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 

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 68: 1175

  • DOI: 10.1107/S1744309112030023
  • Primary Citation of Related Structures:  4ATP

  • 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 TRANSAMINASE
A, B, C, D, E, F, G, H, I, J, K, L
456Arthrobacter aurescens (strain TC1)Gene Names: gabT
EC: 2.6.1.19
Find proteins for A1R958 (Arthrobacter aurescens (strain TC1))
Go to UniProtKB:  A1R958
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ABU
Query on ABU

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L
GAMMA-AMINO-BUTANOIC ACID
GAMMA(AMINO)-BUTYRIC ACID
C4 H9 N O2
BTCSSZJGUNDROE-UHFFFAOYSA-N
 Ligand Interaction
PLP
Query on PLP

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L
PYRIDOXAL-5'-PHOSPHATE
VITAMIN B6 Phosphate
C8 H10 N O6 P
NGVDGCNFYWLIFO-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 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 176.710α = 90.00
b = 292.830β = 90.00
c = 105.960γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
xia2data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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