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

crystal structure of QacR(E58Q) bound to berberine

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.85 Å

Oligo State

homo-dimer

Ligands

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

SO4.1: 5 residues within 4Å: Chain A: L.8, K.12, I.56, E.57, K.60 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:E.57 Salt bridges: A:K.12, A:K.60 SO4.2: 4 residues within 4Å: Chain A: T.23, T.24, T.25, K.46 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:T.24, A:T.25 Salt bridges: A:K.46 SO4.3: 3 residues within 4Å: Chain B: N.2, D.5, K.6 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:N.2, B:N.2 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: 3 residues within 4Å: Chain B: 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 SO4.6: 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 SO4.7: 5 residues within 4Å: Chain B: N.2, L.3, K.4, N.38, H.42 5 PLIP interactions: 5 interactions with chain B Hydrogen bonds: B:N.2, B:L.3, B:K.4, B:N.38 Salt bridges: B:H.42

1 x BER: BERBERINE(Non-covalent)

BER.8: 10 residues within 4Å: Chain B: E.57, K.60, W.61, Q.64, S.86, T.89, Y.93, E.120, Y.123, N.157 8 PLIP interactions: 8 interactions with chain B Hydrophobic interactions: B:E.57, B:W.61, B:W.61, B:W.61, B:Y.93, B:Y.123 Hydrogen bonds: B:Q.64 pi-Stacking: B:W.61

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Peters, K.M. et al., QacR-cation recognition is mediated by a redundancy of residues capable of charge neutralization. Biochemistry (2008)

Release Date

2008-08-12

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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