1EFA Transcription Dna date Feb 07, 2000
title Crystal Structure Of The Lac Repressor Dimer Bound To Operat Anti-Inducer Onpf
authors C.E.Bell, M.Lewis
compound source
Molecule: Dna (5'- D(Gpapapttpgptpgpapgpcpgpcptpcpapcpapap
Chain: D, E
Engineered: Yes
Synthetic: Yes

Molecule: Lac Repressor
Chain: A, B, C
Fragment: Residues 1-333
Engineered: Yes
Mutation: Yes

Organism_scientific: Escherichia Coli
Organism_taxid: 562
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: H 3 2
R_factor 0.247 R_Free 0.264
length a length b length c angle alpha angle beta angle gamma
251.438 251.438 204.791 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.60 Å
ligand NPF enzyme
note 1EFA (Molecule of the Month:pdb39)
related structures by homologous chain: 1LBI, 1OSL, 1TLF
A, C, B

Primary referenceA closer view of the conformation of the Lac repressor bound to operator., Bell CE, Lewis M, Nat Struct Biol 2000 Mar;7(3):209-14. PMID:10700279
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (161 Kb) [Save to disk]
  • Biological Unit Coordinates (1efa.pdb1.gz) 113 Kb
  • Biological Unit Coordinates (1efa.pdb2.gz) 45 Kb
  • LPC: Ligand-Protein Contacts for 1EFA
  • CSU: Contacts of Structural Units for 1EFA
  • Likely Quarternary Molecular Structure file(s) for 1EFA
  • Retrieve 1EFA in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1EFA from S2C, [Save to disk]
  • View 1EFA 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 1EFA
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1EFA, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1efaa1, region A:2-60 [Jmol] [rasmolscript] [script source]
        - Domain d1efaa2, region A:61-329 [Jmol] [rasmolscript] [script source]
        - Domain d1efab1, region B:2-60 [Jmol] [rasmolscript] [script source]
        - Domain d1efab2, region B:61-331 [Jmol] [rasmolscript] [script source]
        - Domain d1efac1, region C:46-60 [Jmol] [rasmolscript] [script source]
        - Domain d1efac2, region C:61-331 [Jmol] [rasmolscript] [script source]
  • Fold representative 1efa 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: [1efa_C] [1efa_B] [1efa_A] [1efa] [1efa_D] [1efa_E]
  • SWISS-PROT database: [P03023]
  • Domain organization of [LACI_ECOLI] by SWISSPFAM
  • Domain found in 1EFA: [HTH_LACI ] by SMART
  • Other resources with information on 1EFA
  • Community annotation for 1EFA at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Domain movements in 1EFA from the Database of Macromolecular Movements.
  • Images from IMB Jena Image Library of Biological Macromolecules.

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