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Updated: Aug 25, 2026

Single-Step Enrichment of a TAP-Tagged Histone Deacetylase of the Filamentous Fungus Aspergillus nidulans for Enzymatic Activity Assay
Published on: May 1, 2019
Three-phase partitioning for simultaneous renaturation and partial purification of Aspergillus niger xylanase
Ipsita Roy1, Aparna Sharma, Munishwar Nath Gupta
1Chemistry Department, Indian Institute of Technology, Hauz Khas, New Delhi, 110016, India.
Abstract:
Three-phase partitioning (TPP) is carried out by mixing ammonium sulfate and t-butanol to obtain organic phase, interfacial precipitate and aqueous phase. It is shown that TPP of an 8 M urea/100 mM dithiothreitol-denatured xylanase preparation resulted in simultaneous renaturation and purification. This integrated novel approach gave recovery of 93% enzyme activity with 21-fold purification. The implications of this in the context of recovering activity from inclusion bodies are discussed.
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