SMTL ID : 1h9k.1

Two crystal structures of the cytoplasmic molybdate-binding protein ModG suggest a novel cooperative binding mechanism and provide insights into ligand-binding specificity. Phosphate-grown form with tungstate and phosphate bound

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.80 Å

Oligo State

homo-trimer

Ligands

6 x WO4: TUNGSTATE(VI)ION(Non-covalent)

WO4.1: 8 residues within 4Å: Chain A: N.97 Chain B: N.97 Chain C: G.94, A.95, V.96, N.97 Ligands: WO4.5, WO4.9 6 PLIP interactions: 1 interactions with chain A, 4 interactions with chain C, 1 interactions with chain B Hydrogen bonds: A:N.97, C:A.95, C:V.96, C:N.97, C:N.97, B:N.97 WO4.2: 9 residues within 4Å: Chain A: V.114, T.115, A.118 Chain B: S.7, A.8, R.9, K.63, A.64, P.65 6 PLIP interactions: 2 interactions with chain A, 4 interactions with chain B Hydrogen bonds: A:T.115, A:T.115, B:R.9, B:K.63, B:K.63, B:A.64 WO4.5: 8 residues within 4Å: Chain A: G.94, A.95, V.96, N.97 Chain B: N.97 Chain C: N.97 Ligands: WO4.1, WO4.9 6 PLIP interactions: 4 interactions with chain A, 1 interactions with chain B, 1 interactions with chain C Hydrogen bonds: A:A.95, A:V.96, A:N.97, A:N.97, B:N.97, C:N.97 WO4.6: 9 residues within 4Å: Chain B: V.114, T.115, A.118 Chain C: S.7, A.8, R.9, K.63, A.64, P.65 6 PLIP interactions: 4 interactions with chain C, 2 interactions with chain B Hydrogen bonds: C:R.9, C:K.63, C:K.63, C:A.64, B:T.115, B:T.115 WO4.9: 8 residues within 4Å: Chain A: N.97 Chain B: G.94, A.95, V.96, N.97 Chain C: N.97 Ligands: WO4.1, WO4.5 6 PLIP interactions: 1 interactions with chain A, 4 interactions with chain B, 1 interactions with chain C Hydrogen bonds: A:N.97, B:A.95, B:V.96, B:N.97, B:N.97, C:N.97 WO4.10: 9 residues within 4Å: Chain A: S.7, A.8, R.9, K.63, A.64, P.65 Chain C: V.114, T.115, A.118 6 PLIP interactions: 2 interactions with chain C, 4 interactions with chain A Hydrogen bonds: C:T.115, C:T.115, A:R.9, A:K.63, A:K.63, A:A.64

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

PO4.3: 8 residues within 4Å: Chain A: S.79, A.80, R.81, K.135, A.136, S.137 Chain B: T.43 Ligands: PO4.4 7 PLIP interactions: 1 interactions with chain B, 6 interactions with chain A Water bridges: B:S.46, A:S.79 Hydrogen bonds: A:R.81, A:A.136, A:S.137, A:S.137 Salt bridges: A:K.135 PO4.4: 7 residues within 4Å: Chain A: K.135, S.137 Chain B: N.25, V.41, V.42, T.43 Ligands: PO4.3 5 PLIP interactions: 2 interactions with chain A, 3 interactions with chain B Hydrogen bonds: A:S.137, B:T.43, B:S.137 Salt bridges: A:K.135 Water bridges: B:T.43 PO4.7: 8 residues within 4Å: Chain B: S.79, A.80, R.81, K.135, A.136, S.137 Chain C: T.43 Ligands: PO4.8 7 PLIP interactions: 1 interactions with chain C, 6 interactions with chain B Water bridges: C:S.46, B:S.79 Hydrogen bonds: B:R.81, B:A.136, B:S.137, B:S.137 Salt bridges: B:K.135 PO4.8: 7 residues within 4Å: Chain B: K.135, S.137 Chain C: N.25, V.41, V.42, T.43 Ligands: PO4.7 5 PLIP interactions: 3 interactions with chain C, 2 interactions with chain B Hydrogen bonds: C:T.43, C:S.137, B:S.137 Water bridges: C:T.43 Salt bridges: B:K.135 PO4.11: 8 residues within 4Å: Chain A: T.43 Chain C: S.79, A.80, R.81, K.135, A.136, S.137 Ligands: PO4.12 7 PLIP interactions: 2 interactions with chain A, 5 interactions with chain C Water bridges: A:T.43, A:S.46 Hydrogen bonds: C:R.81, C:A.136, C:S.137, C:S.137 Salt bridges: C:K.135 PO4.12: 7 residues within 4Å: Chain A: N.25, V.41, V.42, T.43 Chain C: K.135, S.137 Ligands: PO4.11 5 PLIP interactions: 2 interactions with chain C, 3 interactions with chain A Hydrogen bonds: C:S.137, A:T.43, A:S.137 Salt bridges: C:K.135 Water bridges: A:T.43

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Delarbre, L. et al., Two Crystal Structures of the Cytoplasmic Molybdate-Binding Protein Modg Suggest a Novel Cooperative Binding Mechanism and Provide Insights Into Ligand-Binding Specificity. J.Mol.Biol. (2001)

Release Date

2001-05-11

Peptides

MOLYBDENUM-BINDING-PROTEIN: ABC

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
A

C
A

MOLYBDENUM-BINDING-PROTEIN

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