1R9Q Protein Binding date Oct 30, 2003
title Structure Analysis Of Prox In Complex With Proline Betaine
authors A.Schiefner, J.Breed, L.Bosser, S.Kneip, J.Gade, G.Holtmann, K.Die W.Welte, E.Bremer
compound source
Molecule: Glycine Betaine-Binding Periplasmic Protein
Chain: A
Synonym: Periplasmic Ligand-Binding Protein Prox
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Gene: Prox
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Pd141
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Psk7
symmetry Space Group: P 21 21 21
R_factor 0.172 R_Free 0.213
length a length b length c angle alpha angle beta angle gamma
47.710 54.980 115.730 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.05 Å
ligand PBE, UNX enzyme
related structures by homologous chain: 1R9L

Primary referenceCation-pi interactions as determinants for binding of the compatible solutes glycine betaine and proline betaine by the periplasmic ligand-binding protein ProX from Escherichia coli., Schiefner A, Breed J, Bosser L, Kneip S, Gade J, Holtmann G, Diederichs K, Welte W, Bremer E, J Biol Chem 2004 Feb 13;279(7):5588-96. Epub 2003 Nov 11. PMID:14612446
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (54 Kb) [Save to disk]
  • Biological Unit Coordinates (1r9q.pdb1.gz) 50 Kb
  • LPC: Ligand-Protein Contacts for 1R9Q
  • CSU: Contacts of Structural Units for 1R9Q
  • Likely Quarternary Molecular Structure file(s) for 1R9Q
  • Structure Factors (142 Kb)
  • Retrieve 1R9Q in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1R9Q from S2C, [Save to disk]
  • Re-refined 1r9q structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1R9Q 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 1R9Q
  • 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 1R9Q, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1r9qa_, region A [Jmol] [rasmolscript] [script source]
  • Fold representative 1r9q from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1r9q] [1r9q_A]
  • SWISS-PROT database: [P0AFM2]
  • Belongs to the atp-binding cassette (abc) superfamily according to TCDB.
  • Domain organization of [PROX_ECOLI] by SWISSPFAM
  • Other resources with information on 1R9Q
  • Community annotation for 1R9Q 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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