SMTL ID : 4dfr.1

CRYSTAL STRUCTURES OF ESCHERICHIA COLI AND LACTOBACILLUS CASEI DIHYDROFOLATE REDUCTASE REFINED AT 1.7 ANGSTROMS RESOLUTION. I. GENERAL FEATURES AND BINDING OF METHOTREXATE

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 1.70 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 MTX: METHOTREXATE(Non-covalent)

MTX.2: 16 residues within 4Å: Chain A: I.5, A.6, A.7, D.27, L.28, F.31, K.32, T.46, S.49, 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:L.28, A:F.31, A:L.54 Hydrogen bonds: A:I.5, A:R.52, A:Y.100, A:T.113, A:T.113 Water bridges: A:A.7, A:A.7, A:D.27, A:K.32, A:K.32 Salt bridges: A:D.27, A:K.32, A:R.52, A:R.57 MTX.5: 14 residues within 4Å: Chain B: I.5, A.6, A.7, D.27, L.28, F.31, K.32, I.50, R.52, L.54, R.57, I.94, Y.100, T.113 15 PLIP interactions: 15 interactions with chain B Hydrophobic interactions: B:L.28, B:L.28, B:F.31, B:L.54 Hydrogen bonds: B:I.5, B:R.52, B:T.113, B:T.113 Water bridges: B:A.6, B:A.7, B:Y.100, B:Y.100 Salt bridges: B:D.27, B:R.52, 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.12

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Bolin, J.T. et al., Crystal structures of Escherichia coli and Lactobacillus casei dihydrofolate reductase refined at 1.7 A resolution. I. General features and binding of methotrexate. J.Biol.Chem. (1982)

Release Date

1982-10-21

Peptides

DIHYDROFOLATE REDUCTASE: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

DIHYDROFOLATE REDUCTASE

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