SMTL ID : 1dlr.1

METHOTREXATE-RESISTANT VARIANTS OF HUMAN DIHYDROFOLATE REDUCTASE WITH SUBSTITUTION OF LEUCINE 22: KINETICS, CRYSTALLOGRAPHY AND POTENTIAL AS SELECTABLE MARKERS

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.30 Å

Oligo State

monomer

Ligands

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

NDP.1: 30 residues within 4Å: Chain A: V.8, A.9, I.16, G.17, K.18, G.20, D.21, F.22, W.24, G.53, K.54, K.55, T.56, S.59, L.75, S.76, R.77, E.78, R.91, S.92, V.115, G.116, G.117, S.118, S.119, V.120, Y.121, E.123, T.146 Ligands: MXA.2 23 PLIP interactions: 23 interactions with chain A Hydrophobic interactions: A:F.22, A:T.56 Hydrogen bonds: A:A.9, A:I.16, A:K.18, A:G.20, A:G.20, A:G.53, A:K.54, A:K.55, A:T.56, A:S.59, A:R.77, A:R.77, A:E.78, A:G.117, A:S.118, A:E.123, A:E.123 Water bridges: A:K.55, A:L.93, A:L.93 Salt bridges: A:K.54

1 x MXA: 6-(2,5-DIMETHOXY-BENZYL)-5-METHYL-PYRIDO[2,3-D]PYRIMIDINE-2,4-DIAMINE(Non-covalent)

MXA.2: 14 residues within 4Å: Chain A: I.7, V.8, A.9, F.22, E.30, F.31, F.34, S.59, I.60, P.61, N.64, V.115, T.136 Ligands: NDP.1 12 PLIP interactions: 12 interactions with chain A Hydrophobic interactions: A:F.22, A:F.22, A:F.31, A:F.34, A:I.60 Hydrogen bonds: A:I.7, A:V.8, A:N.64, A:T.136 Salt bridges: A:E.30 pi-Stacking: A:F.22, A:F.34

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Lewis, W.S. et al., Methotrexate-resistant variants of human dihydrofolate reductase with substitutions of leucine 22. Kinetics, crystallography, and potential as selectable markers. J.Biol.Chem. (1995)

Release Date

1995-04-20

Peptides

DIHYDROFOLATE REDUCTASE: A

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

DIHYDROFOLATE REDUCTASE