4ATQ

GABA-transaminase A1R958 in complex with external aldimine PLP-GABA adduct


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of a Gamma-Aminobutyrate (Gaba) Transaminase from the S-Triazine-Degrading Organism Arthrobacter Aurescens Tc1 in Complex with Plp and with its External Aldimine Plp- Gaba Adduct.

Bruce, H.Nguyen Tuan, A.Mangas Sanchez, J.Leese, C.Hopwood, J.Hyde, R.Hart, S.Turkenburg, J.P.Grogan, G.

(2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 1175

  • DOI: 10.1107/S1744309112030023
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Two complex structures of the γ-aminobutyrate (GABA) transaminase A1R958 from Arthrobacter aurescens TC1 are presented. The first, determined to a resolution of 2.80 Å, features the internal aldimine formed by reaction between the ℇ-amino group of Ly ...

    Two complex structures of the γ-aminobutyrate (GABA) transaminase A1R958 from Arthrobacter aurescens TC1 are presented. The first, determined to a resolution of 2.80 Å, features the internal aldimine formed by reaction between the ℇ-amino group of Lys295 and the cofactor pyridoxal phosphate (PLP); the second, determined to a resolution of 2.75 Å, features the external aldimine adduct formed between PLP and GABA in the first half-reaction. This is the first structure of a microbial GABA transaminase in complex with its natural external aldimine and reveals the molecular determinants of GABA binding in this enzyme.


    Organizational Affiliation

    York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5DD, England.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
4-AMINOBUTYRATE TRANSAMINASEA, B, C, D, E, F, G, H, I, J, K, L456Paenarthrobacter aurescens TC1Mutation(s): 0 
Gene Names: gabTAAur_3069
EC: 2.6.1.19
Find proteins for A1R958 (Paenarthrobacter aurescens (strain TC1))
Explore A1R958 
Go to UniProtKB:  A1R958
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLP
Query on PLP

Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L
PYRIDOXAL-5'-PHOSPHATE
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
 Ligand Interaction
ABU
Query on ABU

Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L
GAMMA-AMINO-BUTANOIC ACID
C4 H9 N O2
BTCSSZJGUNDROE-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 176.71α = 90
b = 292.83β = 90
c = 105.96γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-10
    Type: Initial release
  • Version 1.1: 2012-10-17
    Changes: Database references