5M49

Alpha-amino epsilon-caprolactam racemase in complex with PLP and D/L alpha amino epsilon-caprolactam (internal aldimine)

• PDB DOI: https://doi.org/10.2210/pdb5M49/pdb

• Classification: ISOMERASE
• Organism(s): Rhizobium freirei PRF 81
• Expression System: Escherichia coli
• 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: 1.51 Å
• R-Value Free: 0.195 
• R-Value Work: 0.161 
• R-Value Observed: 0.163 

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: 46.2 kDa 
• Atom Count: 3,394 
• Modelled Residue Count: 423 
• Deposited Residue Count: 436 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aminotransferase class-III	A	436	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 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PLP	B [auth A]	PYRIDOXAL-5'-PHOSPHATE C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N
7F4	D [auth A]	(3~{R})-3-azanylazepan-2-one C6 H12 N2 O BOWUOGIPSRVRSJ-RXMQYKEDSA-N
8F4	C [auth A]	(3~{S})-3-azanylazepan-2-one C6 H12 N2 O BOWUOGIPSRVRSJ-YFKPBYRVSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.51 Å
• R-Value Free: 0.195 
• R-Value Work: 0.161 
• R-Value Observed: 0.163 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 87.696	α = 90
b = 77.679	β = 112.68
c = 57.602	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: 2017-09-20
  Changes: Database references
• Version 1.2: 2024-01-17
  Changes: Data collection, Database references, Refinement description