2G83 Signaling Protein date Mar 01, 2006
title Structure Of Activated G-Alpha-I1 Bound To A Nucleotide- State-Selective Peptide: Minimal Determinants For Recognizing The Active Form Of A G Protein Alpha Subunit
authors C.A.Johnston, J.K.Ramer, R.Blaesius, B.Kuhlman, V.Y.Arshavsky, D.P.Siderovski
compound source
Molecule: Guanine Nucleotide-Binding Protein G(I), Alpha-1 Subunit;
Chain: A, B
Synonym: Adenylate Cyclase-Inhibiting G Alpha Protein
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Gnai1
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21(De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Ppro-Exhtb1

Molecule: Kb-1753 Phage Display Peptide
Chain: C, D
Engineered: Yes

Synthetic: Yes
Other_details: Phage-Derived Peptide
symmetry Space Group: P 32 2 1
R_factor 0.269 R_Free 0.300
length a length b length c angle alpha angle beta angle gamma
103.130 103.130 206.990 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.80 Å
ligand ALF, GDP, MG enzyme
A, B

Primary referenceMinimal Determinants for Binding Activated Galpha from the Structure of a Galpha(i1)-Peptide Dimer(,)., Johnston CA, Lobanova ES, Shavkunov AS, Low J, Ramer JK, Blaesius R, Fredericks Z, Willard FS, Kuhlman B, Arshavsky VY, Siderovski DP, Biochemistry. 2006 Sep 26;45(38):11390-11400. PMID:16981699
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (115 Kb) [Save to disk]
  • Biological Unit Coordinates (2g83.pdb1.gz) 55 Kb
  • Biological Unit Coordinates (2g83.pdb2.gz) 55 Kb
  • LPC: Ligand-Protein Contacts for 2G83
  • CSU: Contacts of Structural Units for 2G83
  • Likely Quarternary Molecular Structure file(s) for 2G83
  • Structure Factors (383 Kb)
  • Retrieve 2G83 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2G83 from S2C, [Save to disk]
  • Re-refined 2g83 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2G83 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 2G83
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 2G83, from MSDmotif at EBI
  • Fold representative 2g83 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2g83_B] [2g83_D] [2g83] [2g83_C] [2g83_A]
  • SWISS-PROT database: [P63096]
  • Domain organization of [GNAI1_HUMAN] by SWISSPFAM
  • Domain found in 2G83: [G_alpha ] by SMART
  • Other resources with information on 2G83
  • Community annotation for 2G83 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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