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SMTL ID : 3drc.1
INVESTIGATION OF THE FUNCTIONAL ROLE OF TRYPTOPHAN-22 IN ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE BY SITE-DIRECTED MUTAGENESIS
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
MTX
:
METHOTREXATE
(Non-covalent)
MTX.2:
15 residues within 4Å:
Chain A:
I.5
,
A.6
,
A.7
,
D.27
,
L.28
,
F.31
,
K.32
,
S.49
,
I.50
,
R.52
,
L.54
,
R.57
,
I.94
,
Y.100
,
T.113
19
PLIP interactions
:
19 interactions with chain A
Hydrophobic interactions:
A:L.28
,
A:F.31
,
A:I.50
Hydrogen bonds:
A:I.5
,
A:I.5
,
A:A.6
,
A:R.52
,
A:Y.100
,
A:T.113
Water bridges:
A:A.6
,
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
16
PLIP interactions
:
16 interactions with chain B
Hydrophobic interactions:
B:L.28
,
B:L.28
,
B:F.31
,
B:I.50
Hydrogen bonds:
B:I.5
,
B:R.52
,
B:T.113
,
B:T.113
Water bridges:
B:A.6
,
B:A.7
,
B:K.32
,
B:Y.100
Salt bridges:
B:D.27
,
B:K.32
,
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
,
H
2
O.10
,
H
2
O.10
Links
RCSB
PDBe
PDBe-KB
PDBj
PDBsum
CATH
PLIP
Citation
Warren, M.S. et al., Investigation of the functional role of tryptophan-22 in Escherichia coli dihydrofolate reductase by site-directed mutagenesis. Biochemistry (1991)
Release Date
1994-01-31
Peptides
DIHYDROFOLATE REDUCTASE:
A
B
SMTL:PDB
SMTL Chain Id:
PDB Chain Id:
A
A
B
B
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DIHYDROFOLATE REDUCTASE
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