crystallographic titration experiment.
Authors: Coleman, D.E. / Sprang, S.R.
#1: Journal: Science / Year: 1995
Title: Tertiary and Quaternary Structural Changes in Gi Alpha 1 Induced by GTP Hydrolysis
Authors: Mixon, M.B. / Lee, E. / Coleman, D.E. / Berghuis, A.M. / Gilman, A.G. / Sprang, S.R.
#2: 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.
#3: 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.
History
DepositionAug 4, 1998Processing site: BNL
Revision 1.0Jan 6, 1999Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 9, 2023Group: Database references / Derived calculations ...Database references / Derived calculations / Other / Refinement description
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / pdbx_initial_refinement_model / 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 / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _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
Revision 1.4May 22, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: GI ALPHA 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)40,9275
Polymers40,2681
Non-polymers6604
Water88349
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)121.747, 121.747, 68.929
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number79
Space group name H-MI4

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Components

#1: Protein GI ALPHA 1 / GIA1 / GUANINE NUCLEOTIDE-BINDING PROTEIN G(I) / ALPHA-1 SUBUNIT


Mass: 40267.836 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: INACTIVE FORM / Source: (gene. exp.) Rattus norvegicus (Norway rat) / Plasmid: PQE6 / Production host: Escherichia coli (E. coli) / References: UniProt: P10824
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-GDP / GUANOSINE-5'-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


Mass: 18.015 Da / Num. of mol.: 49 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.17 Å3/Da / Density % sol: 61.21 % / Description: CRYSTALS ARE ISOMORPHOUS TO 1GDD CRYSTALS.
Crystal growpH: 7 / Details: pH 7.0
Crystal grow
*PLUS
Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
18 mg/mlprotein1drop
21.4 Mpotassium phosphate1drop
325 mMEPPS1drop
45 mM1dropor 10mMMgSO4
50.5 mMGTPgammaS1drop
62.5 mMdithiothreitol1drop
710 mMEDTA1drop
8100 mM1reservoirNaCl
91.45-1.65 Mpotassium phosphate1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: CHESS / Beamline: A1 / Wavelength: 0.91
DetectorType: ADSC QUANTUM 1 / Detector: CCD / Date: Jun 1, 1997 / Details: MIRRORS
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.91 Å / Relative weight: 1
ReflectionResolution: 2.2→15 Å / Num. obs: 25367 / % possible obs: 97.3 % / Observed criterion σ(I): -3 / Redundancy: 3.6 % / Biso Wilson estimate: 28.9 Å2 / Rmerge(I) obs: 0.039 / Net I/σ(I): 27.5
Reflection shellResolution: 2.2→2.3 Å / Redundancy: 3.8 % / Rmerge(I) obs: 0.103 / Mean I/σ(I) obs: 13.1 / % possible all: 96.1
Reflection
*PLUS
Num. measured all: 91667
Reflection shell
*PLUS
% possible obs: 96.1 %

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Processing

Software
NameVersionClassification
X-PLOR3.851model building
X-PLOR3.851refinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLOR3.851phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1GDD

1gdd


Resolution: 2.2→15 Å / Data cutoff high absF: 1000000 / Data cutoff low absF: 0.1 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 1
Details: A BULK SOLVENT CORRECTION WAS APPLIED. NOTE FPART AND PHIPART IN THE STRUCTURE FACTOR FILE.
RfactorNum. reflection% reflectionSelection details
Rfree0.268 2449 9.5 %TO PREVENT MODEL BIAS, THE SAME TEST REFLECTIONS USED IN THE REFINEMENT OF THE STARTING MODEL (1GDD) WERE USED IN THIS REFINEMENT
Rwork0.227 ---
obs0.227 25703 97.3 %-
Displacement parametersBiso mean: 26.6 Å2
Refinement stepCycle: LAST / Resolution: 2.2→15 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2589 0 39 49 2677
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONx_bond_d0.01
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.417
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d23.05
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.275
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it3.391.5
X-RAY DIFFRACTIONx_mcangle_it4.52
X-RAY DIFFRACTIONx_scbond_it4.932
X-RAY DIFFRACTIONx_scangle_it6.622.5
LS refinement shellResolution: 2.2→2.3 Å / Total num. of bins used: 8
RfactorNum. reflection% reflection
Rfree0.319 237 7.6 %
Rwork0.3 2875 -
obs--97.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARHCSDX.PROTOPHCSDX.PRO
X-RAY DIFFRACTION2PARGTP.PROTOPGDP.PRO
X-RAY DIFFRACTION3PARWATER.PROTOPWATER.PRO
X-RAY DIFFRACTION4PARSO4.PROTOPSO4.PRO
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refinement
*PLUS
Rfactor obs: 0.23 / Rfactor Rfree: 0.267
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg23.05
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.275
LS refinement shell
*PLUS
Rfactor obs: 0.3

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