5M46 | pdb_00005m46

Alpha-amino epsilon-caprolactam racemase (ACLR) from Rhizobacterium freirei

• PDB DOI: https://doi.org/10.2210/pdb5M46/pdb

• Classification: ISOMERASE
• Organism(s): Rhizobium freirei PRF 81
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2016-10-18 Released: 2017-04-19 
• Deposition Author(s): Frese, A., Sutton, P.W., Turkenburg, J.P., Grogan, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.62 Å
• R-Value Free: 
  0.180 (Depositor), 0.190 (DCC) 
• R-Value Work: 
  0.147 (Depositor), 0.160 (DCC) 
• R-Value Observed: 
  0.149 (Depositor) 

Starting Model: experimental

Literature

Snapshots of the Catalytic Cycle of the Industrial Enzyme alpha-Amino-epsilon-Caprolactam Racemase (ACLR) Observed Using X-ray Crystallography

Frese, A., Sutton, P.W., Turkenburg, J.P., Grogan, G.

(2017) ACS Catal 7: 1045-1048

• DOI: https://doi.org/10.1021/acscatal.6b03056

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 46.6 kDa 
• Atom Count: 3,383 
• Modeled Residue Count: 429 
• Deposited Residue Count: 440 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aminotransferase class-III	A	440	Rhizobium freirei PRF 81	Mutation(s): 0  Gene Names: RHSP_08934
UniProt
Find proteins for N6UXY4 (Rhizobium freirei PRF 81) Explore N6UXY4  Go to UniProtKB:  N6UXY4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PLP	B [auth A]	PYRIDOXAL-5'-PHOSPHATE C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N
EDO	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.62 Å
• R-Value Free:  0.180 (Depositor), 0.190 (DCC) 
• R-Value Work:  0.147 (Depositor), 0.160 (DCC) 
• R-Value Observed: 0.149 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 87.613	α = 90
b = 76.527	β = 113.12
c = 58.57	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-04-19 
Deposition Author(s): Frese, A., Sutton, P.W., Turkenburg, J.P., Grogan, G.

Revision History  

• Version 1.0: 2017-04-19
  Type: Initial release
  
• Version 1.1: 2024-01-17
  Changes: Data collection, Database references, Refinement description