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Updated: Jun 29, 2026

High-throughput Purification of Affinity-tagged Recombinant Proteins
Published on: August 26, 2012
Methods for the purification of HQ-tagged proteins
Becky Godat1, Laurie Engel, Natalie A Betz
1Proteomics R&D, Promega Corporation, Fitchburg, WI, USA.
Abstract:
The HQ (H = histidine, Q = glutamine) tag is a small fusion tag that can be isolated using immobilized metal affinity columns. HQ-tagged proteins can be expressed and purified from bacterial cells under native and denaturing conditions, mammalian cells, insect cells, wheat germ and rabbit reticulocyte. Furthermore, HQ-tagged proteins can be purified using magnetic or non-magnetic resins in multiple formats from small to large-scale and manual or automated. In this chapter, we have described various protocols for the purification of HQ-tagged proteins.
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