1Q1B Transport Protein date Jul 18, 2003
title Crystal Structure Of E. Coli Malk In The Nucleotide-Free For
authors J.Chen, G.Lu, J.Lin, A.L.Davidson, F.A.Quiocho
compound source
Molecule: Maltosemaltodextrin Transport Atp-Binding Protei
Chain: A, B, C, D
Engineered: Yes
 Organism_scientific: Escherichia Coli
Organism_taxid: 83333
Strain: K12
Gene: Malk Or B4035 Or Z5633 Or Ecs5018
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Hn741
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pkps2e-86
symmetry Space Group: P 1
R_factor 0.249 R_Free 0.304
crystal
cell
length a length b length c angle alpha angle beta angle gamma
60.617 93.540 99.796 77.63 79.38 73.20
method X-Ray Diffractionresolution 2.80 Å
related structures by homologous chain: 1Q12, 1Q1E
Gene
Ontology
ChainFunctionProcessComponent
A, D, C, B
  • maltose-transporting ATPase ...


    • Primary referenceA tweezers-like motion of the ATP-binding cassette dimer in an ABC transport cycle., Chen J, Lu G, Lin J, Davidson AL, Quiocho FA, Mol Cell 2003 Sep;12(3):651-61. PMID:14527411
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (230 Kb) [Save to disk]
  • Biological Unit Coordinates (1q1b.pdb1.gz) 114 Kb
  • Biological Unit Coordinates (1q1b.pdb2.gz) 114 Kb
  • CSU: Contacts of Structural Units for 1Q1B
  • Likely Quarternary Molecular Structure file(s) for 1Q1B
  • Structure Factors (696 Kb)
  • Retrieve 1Q1B in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1Q1B from S2C, [Save to disk]
  • Re-refined 1q1b structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 1Q1B 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 1Q1B
  • 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
  • 3D motif for 1Q1B, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1q1ba1, region A:236-370 [Jmol] [rasmolscript] [script source]
        - Domain d1q1ba2, region A:4-235 [Jmol] [rasmolscript] [script source]
        - Domain d1q1bb1, region B:236-370 [Jmol] [rasmolscript] [script source]
        - Domain d1q1bb2, region B:4-235 [Jmol] [rasmolscript] [script source]
        - Domain d1q1bc1, region C:236-370 [Jmol] [rasmolscript] [script source]
        - Domain d1q1bc2, region C:4-235 [Jmol] [rasmolscript] [script source]
        - Domain d1q1bd1, region D:236-370 [Jmol] [rasmolscript] [script source]
        - Domain d1q1bd2, region D:4-235 [Jmol] [rasmolscript] [script source]
  • 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: [1q1b_A] [1q1b_B] [1q1b_C] [1q1b_D] [1q1b]
  • SWISS-PROT database: [P68187]
  • Belongs to the atp-binding cassette (abc) superfamily according to TCDB.
  • Domain organization of [MALK_ECOLI] by SWISSPFAM
  • Domain found in 1Q1B: [AAA ] by SMART
    • Other resources with information on 1Q1B
  • Community annotation for 1Q1B 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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