1LBG	Transcription Dna	date	Jan 03, 1996
title	Lactose Operon Repressor Bound To 21-Base Pair Symmetric Ope Alpha Carbons Only
authors	M.Lewis, G.Chang, N.C.Horton, M.A.Kercher, H.C.Pace, P.Lu
compound		source
Molecule: Dna (5'- D(Gpapaptptpgptpgpapgpcpgpcptpcpapcpapap 3'); Chain: E, F, G, H Engineered: Yes		Synthetic: Yes
Molecule: Protein (Lactose Operon Repressor) Chain: A, B, C, D Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Strain: Gm1 Gene: Laci Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Piq Expression_system_gene: Laci
symmetry	Space Group: C 1 2 1	R_factor 0.260 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 104.300 224.400 112.100 90.00 95.70 90.00
method	X-Ray Diffraction	resolution	4.80 Å
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Crystal structure of the lactose operon repressor and its complexes with DNA and inducer., Lewis M, Chang G, Horton NC, Kercher MA, Pace HC, Schumacher MA, Brennan RG, Lu P, Science 1996 Mar 1;271(5253):1247-54. PMID:8638105

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (59 Kb) [Save to disk] Biological Unit Coordinates (1lbg.pdb1.gz) 29 Kb Biological Unit Coordinates (1lbg.pdb2.gz) 29 Kb CSU: Contacts of Structural Units for 1LBG Likely Quarternary Molecular Structure file(s) for 1LBG Retrieve 1LBG in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1LBG from S2C, [Save to disk]

View 1LBG 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 1LBG

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1LBG, from MSDmotif at EBI Genome occurence of 1LBG's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1lbga1, region A:1-60 [Jmol] [rasmolscript] [script source]     - Domain d1lbga2, region A:61-357 [Jmol] [rasmolscript] [script source]     - Domain d1lbgb1, region B:1-60 [Jmol] [rasmolscript] [script source]     - Domain d1lbgb2, region B:61-357 [Jmol] [rasmolscript] [script source]     - Domain d1lbgc1, region C:1-60 [Jmol] [rasmolscript] [script source]     - Domain d1lbgc2, region C:61-357 [Jmol] [rasmolscript] [script source]     - Domain d1lbgd1, region D:1-60 [Jmol] [rasmolscript] [script source]     - Domain d1lbgd2, region D:61-357 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1lbg_A] [1lbg_C] [1lbg_H] [1lbg_F] [1lbg] [1lbg_D] [1lbg_B] [1lbg_E] [1lbg_G] SWISS-PROT database: [P03023] Domain organization of [LACI_ECOLI] by SWISSPFAM Domain found in 1LBG: [HTH_LACI ] by SMART

Other resources with information on 1LBG

Community annotation for 1LBG at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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