1USK Transport Protein date Nov 25, 2003
title L-Leucine-Binding Protein With Leucine Bound
authors U.Magnusson, B.Salopek-Sondi, L.A.Luck, S.L.Mowbray
compound source
Molecule: Leucine-Specific Binding Protein
Chain: A, B, C, D
Synonym: L-Leucine-Binding Protein, Ls-Bp, L-Bp
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Expression_system: Escherichia Coli
Expression_system_taxid: 511693
Expression_system_strain: Bl21
Expression_system_plasmid: Pksty
symmetry Space Group: P 1
R_factor 0.212 R_Free 0.252
length a length b length c angle alpha angle beta angle gamma
68.421 70.140 79.902 112.79 93.23 90.97
method X-Ray Diffractionresolution 2.00 Å
ligand LEU enzyme
related structures by homologous chain: 1USI, 2LIV
A, D, C, B

Primary referenceX-ray structures of the leucine-binding protein illustrate conformational changes and the basis of ligand specificity., Magnusson U, Salopek-Sondi B, Luck LA, Mowbray SL, J Biol Chem 2004 Mar 5;279(10):8747-52. Epub 2003 Dec 12. PMID:14672931
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (214 Kb) [Save to disk]
  • Biological Unit Coordinates (1usk.pdb1.gz) 55 Kb
  • Biological Unit Coordinates (1usk.pdb2.gz) 55 Kb
  • Biological Unit Coordinates (1usk.pdb3.gz) 55 Kb
  • Biological Unit Coordinates (1usk.pdb4.gz) 55 Kb
  • LPC: Ligand-Protein Contacts for 1USK
  • CSU: Contacts of Structural Units for 1USK
  • Likely Quarternary Molecular Structure file(s) for 1USK
  • Structure Factors (1062 Kb)
  • Retrieve 1USK in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1USK from S2C, [Save to disk]
  • Re-refined 1usk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1USK 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 1USK
  • 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 1USK, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1uska_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1uskb_, region B [Jmol] [rasmolscript] [script source]
        - Domain d1uskc_, region C [Jmol] [rasmolscript] [script source]
        - Domain d1uskd_, region D [Jmol] [rasmolscript] [script source]
  • Fold representative 1usk from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1usk] [1usk_A] [1usk_C] [1usk_B] [1usk_D]
  • SWISS-PROT database: [P04816]
  • Belongs to the atp-binding cassette (abc) superfamily according to TCDB.
  • Domain organization of [LIVK_ECOLI] by SWISSPFAM
  • Other resources with information on 1USK
  • Community annotation for 1USK 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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