2QKH Signaling Protein Hormone date Jul 11, 2007
title Crystal Structure Of The Extracellular Domain Of Human Gip R Complex With The Hormone Gip
authors C.Parthier, M.Kleinschmidt, P.Neumann, R.Rudolph, S.Manhart, D.Sc J.Fanghanel, J.U.Rahfeld, H.U.Demuth, M.T.Stubbs
compound source
Molecule: Glucose-Dependent Insulinotropic Polypeptide
Chain: B
Fragment: Sequence Database Residues 52-93
Synonym: Gastric Inhibitory Polypeptide, Gip
Engineered: Yes
Synthetic: Yes
Other_details: The Peptide Is Naturally Found In Homo Sapie (Human).;

Molecule: Glucose-Dependent Insulinotropic Polypeptide Rece
Chain: A
Fragment: Extracellular Domain, Residues 29-138
Synonym: Gastric Inhibitory Polypeptide Receptor, Gip-R
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Gipr
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21(De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet-28a
symmetry Space Group: H 3 2
R_factor 0.166 R_Free 0.183
length a length b length c angle alpha angle beta angle gamma
84.007 84.007 180.947 90.00 90.00 120.00
method X-Ray Diffractionresolution 1.90 Å
ligand GLC, TAR, ZB0, ZB1, ZB2, ZB3 enzyme
note 2QKH is a representative structure


Primary referenceCrystal structure of the incretin-bound extracellular domain of a G protein-coupled receptor., Parthier C, Kleinschmidt M, Neumann P, Rudolph R, Manhart S, Schlenzig D, Fanghanel J, Rahfeld JU, Demuth HU, Stubbs MT, Proc Natl Acad Sci U S A. 2007 Aug 28;104(35):13942-7. Epub 2007 Aug 21. PMID:17715056
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (55 Kb) [Save to disk]
  • Biological Unit Coordinates (2qkh.pdb1.gz) 48 Kb
  • LPC: Ligand-Protein Contacts for 2QKH
  • CSU: Contacts of Structural Units for 2QKH
  • Likely Quarternary Molecular Structure file(s) for 2QKH
  • Structure Factors (11404 Kb)
  • Retrieve 2QKH in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2QKH from S2C, [Save to disk]
  • Re-refined 2qkh structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2QKH 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 2QKH
  • 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 2QKH, from MSDmotif at EBI
  • Fold representative 2qkh from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2qkh] [2qkh_B] [2qkh_A]
  • SWISS-PROT database: [P48546] [P09681]
  • Belongs to the g-protein-coupled receptor (gpcr) family according to TCDB.
  • Domain organization of [GIPR_HUMAN] [GIP_HUMAN] by SWISSPFAM
  • Domains found in 2QKH: [GLUCA] [HormR ] by SMART
  • Other resources with information on 2QKH
  • Community annotation for 2QKH 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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