1QPI	Transcription Dna	date	May 25, 1999
title	Crystal Structure Of Tetracycline Repressoroperator Complex
authors	P.Orth, D.Schnappinger, W.Hillen, W.Saenger, W.Hinrichs
compound		source
Molecule: Dna (5'-D(Cpcptpaptpcpapaptpgpaptpap 3'); Chain: M Synonym: Tet Operator Dna Engineered: Yes		Synthetic: Yes Other_details: Dna Sequence Taken From Tet Operator Class D
Molecule: Dna (5'-D(Tpcptpaptpcpaptptpgpaptpap 3'); Chain: N Synonym: Tet Operator Dna Engineered: Yes		Synthetic: Yes
Molecule: Protein (Tetracycline Repressor) Chain: A Synonym: Regulatory Protein Tetr Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: K12 Delta H1 Delta Trp
symmetry	Space Group: C 2 2 21	R_factor 0.244 R_Free 0.307
crystal cell	length a length b length c angle alpha angle beta angle gamma 38.040 193.200 91.750 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	IMD	enzyme
related structures	by homologous chain: 1DU7, 2TRT
Gene Ontology	Chain Function Process Component A
Primary reference	Structural basis of gene regulation by the tetracycline inducible Tet repressor-operator system., Orth P, Schnappinger D, Hillen W, Saenger W, Hinrichs W, Nat Struct Biol 2000 Mar;7(3):215-9. PMID:10700280

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (46 Kb) [Save to disk] Biological Unit Coordinates (1qpi.pdb1.gz) 81 Kb LPC: Ligand-Protein Contacts for 1QPI CSU: Contacts of Structural Units for 1QPI Likely Quarternary Molecular Structure file(s) for 1QPI Structure Factors (88 Kb) Retrieve 1QPI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QPI from S2C, [Save to disk] Re-refined 1qpi structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1QPI 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 1QPI

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 1QPI, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qpia1, region A:4-67 [Jmol] [rasmolscript] [script source]     - Domain d1qpia2, region A:68-206 [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: [1qpi_A] [1qpi] [1qpi_M] [1qpi_N] SWISS-PROT database: [P0ACT4] Domain organization of [TETR4_ECOLX] by SWISSPFAM

Other resources with information on 1QPI

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

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