SMTL ID : 3pm1.1

Structure of QacR E90Q bound to Ethidium

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.80 Å

Oligo State

homo-dimer

Ligands

7 x SO4: SULFATE ION(Non-functional Binders)

SO4.1: 3 residues within 4Å: Chain A: R.76, Y.80, Q.180 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:Y.80, A:Q.180 Water bridges: A:R.76 Salt bridges: A:R.76 SO4.2: 2 residues within 4Å: Chain A: L.186, S.187 No protein-ligand interaction detected (PLIP) SO4.3: 5 residues within 4Å: Chain A: S.141, I.142, N.143, D.144 Chain B: K.177 4 PLIP interactions: 3 interactions with chain A, 1 interactions with chain B Hydrogen bonds: A:N.143, A:N.143, A:D.144 Salt bridges: B:K.177 SO4.4: 2 residues within 4Å: Chain A: H.128, K.132 3 PLIP interactions: 3 interactions with chain A Water bridges: A:N.146 Salt bridges: A:H.128, A:K.132 SO4.6: 2 residues within 4Å: Chain B: K.30, E.33 1 PLIP interactions: 1 interactions with chain B Salt bridges: B:K.30 SO4.7: 2 residues within 4Å: Chain B: H.128, K.132 2 PLIP interactions: 2 interactions with chain B Salt bridges: B:H.128, B:K.132 SO4.8: 2 residues within 4Å: Chain B: W.140, S.141 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:S.141

1 x ET: ETHIDIUM(Non-covalent)

ET.5: 9 residues within 4Å: Chain B: W.61, S.86, Q.90, Q.96, E.120, Y.123, A.153, N.154, N.157 5 PLIP interactions: 5 interactions with chain B Hydrophobic interactions: B:E.120, B:Y.123 Hydrogen bonds: B:N.154 pi-Stacking: B:Y.123, B:Y.123

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Peters, K.M. et al., A single acidic residue can guide binding site selection but does not govern QacR cationic-drug affinity. Plos One (2011)

Release Date

2011-07-13

Peptides

HTH-type transcriptional regulator qacR: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
A

HTH-type transcriptional regulator qacR

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