SMTL ID : 3bxx.3 (2 other biounits)

Binding of two substrate analogue molecules to dihydroflavonol 4-reductase alters the functional geometry of the catalytic site

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.90 Å

Oligo State

homo-dimer

Ligands

2 x NAP: NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE(Non-covalent)

NAP.1: 24 residues within 4Å: Chain A: G.12, S.14, G.15, F.16, I.17, G.18, V.36, R.37, K.44, D.64, L.65, V.84, A.85, T.86, P.87, T.126, S.127, K.167, P.190, T.191, L.192, V.193, P.204, S.205 21 PLIP interactions: 21 interactions with chain A Hydrophobic interactions: A:I.17, A:P.190, A:V.193 Hydrogen bonds: A:S.14, A:S.14, A:F.16, A:I.17, A:G.18, A:R.37, A:D.64, A:L.65, A:V.84, A:T.86, A:K.167, A:V.193, A:S.205, A:S.205 Water bridges: A:D.38 Salt bridges: A:R.37, A:K.44 pi-Cation interactions: A:R.37 NAP.2: 24 residues within 4Å: Chain B: S.14, G.15, F.16, I.17, V.36, R.37, K.44, D.64, L.65, V.84, A.85, T.86, P.87, T.126, S.127, K.167, P.190, T.191, L.192, V.193, P.204, S.205 Ligands: QUE.3, QUE.4 20 PLIP interactions: 20 interactions with chain B Hydrophobic interactions: B:P.190 Hydrogen bonds: B:S.14, B:S.14, B:F.16, B:I.17, B:R.37, B:R.37, B:D.64, B:D.64, B:L.65, B:V.84, B:T.86, B:K.167, B:V.193, B:S.205, B:S.205 Water bridges: B:G.12 Salt bridges: B:R.37, B:K.44 pi-Cation interactions: B:R.37

2 x QUE: 3,5,7,3',4'-PENTAHYDROXYFLAVONE(Non-covalent)

QUE.3: 14 residues within 4Å: Chain B: S.128, A.129, G.130, N.133, I.134, L.192, P.204, S.205, T.208, I.222, Q.227, F.292 Ligands: NAP.2, QUE.4 10 PLIP interactions: 10 interactions with chain B Hydrophobic interactions: B:A.129, B:L.192 Hydrogen bonds: B:S.128, B:A.129, B:G.130, B:N.133, B:N.133, B:P.204, B:Q.227, B:Q.227 QUE.4: 11 residues within 4Å: Chain B: M.88, S.128, G.130, A.160, Y.163, F.164, K.167, P.204, I.222 Ligands: NAP.2, QUE.3 7 PLIP interactions: 7 interactions with chain B Hydrophobic interactions: B:Y.163, B:Y.163, B:F.164 Hydrogen bonds: B:S.128, B:S.128, B:G.130 pi-Stacking: B:Y.163

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Trabelsi, N. et al., Structural evidence for the inhibition of grape dihydroflavonol 4-reductase by flavonols. Acta Crystallogr.,Sect.D (2008)

Release Date

2008-10-21

Peptides

dihydroflavonol 4-reductase: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
E

B
F

dihydroflavonol 4-reductase

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