Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 75.60 kDa 
• Atom Count: 7037 
• Modelled Residue Count: 639 
• Deposited Residue Count: 664 
• Unique protein chains: 1

4CHI

(R)-selective amine transaminase from Aspergillus fumigatus at 1.27 A resolution

• DOI: 10.2210/pdb4CHI/pdb

• Classification: TRANSFERASE
• Organism(s): Aspergillus fumigatus Af293
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-12-02 Released: 2014-04-30 
• Deposition Author(s): Thomsen, M., Palm, G.J., Hinrichs, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.27 Å
• R-Value Free: 0.127 
• R-Value Work: 0.103 
• R-Value Observed: 0.104 

Literature

Crystallographic Characterization of the (R)-Selective Amine Transaminase from Aspergillus Fumigatus.

Thomsen, M., Skalden, L., Palm, G.J., Hohne, M., Bornscheuer, U.T., Hinrichs, W.

(2014) Acta Crystallogr D Biol Crystallogr 70: 1086

• PubMed: 24699652 
• DOI: 10.1107/S1399004714001084
• Primary Citation of Related Structures:  
  4CHI


• PubMed Abstract: 
  

The importance of amine transaminases for producing optically pure chiral precursors for pharmaceuticals and chemicals has substantially increased in recent years. The X-ray crystal structure of the (R)-selective amine transaminase from the fungus Aspergillus fumigatus was solved by S-SAD phasing to 1.84 Å resolution. The refined structure at 1.27 Å resolution provides detailed knowledge about the molecular basis of substrate recognition and conversion to facilitate protein-engineering approaches. The protein forms a homodimer and belongs to fold class IV of the pyridoxal-5'-phosphate-dependent enzymes. Both subunits contribute residues to form two active sites. The structure of the holoenzyme shows the catalytically important cofactor pyridoxal-5'-phosphate bound as an internal aldimine with the catalytically responsible amino-acid residue Lys179, as well as in its free form. A long N-terminal helix is an important feature for the stability of this fungal (R)-selective amine transaminase, but is missing in branched-chain amino-acid aminotransferases and D-amino-acid aminotransferases.

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Related Citations: 

• Crystallization and Preliminary X-Ray Diffraction Studies of the (R)-Selective Amine Transaminase from Aspergillus Fumigatus
  Thomsen, M., Skalden, L., Palm, G.J., Hoehne, M., Bornscheuer, U.T., Hinrichs, W.
  (2013) Acta Crystallogr Sect F Struct Biol Cryst Commun 69: 1415

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Organizational Affiliation: 

Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Strasse 4, 17489 Greifswald, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BRANCHED-CHAIN AMINO ACID AMINOTRANSFERASE	A, B	332	Aspergillus fumigatus Af293	Mutation(s): 0  Gene Names: AFUA_7G06900 EC: 2.6.1 (PDB Primary Data), 2.6.1.18 (PDB Primary Data)
Find proteins for Q4WH08 (Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100)) Explore Q4WH08  Go to UniProtKB:  Q4WH08

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PLP	C [auth A], K [auth B]	PYRIDOXAL-5'-PHOSPHATE C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N
PO4	D [auth A], L [auth B]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
GOL	E [auth A], M [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
K	G [auth A], H [auth A], O [auth B], P [auth B]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N
CL	I [auth A], J [auth A], Q [auth B], R [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA	F [auth A], N [auth B]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.27 Å
• R-Value Free: 0.127 
• R-Value Work: 0.103 
• R-Value Observed: 0.104 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 102.367	α = 90
b = 120.935	β = 90
c = 135.464	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
SHELXCDE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-12-02 
• Released Date: 2014-04-30 
Deposition Author(s): Thomsen, M., Palm, G.J., Hinrichs, W.

Revision History  

• Version 1.0: 2014-04-30
  Type: Initial release
  
• Version 1.1: 2017-10-18
  Changes: Data collection