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Table 4 Overview of investigated purification and immobilization methods for both enzymes and comparison to other works

From: Toward a cell-free hydantoinase process: screening for expression optimization and one-step purification as well as immobilization of hydantoinase and carbamoylase

 

Via

Enzyme

Recovery (%)

Purification fold

References

Ni Sepharose purification

Ni Sepharose beads

Hyd

11.2

23.7

This study

IMAC chromatography

Hyd

16.6

22.6

Xu et al. (2003)

Ni Sepharose beads

Carb

67.5

50.9

This study

IMAC chromatography

Carb

70.0

Chen et al. (2003)

Functionalized magnetic bead purification

Functionalized magnetic beads

Hyd

11.9

35.9

This study

IMAMa

Hyd

3.5

6.8

Ko et al. (2011)

Functionalized magnetic beads

Carb

32.5

126.6

This study

IMAC chromatography

Carb

55.0

11.3

Pietzsch et al. (2000)

  1. Values for the hydantoinase and carbamoylase determined in this work (italics) compared to values reported in literature using other hydantoinases and carbamoylases (regular). Ni Sepharose purification: elution 1 + elution 2
  2. aImmobilized metal ion affinity membrane