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- PDB-1tag: STRUCTURAL DETERMINANTS FOR ACTIVATION OF THE ALPHA-SUBUNIT OF A ... -

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Basic information

Entry
Database: PDB / ID: 1tag
TitleSTRUCTURAL DETERMINANTS FOR ACTIVATION OF THE ALPHA-SUBUNIT OF A HETEROTRIMERIC G PROTEIN
ComponentsTRANSDUCIN-ALPHA
KeywordsGTP-BINDING PROTEIN / G-PROTEIN / GTPASE / TRANSDUCIN
Function / homology
Function and homology information


negative regulation of cyclic-nucleotide phosphodiesterase activity / G protein-coupled receptor complex / Inactivation, recovery and regulation of the phototransduction cascade / Activation of the phototransduction cascade / acyl binding / photoreceptor outer segment membrane / G alpha (i) signalling events / response to light stimulus / phototransduction / visual perception ...negative regulation of cyclic-nucleotide phosphodiesterase activity / G protein-coupled receptor complex / Inactivation, recovery and regulation of the phototransduction cascade / Activation of the phototransduction cascade / acyl binding / photoreceptor outer segment membrane / G alpha (i) signalling events / response to light stimulus / phototransduction / visual perception / photoreceptor inner segment / G protein-coupled receptor binding / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / photoreceptor disc membrane / GDP binding / heterotrimeric G-protein complex / GTPase activity / GTP binding / protein kinase binding / metal ion binding
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
GUANOSINE-5'-DIPHOSPHATE / Guanine nucleotide-binding protein G(t) subunit alpha-1
Similarity search - Component
Biological speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / Resolution: 1.8 Å
AuthorsLambright, D.G. / Noel, J.P. / Hamm, H.E. / Sigler, P.B.
Citation
Journal: Nature / Year: 1994
Title: Structural determinants for activation of the alpha-subunit of a heterotrimeric G protein.
Authors: Lambright, D.G. / Noel, J.P. / Hamm, H.E. / Sigler, P.B.
#1: Journal: Nature / Year: 1993
Title: The 2.2 Angstroms Crystal Structure of Transducin-Alpha Complexed with GTP-Gamma-S
Authors: Noel, J.P. / Hamm, H.E. / Sigler, P.B.
History
DepositionNov 23, 1994Processing site: BNL
Revision 1.0Feb 7, 1995Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 29, 2017Group: Derived calculations / Other
Category: pdbx_database_status / struct_conf / struct_conf_type
Item: _pdbx_database_status.process_site
Revision 1.4Feb 14, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / 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_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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: TRANSDUCIN-ALPHA
hetero molecules


Theoretical massNumber of molelcules
Total (without water)37,6093
Polymers37,1411
Non-polymers4682
Water6,125340
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)71.900, 87.800, 143.100
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number23
Space group name H-MI222

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Components

#1: Protein TRANSDUCIN-ALPHA


Mass: 37141.465 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bos taurus (cattle) / Tissue: RETINA CELL: / Organ: EYE RETINA / References: UniProt: P04695
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#3: 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
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 340 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 3.04 Å3/Da / Density % sol: 59.54 %
Crystal grow
*PLUS
pH: 6 / Method: vapor diffusion, hanging drop / Details: using macroseeding
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
113.3 mg/mlprotein1drop
26 %PEG80001drop
36.67 %1dropglycerol
433.3 mMMES1drop
5133 mM1dropMgCl2
60.1 %beta-mercaptoethanol1drop
79 %PEG80001reservoir
810 %glycerol1reservoir
950 mMMES1reservoir
10200 mM1reservoirMgCl2
110.1 %beta-mercaptoethanol1reservoir

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Data collection

ReflectionNum. obs: 41071 / % possible obs: 98.3 % / Observed criterion σ(I): 3
Reflection
*PLUS
Highest resolution: 1.8 Å / Rmerge(I) obs: 0.124

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementResolution: 1.8→8 Å / σ(F): 2
RfactorNum. reflection% reflection
Rfree0.211 --
Rwork0.187 --
obs0.187 41071 98.3 %
Displacement parametersBiso mean: 20.7 Å2
Refine analyzeLuzzati coordinate error obs: 0.1 Å
Refinement stepCycle: LAST / Resolution: 1.8→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2522 0 29 340 2891
Refine LS restraints
Refine-IDTypeDev ideal
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_deg1.46
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Software
*PLUS
Name: X-PLOR / Classification: refinement
Refinement
*PLUS
Rfactor obs: 0.187 / Rfactor Rfree: 0.211 / Rfactor Rwork: 0.187
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: x_angle_d / Dev ideal: 1.46

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