SMTL ID : 3br2.1 (2 other biounits)

Crystal Structure of the Complex of Dequalinium Bound to QacR(E120Q), a Mutant of a Multidrug Binding Transcriptional Repressor

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.90 Å

Oligo State

homo-dimer

Ligands

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

SO4.1: 3 residues within 4Å: Chain A: Q.64, E.90, Y.91 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:Q.64, A:Y.91 SO4.2: 7 residues within 4Å: Chain A: F.15, I.16, P.94, L.95, Q.96, N.97, A.98 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:P.94, A:N.97, A:N.97, A:A.98 SO4.3: 4 residues within 4Å: Chain A: D.144, V.145, N.146, A.147 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:D.144, A:N.146, A:A.147 SO4.4: 3 residues within 4Å: Chain B: K.4, Y.41, H.42 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:Y.41 Salt bridges: B:K.4, B:H.42 SO4.5: 4 residues within 4Å: Chain B: L.3, K.4, N.38, H.42 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:L.3, B:K.4, B:N.38 Salt bridges: B:H.42 SO4.6: 4 residues within 4Å: Chain B: V.29, S.35, K.36, G.37 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:K.36, B:G.37 Salt bridges: B:K.36 SO4.7: 4 residues within 4Å: Chain B: T.23, T.24, T.25, K.46 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:T.25 Salt bridges: B:K.46 SO4.8: 3 residues within 4Å: Chain B: R.76, Q.180, N.184 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:Q.180, B:Q.180, B:N.184 Salt bridges: B:R.76 SO4.9: 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 SO4.10: 1 residues within 4Å: Chain B: K.73 1 PLIP interactions: 1 interactions with chain B Salt bridges: B:K.73 SO4.11: 7 residues within 4Å: Chain B: L.8, G.9, K.12, I.53, I.56, E.57, K.60 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:E.57, B:E.57 Salt bridges: B:K.12, B:K.60 SO4.12: 1 residues within 4Å: Chain B: K.6 1 PLIP interactions: 1 interactions with chain B Salt bridges: B:K.6

1 x DEQ: DEQUALINIUM(Non-covalent)

DEQ.13: 12 residues within 4Å: Chain A: N.97, T.161, F.162 Chain B: E.57, E.58, W.61, T.89, Y.93, I.100, Y.103, L.119, Q.120 11 PLIP interactions: 2 interactions with chain A, 9 interactions with chain B Hydrogen bonds: A:N.97, B:T.89, B:T.89 pi-Stacking: A:F.162, B:W.61, B:W.61, B:W.61, B:W.61, B:Y.103 Hydrophobic interactions: B:I.100, B:Y.103

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Brooks, B.E. et al., Formal electrostatic interactions do not govern QacR-cation affinity. To be Published

Release Date

2008-12-23

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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