Optimised expression and purification of recombinant human indoleamine 2,3-dioxygenase

Journal article


Austin, Christopher J. D., Mizdrak, Jasminka, Matin, Azadeh, Sirijovski, Nicholche, Kosim-Satyaputra, Priambudi, Willows, Robert D., Robert, Thomas H., Truscott, Roger J. W., Polekhina, Galina, Parker, Michael W. and Jamie, Joanne F.. (2004). Optimised expression and purification of recombinant human indoleamine 2,3-dioxygenase. Protein Expression and Purification. 37(2), pp. 392 - 398. https://doi.org/10.1016/j.pep.2004.06.025
AuthorsAustin, Christopher J. D., Mizdrak, Jasminka, Matin, Azadeh, Sirijovski, Nicholche, Kosim-Satyaputra, Priambudi, Willows, Robert D., Robert, Thomas H., Truscott, Roger J. W., Polekhina, Galina, Parker, Michael W. and Jamie, Joanne F.
Abstract

The hemoprotein indoleamine 2,3-dioxygenase (IDO) is the first and rate-limiting enzyme in mammalian tryptophan metabolism. It has received considerable attention in recent years, particularly due to its role in the pathogenesis of many diseases. Here, we report attempts to improve soluble expression and purification of hexahistidyl-tagged recombinant human IDO from Escherichia coli (EC538, pREP4, and pQE9-IDO). Significant formation of inclusion bodies was noted at the growth temperature of 37 °C, with reduced formation at 30 °C. The addition of the natural biosynthetic precursor of protoporphrin IX, δ-aminolevulinic acid (ALA), coupled with optimisation of IPTG induction levels during expression at 30 °C and purification by nickel–agarose and size exclusion chromatography, resulted in protein with 1 mol of heme/mol of protein and a specific activity of 160 μmol of kynurenine/h/mg of protein (both identical to native human IDO). The protein was homogeneous in terms of electrophoretic analysis. Yields of soluble protein (3–5 mg/L of bacterial culture) and heme content are greater than previously reported.

Year2004
JournalProtein Expression and Purification
Journal citation37 (2), pp. 392 - 398
PublisherAcademic Press Inc.
ISSN1046-5928
Digital Object Identifier (DOI)https://doi.org/10.1016/j.pep.2004.06.025
Scopus EID2-s2.0-4444307560
Page range392 - 398
Research GroupSchool of Behavioural and Health Sciences
Publisher's version
File Access Level
Controlled
Place of publicationUnited States of America
Permalink -

https://acuresearchbank.acu.edu.au/item/8605y/optimised-expression-and-purification-of-recombinant-human-indoleamine-2-3-dioxygenase

Restricted files

Publisher's version

  • 71
    total views
  • 0
    total downloads
  • 3
    views this month
  • 0
    downloads this month
These values are for the period from 19th October 2020, when this repository was created.

Export as