2QCB Biotin Binding Protein date Jun 19, 2007
title T7-Tagged Full-Length Streptavidin Complexed With Ruthenium
authors I.Le Trong, M.Creus, A.Pordea, T.R.Ward, R.E.Stenkamp
compound source
Molecule: Streptavidin
Chain: A
Engineered: Yes
Mutation: Yes
Organism_scientific: Streptomyces Avidinii
Organism_taxid: 1895
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Pet11b
symmetry Space Group: I 41 2 2
R_factor 0.168 R_Free 0.187
length a length b length c angle alpha angle beta angle gamma
57.651 57.651 183.823 90.00 90.00 90.00
method X-Ray Diffractionresolution 1.65 Å
ligand KYS enzyme

Primary referenceX-ray structure and designed evolution of an artificial transfer hydrogenase., Creus M, Pordea A, Rossel T, Sardo A, Letondor C, Ivanova A, Letrong I, Stenkamp RE, Ward TR, Angew Chem Int Ed Engl. 2008;47(8):1400-4. PMID:18176932
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (49 Kb) [Save to disk]
  • Biological Unit Coordinates (2qcb.pdb1.gz) 173 Kb
  • LPC: Ligand-Protein Contacts for 2QCB
  • CSU: Contacts of Structural Units for 2QCB
  • Likely Quarternary Molecular Structure file(s) for 2QCB
  • Structure Factors (142 Kb)
  • Retrieve 2QCB in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2QCB from S2C, [Save to disk]
  • Re-refined 2qcb structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2QCB 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 2QCB
  • 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 2QCB, from MSDmotif at EBI
  • Fold representative 2qcb from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2qcb_A] [2qcb]
  • SWISS-PROT database: [P22629]
  • Domain organization of [SAV_STRAV] by SWISSPFAM
  • Other resources with information on 2QCB
  • Community annotation for 2QCB 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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