SMTL ID : 1aam.1

THE STRUCTURAL BASIS FOR THE ALTERED SUBSTRATE SPECIFICITY OF THE R292D ACTIVE SITE MUTANT OF ASPARTATE AMINOTRANSFERASE FROM E. COLI

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.80 Å

Oligo State

homo-dimer

Ligands

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

SO4.1: 6 residues within 4Å: Chain A: G.34, W.130, N.183, Y.214, F.348 Ligands: PLP.2 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:N.183, A:Y.214, A:Y.214 Salt bridges: A:K.246 SO4.3: 6 residues within 4Å: Chain B: G.34, W.130, N.183, Y.214, F.348 Ligands: PLP.4 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:N.183, B:Y.214, B:Y.214 Salt bridges: B:K.246

2 x PLP: PYRIDOXAL-5'-PHOSPHATE(Covalent)

PLP.2: 14 residues within 4Å: Chain A: G.102, G.103, T.104, W.130, H.178, N.183, D.211, Y.214, S.243, S.245, K.246, R.254 Chain B: Y.65 Ligands: SO4.1 9 PLIP interactions: 8 interactions with chain A, 1 interactions with chain B Hydrophobic interactions: A:W.130, A:W.130 Hydrogen bonds: A:T.104, A:N.183, A:S.243, A:S.245, B:Y.65 Salt bridges: A:K.246, A:R.254 PLP.4: 14 residues within 4Å: Chain A: Y.65 Chain B: G.102, G.103, T.104, W.130, H.178, N.183, D.211, Y.214, S.243, S.245, K.246, R.254 Ligands: SO4.3 12 PLIP interactions: 10 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:W.130, B:W.130 Hydrogen bonds: B:T.104, B:N.183, B:Y.214, B:S.243, B:S.245, B:K.246, A:Y.65, A:Y.65 Salt bridges: B:K.246, B:R.254

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Almo, S.C. et al., The structural basis for the altered substrate specificity of the R292D active site mutant of aspartate aminotransferase from E. coli. Protein Eng. (1994)

Release Date

1993-10-31

Peptides

ASPARTATE AMINOTRANSFERASE: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
A

ASPARTATE AMINOTRANSFERASE