3QI2 Signaling Protein date Jan 26, 2011
title A Galpha P-Loop Mutation Prevents Transition To The Activate G42r Bound To Rgs14 Goloco
authors D.E.Bosch, F.S.Willard, A.J.Kimple, M.J.Miley, D.P.Siderovski
compound source
Molecule: Guanine Nucleotide-Binding Protein G(I) Subunit A
Chain: A, B
Fragment: Alpha-I1 Subunit, Residues 31-354
Synonym: Adenylate Cyclase-Inhibiting G Alpha Protein
Engineered: Yes
Mutation: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Gnai1
Expression_system: Escherichia Coli
Expression_system_taxid: 511693
Expression_system_strain: Bl21
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Plic-His

Molecule: Regulator Of G-Protein Signaling 14
Chain: C, D
Fragment: Goloco Motif Peptide, Residues 497-532
Synonym: Rgs14
Engineered: Yes

Synthetic: Yes
Other_details: Synthetic Goloco Motif Peptide Identical To Rgs14 497-532
symmetry Space Group: C 2 2 21
R_factor 0.196 R_Free 0.273
length a length b length c angle alpha angle beta angle gamma
70.003 131.018 203.307 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.80 Å
ligand GDP, GOL, SO4 enzyme Hydrolase E.C. BRENDA
A, B

D, C

Primary referenceA P-loop Mutation in Galpha Subunits Prevents Transition to the Active State: Implications for G-protein Signaling in Fungal Pathogenesis., Bosch DE, Willard FS, Ramanujam R, Kimple AJ, Willard MD, Naqvi NI, Siderovski DP, PLoS Pathog. 2012 Feb;8(2):e1002553. Epub 2012 Feb 23. PMID:22383884
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (235 Kb) [Save to disk]
  • Biological Unit Coordinates (3qi2.pdb1.gz) 116 Kb
  • Biological Unit Coordinates (3qi2.pdb2.gz) 116 Kb
  • LPC: Ligand-Protein Contacts for 3QI2
  • CSU: Contacts of Structural Units for 3QI2
  • Structure Factors (162 Kb)
  • Retrieve 3QI2 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3QI2 from S2C, [Save to disk]
  • Re-refined 3qi2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3QI2 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 3QI2
  • 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 3QI2, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1i3qi2, region I:50-122 [Jmol] [rasmolscript] [script source]
  • Fold representative 3qi2 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3qi2_D] [3qi2_B] [3qi2] [3qi2_A] [3qi2_C]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domains found in 3QI2: [G_alpha] [GoLoco ] by SMART
  • Other resources with information on 3QI2
  • Community annotation for 3QI2 at PDBWiki (http://pdbwiki.org)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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