SMTL ID : 1qvu.3 (2 other biounits)

Crystal structure of the multidrug binding transcriptional repressor QacR bound to two drugs: ethidium and proflavine

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.96 Å

Oligo State

homo-tetramer

Ligands

2 x ET: ETHIDIUM(Non-covalent)

ET.1: 12 residues within 4Å: Chain A: N.97, F.162 Chain B: Q.96, I.100, Y.103, T.104, Y.107, E.120, Y.123, N.157, T.161 Ligands: PRL.2 8 PLIP interactions: 6 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:I.100, B:Y.103, B:T.104, B:E.120, B:Y.123, A:F.162 Hydrogen bonds: B:Q.96, A:N.97 ET.3: 12 residues within 4Å: Chain C: N.97, F.162 Chain D: Q.96, I.100, Y.103, T.104, Y.107, E.120, Y.123, N.157, T.161 Ligands: PRL.4 8 PLIP interactions: 6 interactions with chain D, 2 interactions with chain C Hydrophobic interactions: D:I.100, D:Y.103, D:T.104, D:E.120, D:Y.123, C:F.162 Hydrogen bonds: D:Q.96, C:N.97

2 x PRL: PROFLAVIN(Non-covalent)

PRL.2: 8 residues within 4Å: Chain B: L.54, E.58, W.61, T.89, E.90, Y.93, Y.103 Ligands: ET.1 8 PLIP interactions: 8 interactions with chain B Hydrophobic interactions: B:L.54, B:W.61, B:W.61 Hydrogen bonds: B:T.89, B:T.89, B:Y.103, B:Y.103 pi-Stacking: B:Y.93 PRL.4: 8 residues within 4Å: Chain D: L.54, E.58, W.61, T.89, E.90, Y.93, Y.103 Ligands: ET.3 6 PLIP interactions: 6 interactions with chain D Hydrophobic interactions: D:L.54, D:W.61, D:W.61 Hydrogen bonds: D:T.89, D:Y.103 pi-Stacking: D:Y.93

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Schumacher, M.A. et al., Structural mechanism of the simultaneous binding of two drugs to a multidrug-binding protein. Embo J. (2004)

Release Date

2004-08-03

Peptides

Transcriptional regulator qacR: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
A

C
B

D
A

Transcriptional regulator qacR

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