SMTL ID : 3irn.1 (1 other biounit)

Trypanosoma cruzi Dihydrofolate Reductase-Thymidylate Synthase COMPLEXED WITH NADPH AND Cycloguanil

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.60 Å

Oligo State

homo-dimer

Ligands

2 x 1CY: 1-(4-chlorophenyl)-6,6-dimethyl-1,6-dihydro-1,3,5-triazine-2,4-diamine(Non-covalent)

1CY.1: 12 residues within 4Å: Chain A: V.26, V.27, A.28, I.41, D.48, F.52, T.80, I.84, I.154, Y.160, T.178 Ligands: NDP.2 8 PLIP interactions: 8 interactions with chain A Hydrophobic interactions: A:A.28, A:F.52 Hydrogen bonds: A:V.26, A:Y.160, A:T.178, A:T.178 Salt bridges: A:D.48 pi-Stacking: A:F.52 1CY.5: 12 residues within 4Å: Chain B: V.26, V.27, A.28, I.41, D.48, F.52, T.80, I.84, I.154, Y.160, T.178 Ligands: NDP.6 11 PLIP interactions: 11 interactions with chain B Hydrophobic interactions: B:A.28, B:I.41, B:F.52, B:T.80 Hydrogen bonds: B:V.26, B:Y.160, B:T.178, B:T.178 Salt bridges: B:D.48 pi-Stacking: B:F.52 Halogen bonds: B:T.80

2 x NDP: NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE(Non-covalent)

NDP.2: 27 residues within 4Å: Chain A: V.27, A.28, I.35, G.36, D.37, G.38, R.39, S.40, I.41, G.77, R.78, K.79, T.80, L.99, S.100, S.101, T.102, G.130, G.131, I.154, G.155, G.156, G.157, S.158, V.159, Y.160 Ligands: 1CY.1 19 PLIP interactions: 19 interactions with chain A Hydrophobic interactions: A:I.41, A:Y.160 Hydrogen bonds: A:A.28, A:I.35, A:G.38, A:R.39, A:G.77, A:G.77, A:R.78, A:K.79, A:T.80, A:S.101, A:S.101, A:T.102, A:G.157, A:S.158, A:S.158, A:S.158 Salt bridges: A:R.78 NDP.6: 26 residues within 4Å: Chain B: V.27, A.28, I.35, G.38, R.39, S.40, I.41, G.77, R.78, K.79, T.80, S.83, L.99, S.100, S.101, T.102, G.130, G.131, I.154, G.155, G.156, G.157, S.158, V.159, Y.160 Ligands: 1CY.5 19 PLIP interactions: 19 interactions with chain B Hydrogen bonds: B:A.28, B:I.35, B:G.38, B:S.40, B:I.41, B:G.77, B:R.78, B:K.79, B:T.80, B:T.80, B:S.83, B:S.83, B:S.100, B:S.101, B:T.102, B:G.157, B:S.158, B:S.158 Salt bridges: B:R.78

2 x PO4: PHOSPHATE ION(Non-functional Binders)

PO4.3: 4 residues within 4Å: Chain A: R.423, S.424 Chain B: R.383, R.384 4 PLIP interactions: 2 interactions with chain A, 2 interactions with chain B Hydrogen bonds: A:S.424 Salt bridges: A:R.423, B:R.383, B:R.384 PO4.4: 4 residues within 4Å: Chain A: R.383, R.384 Chain B: R.423, S.424 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain A Hydrogen bonds: B:S.424, B:S.424 Salt bridges: B:R.423, A:R.383, A:R.384

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Chitnumsub, P. et al., Structural basis of antifolate inhibition of Trypanosoma cruzi Dihydrofolate Reductase-Thymidylate Synthase. To be Published

Release Date

2010-07-28

Peptides

Bifunctional dihydrofolate reductase-thymidylate synthase: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Bifunctional dihydrofolate reductase-thymidylate synthase

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