1A6I	Transcription Regulation	date	Feb 25, 1998
title	Tet Repressor, Class D Variant
authors	P.Orth, F.Cordes, D.Schnappinger, W.Hillen, W.Saenger, W.Hinrichs
compound		source
Molecule: Tetracycline Repressor Protein Class D Chain: A Synonym: Tet Repressor, Class D Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Strain: K12 Delta H1 Delta Trp Cellular_location: Cytoplasm Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Pwh610 (Bd)51-208
symmetry	Space Group: I 41 2 2	R_factor 0.214 R_Free 0.275
crystal cell	length a length b length c angle alpha angle beta angle gamma 69.810 69.810 184.950 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.40 Å
related structures	by homologous chain: 1BJZ, 1ORK
Gene Ontology	Chain Function Process Component A
Primary reference	Conformational changes of the Tet repressor induced by tetracycline trapping., Orth P, Cordes F, Schnappinger D, Hillen W, Saenger W, Hinrichs W, J Mol Biol 1998 Jun 5;279(2):439-47. PMID:9642048

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (36 Kb) [Save to disk] Biological Unit Coordinates (1a6i.pdb1.gz) 62 Kb CSU: Contacts of Structural Units for 1A6I Likely Quarternary Molecular Structure file(s) for 1A6I Structure Factors (81 Kb) Retrieve 1A6I in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A6I from S2C, [Save to disk] Re-refined 1a6i structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1A6I 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 1A6I

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 1A6I, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a6i_1, region 2-67 [Jmol] [rasmolscript] [script source]     - Domain d1a6i_2, region 68-208 [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: [1a6i_A] [1a6i] SWISS-PROT database: [P0ACT4] Domain organization of [TETR4_ECOLX] by SWISSPFAM

Other resources with information on 1A6I

Community annotation for 1A6I at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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