1ORK

TET REPRESSOR, CLASS D IN COMPLEX WITH 9-(N,N-DIMETHYLGLYCYLAMIDO)-6-DEMETHYL-6-DEOXY-TETRACYCLINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Crystal structure of the tet repressor in complex with a novel tetracycline, 9-(N,N-dimethylglycylamido)- 6-demethyl-6-deoxy-tetracycline.

Orth, P.Schnappinger, D.Sum, P.E.Ellestad, G.A.Hillen, W.Saenger, W.Hinrichs, W.

(1999) J Mol Biol 285: 455-461

  • DOI: https://doi.org/10.1006/jmbi.1998.2290
  • Primary Citation of Related Structures:  
    1ORK

  • PubMed Abstract: 

    The tetracycline analog 9-(N, N-dimethylglycylamido)-6-demethyl-6-deoxy-tetracycline (9glyTc) belongs to a new group of tetracyclines called glycylcyclines. They are strong antibiotics showing reduced sensitivity against the major tetracycline resistance mechanisms. We have determined the crystal structure of 9glyTc in complex with Tet repressor class D, TetR(D), at 2.4 A resolution. Sterical hindrance at the entrance of the tetracycline binding tunnel of TetR by the bulky and charged glycyl amido substituent interferes with conformational changes required for the mechanism of induction, and leads to decreased induction efficiency as observed for point mutations of amino acid residues located in the neighbourhood to the glycylamido moiety of bound 9glyTc.


  • Organizational Affiliation

    Freie Universität Berlin, Takustr. 6, Berlin, D-14195, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TETRACYCLINE REPRESSOR207Escherichia coliMutation(s): 0 
UniProt
Find proteins for P0ACT4 (Escherichia coli)
Explore P0ACT4 
Go to UniProtKB:  P0ACT4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0ACT4
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ATC
Query on ATC

Download Ideal Coordinates CCD File 
C [auth A]9-(N,N-DIMETHYLGLYCYLAMIDO)-6-DEOXY-6-DEMETHYL-TETRACYCLINE
C25 H30 N4 O8
OAZYAPOSQALFER-CLPWGHEBSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
B [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
ATC PDBBind:  1ORK Kd: 1.56 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.94α = 90
b = 68.94β = 90
c = 180.75γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MOSFLMdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-06-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description
  • Version 1.4: 2024-05-22
    Changes: Data collection