SMTL ID : 6rl5.1 (1 other biounit)

The first crystal structure of the DABA aminotransferase EctB in the ectoine biosynthesis pathway of the model organism Chromohalobacter salexigens DSM 3034

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.45 Å

Oligo State

homo-tetramer

Ligands

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

PLP.1: 13 residues within 4Å: Chain A: T.110, G.111, T.112, F.138, H.139, G.140, E.205, D.238, I.240, Q.241, K.267 Chain B: G.295, T.296 10 PLIP interactions: 8 interactions with chain A, 2 interactions with chain B Hydrophobic interactions: A:E.205, A:I.240, A:I.240, A:K.267 Hydrogen bonds: A:G.111, A:T.112, B:T.296, B:T.296 Salt bridges: A:K.267 pi-Stacking: A:F.138 PLP.2: 12 residues within 4Å: Chain A: G.295, T.296 Chain B: T.110, G.111, T.112, F.138, H.139, E.205, D.238, I.240, Q.241, K.267 11 PLIP interactions: 8 interactions with chain B, 3 interactions with chain A Hydrophobic interactions: B:F.138, B:I.240, B:I.240, B:K.267 Hydrogen bonds: B:G.111, B:T.112, B:Q.241, A:T.296, A:T.296 Salt bridges: B:K.267 Water bridges: A:N.294 PLP.3: 14 residues within 4Å: Chain C: T.110, G.111, T.112, F.138, H.139, G.140, E.205, D.238, I.240, Q.241, S.266, K.267 Chain D: G.295, T.296 13 PLIP interactions: 10 interactions with chain C, 3 interactions with chain D Hydrophobic interactions: C:I.240, C:I.240, C:K.267 Hydrogen bonds: C:G.111, C:T.112, C:T.112, C:Q.241, C:S.266, D:T.296, D:T.296, D:T.296 Salt bridges: C:K.267 pi-Stacking: C:F.138 PLP.4: 12 residues within 4Å: Chain C: G.295, T.296 Chain D: T.110, G.111, T.112, F.138, H.139, E.205, D.238, I.240, Q.241, K.267 13 PLIP interactions: 9 interactions with chain D, 4 interactions with chain C Hydrophobic interactions: D:F.138, D:I.240, D:I.240, D:K.267 Hydrogen bonds: D:G.111, D:T.112, D:T.112, C:T.296, C:T.296 Salt bridges: D:K.267 pi-Stacking: D:F.138 Water bridges: C:G.295, C:G.295

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Hillier, H.T. et al., The crystal structure of the tetrameric DABA-aminotransferase EctB, a rate-limiting enzyme in the ectoine biosynthesis pathway. Febs J. (2020)

Release Date

2020-03-11

Peptides

Diaminobutyrate--2-oxoglutarate transaminase: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

Diaminobutyrate--2-oxoglutarate transaminase

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