Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
A simple way to measure protein refolding rates in water. / Otzen, Daniel E.; Oliveberg, Mikael.
In: Journal of Molecular Biology, Vol. 313, No. 3, 26.10.2001, p. 479-483.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
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TY - JOUR
T1 - A simple way to measure protein refolding rates in water
AU - Otzen, Daniel E.
AU - Oliveberg, Mikael
PY - 2001/10/26
Y1 - 2001/10/26
N2 - Refolding of proteins is traditionally carried out either by diluting the denaturant-unfolded protein into buffer (GdmCl-jump) or by mixing the acid-denatured protein with strong buffer (pH-jump). The first method does not allow direct measurement of folding rates in water since the GdmCl cannot be infinitely diluted, and the second method suffers from the limitation that many proteins cannot be pH-denatured. Further, some proteins do not refold reversibly from low pH where they get trapped as aggregation prone intermediates. Here, we present an alternative approach for direct measurement of refolding rates in water, which does not rely on extrapolation. The protein is denatured in SDS, and is then mixed with α-cyclodextrin, which rapidly strips SDS molecules from the protein, leaving the naked unfolded protein to refold.
AB - Refolding of proteins is traditionally carried out either by diluting the denaturant-unfolded protein into buffer (GdmCl-jump) or by mixing the acid-denatured protein with strong buffer (pH-jump). The first method does not allow direct measurement of folding rates in water since the GdmCl cannot be infinitely diluted, and the second method suffers from the limitation that many proteins cannot be pH-denatured. Further, some proteins do not refold reversibly from low pH where they get trapped as aggregation prone intermediates. Here, we present an alternative approach for direct measurement of refolding rates in water, which does not rely on extrapolation. The protein is denatured in SDS, and is then mixed with α-cyclodextrin, which rapidly strips SDS molecules from the protein, leaving the naked unfolded protein to refold.
KW - Chevron plots
KW - Cyclodextrin
KW - Protein folding
KW - SDS
KW - Stopped-flow
UR - http://www.scopus.com/inward/record.url?scp=0035955556&partnerID=8YFLogxK
U2 - 10.1006/jmbi.2001.5039
DO - 10.1006/jmbi.2001.5039
M3 - Journal article
C2 - 11676533
AN - SCOPUS:0035955556
VL - 313
SP - 479
EP - 483
JO - Journal of Molecular Biology
JF - Journal of Molecular Biology
SN - 0022-2836
IS - 3
ER -