Chapter title |
Expression and Purification of the CMR (Type III-B) Complex in Sulfolobus solfataricus.
|
---|---|
Chapter number | 12 |
Book title |
CRISPR
|
Published in |
Methods in molecular biology, January 2015
|
DOI | 10.1007/978-1-4939-2687-9_12 |
Pubmed ID | |
Book ISBNs |
978-1-4939-2686-2, 978-1-4939-2687-9
|
Authors |
Zhang, Jing, White, Malcolm F, Jing Zhang, Malcolm F. White |
Editors |
Magnus Lundgren, Emmanuelle Charpentier, Peter C. Fineran |
Abstract |
Protein purification is an important technique that allows us to characterize the structural and biochemical properties of either an individual protein or a multi-protein complex. However, expression and purification of one subunit of a complex in the absence of its binding partners has often proven difficult to achieve due to the issues such as instability and mis-folding. This is the case for the components of the CRISPR-Cas interference complexes, which degrade invading nucleic acids in a sequence homology-dependent manner in many prokaryotic species. Here, we describe the expression of a tandem-tagged subunit of the Type III-B (CMR) complex in Sulfolobus solfataricus and subsequent isolation and purification of the whole complex by affinity purification of the tagged subunit. |
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