SMTL ID : 1zt9.1 (4 other biounits)

E. coli trp repressor, tetragonal crystal form

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.00 Å

Oligo State

homo-dimer

Ligands

4 x SO4: SULFATE ION(Non-functional Binders)

SO4.1: 4 residues within 4Å: Chain A: R.53, T.80, R.83 Ligands: TRP.6 5 PLIP interactions: 4 interactions with chain A, 1 Ligand-Ligand interactions Water bridges: A:R.53, A:T.80 Salt bridges: A:R.53, A:R.83 Hydrogen bonds: W.6 SO4.2: 2 residues within 4Å: Chain A: S.66, Q.67 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:Q.67 SO4.4: 4 residues within 4Å: Chain B: R.53, T.80, R.83 Ligands: TRP.3 9 PLIP interactions: 8 interactions with chain B, 1 Ligand-Ligand interactions Hydrogen bonds: B:T.80, W.3 Water bridges: B:R.53, B:R.53, B:R.53, B:R.53, B:T.80 Salt bridges: B:R.53, B:R.83 SO4.5: 2 residues within 4Å: Chain B: S.66, Q.67 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:Q.67

2 x TRP: TRYPTOPHAN(Non-covalent)

TRP.3: 12 residues within 4Å: Chain A: N.39, L.40, L.42, T.43, P.44 Chain B: R.53, I.56, T.80, R.83, G.84, S.87 Ligands: SO4.4 10 PLIP interactions: 4 interactions with chain A, 5 interactions with chain B, 1 Ligand-Ligand interactions Hydrophobic interactions: A:T.43, B:R.53, B:I.56 Hydrogen bonds: A:L.40, B:T.80, B:S.87 Water bridges: A:R.47, A:R.47, W.3 pi-Cation interactions: B:R.53 TRP.6: 12 residues within 4Å: Chain A: R.53, I.56, T.80, R.83, G.84, S.87 Chain B: N.39, L.40, L.42, T.43, P.44 Ligands: SO4.1 11 PLIP interactions: 4 interactions with chain B, 6 interactions with chain A, 1 Ligand-Ligand interactions Hydrophobic interactions: B:T.43, A:R.53, A:R.53, A:I.56 Hydrogen bonds: B:L.40, A:T.80, A:S.87 Water bridges: B:R.47, B:R.47, W.6 pi-Cation interactions: A:R.53

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Lawson, C.L. et al., Two association modes for E. coli trp repressor dimer-dimer interactions. To be Published

Release Date

2006-05-09

Peptides

Trp operon repressor: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Trp operon repressor

Related Entries With Identical Sequence