Abstract:
:Elastin-like polypeptides (ELPs) undergo a reversible, inverse phase transition. Below their transition temperature (Tt), ELPs are soluble in water, but when the temperature is raised above Tt, phase transition occurs, leading to aggregation of the polypeptide. We demonstrate a method for purification of soluble fusion proteins incorporating an ELP tag. Advantages of this method, termed "inverse transition cycling," include technical simplicity, low cost, ease of scale-up, and capacity for multiplexing. More broadly, the ability to environmentally modulate the physicochemical properties of recombinant proteins by fusion with ELPs will allow diverse applications in bioseparation, immunoassays, biocatalysis, and drug delivery.
journal_name
Nat Biotechnoljournal_title
Nature biotechnologyauthors
Meyer DE,Chilkoti Adoi
10.1038/15100subject
Has Abstractpub_date
1999-11-01 00:00:00pages
1112-5issue
11eissn
1087-0156issn
1546-1696journal_volume
17pub_type
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