SMTL ID : 1dyh.1

ISOMORPHOUS CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE, 5-DEAZAFOLATE AND 5,10-DIDEAZATETRAHYDROFOLATE: MECHANISTIC IMPLICATIONS

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.90 Å

Oligo State

homo-dimer

Ligands

2 x CL: CHLORIDE ION(Non-functional Binders)

CL.1: 5 residues within 4Å: Chain A: G.43, R.44, H.45, T.46, G.96 Ligand excluded by PLIP CL.3: 4 residues within 4Å: Chain B: G.43, H.45, T.46, G.96 Ligand excluded by PLIP

2 x DZF: 5-DEAZAFOLIC ACID(Non-covalent)

DZF.2: 15 residues within 4Å: Chain A: I.5, A.6, A.7, D.27, L.28, F.31, K.32, T.46, I.50, R.52, L.54, R.57, I.94, Y.100, T.113 17 PLIP interactions: 17 interactions with chain A Hydrophobic interactions: A:F.31, A:F.31, A:I.50, A:I.50, A:L.54 Hydrogen bonds: A:A.6, A:A.6, A:L.28, A:R.52, A:Y.100, A:T.113 Water bridges: A:A.7, A:D.27, A:D.27, A:A.29 Salt bridges: A:D.27, A:R.57 DZF.5: 16 residues within 4Å: Chain B: I.5, A.6, A.7, D.27, L.28, W.30, F.31, K.32, T.46, I.50, R.52, L.54, R.57, I.94, Y.100, T.113 12 PLIP interactions: 12 interactions with chain B Hydrophobic interactions: B:F.31, B:I.50, B:I.50 Hydrogen bonds: B:A.6, B:R.52, B:T.113, B:T.113 Water bridges: B:A.7 Salt bridges: B:D.27, B:K.32, B:K.32, B:R.57

1 x CA: CALCIUM ION(Non-covalent)

CA.4: 1 residues within 4Å: Chain B: S.135 3 PLIP interactions: 1 interactions with chain B, 2 Ligand-Water interactions Metal complexes: B:S.135, H2O.11, H2O.11

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Reyes, V.M. et al., Isomorphous crystal structures of Escherichia coli dihydrofolate reductase complexed with folate, 5-deazafolate, and 5,10-dideazatetrahydrofolate: mechanistic implications. Biochemistry (1995)

Release Date

1995-06-03

Peptides

DIHYDROFOLATE REDUCTASE: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

DIHYDROFOLATE REDUCTASE

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