SMTL ID : 1asa.1

THE STRUCTURAL BASIS FOR THE REDUCED ACTIVITY OF THE Y226F(Y225F) ACTIVE SITE MUTANT OF E. COLI ASPARTATE AMINOTRANSFERASE

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.40 Å

Oligo State

homo-dimer

Ligands

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

PLP.1: 14 residues within 4Å: Chain A: G.102, G.103, T.104, W.130, N.183, D.211, A.213, Y.214, S.243, S.245, K.246, R.254 Chain B: Y.65 Ligands: MAE.2 12 PLIP interactions: 11 interactions with chain A, 1 interactions with chain B Hydrophobic interactions: A:K.246 Hydrogen bonds: A:G.103, A:T.104, A:T.104, A:N.183, A:S.243, A:S.245 Water bridges: A:R.254, B:Y.65 Salt bridges: A:R.254 pi-Stacking: A:W.130, A:W.130 PLP.3: 14 residues within 4Å: Chain A: Y.65 Chain B: G.102, G.103, T.104, W.130, N.183, D.211, A.213, Y.214, S.243, S.245, K.246, R.254 Ligands: MAE.4 14 PLIP interactions: 2 interactions with chain A, 12 interactions with chain B Hydrogen bonds: A:Y.65, B:G.103, B:T.104, B:N.183, B:Y.214, B:S.243, B:S.245, B:K.246 Water bridges: A:Y.65, B:R.254 Hydrophobic interactions: B:K.246 Salt bridges: B:R.254 pi-Stacking: B:W.130, B:W.130

2 x MAE: MALEIC ACID(Non-covalent)

MAE.2: 12 residues within 4Å: Chain A: I.13, I.33, G.34, W.130, N.183, K.246, F.348, R.374 Chain B: Y.65, R.280, S.284 Ligands: PLP.1 6 PLIP interactions: 3 interactions with chain A, 3 interactions with chain B Hydrogen bonds: A:G.34, B:S.284, B:S.284 Salt bridges: A:K.246, A:R.374, B:R.280 MAE.4: 12 residues within 4Å: Chain A: Y.65, R.280, S.284 Chain B: I.13, I.33, G.34, W.130, N.183, K.246, F.348, R.374 Ligands: PLP.3 6 PLIP interactions: 3 interactions with chain A, 3 interactions with chain B Hydrogen bonds: A:S.284, A:S.284, B:G.34 Salt bridges: A:R.280, B:K.246, B:R.374

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Schumacher, C. et al., The Structural Basis for the Reduced Activity of the Y226F(Y225F) Active Site Mutant of E. Coli Aspartate Aminotransferase. To be Published

Release Date

1994-04-30

Peptides

ASPARTATE AMINOTRANSFERASE: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
A

ASPARTATE AMINOTRANSFERASE

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