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Thermal unfolding o...
Thermal unfolding of the archaeal DNA and RNA binding protein Ssh10
- Artikel/kapitelEngelska2008
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Elsevier BV,2008
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Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:sh-29045
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https://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-29045URI
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https://doi.org/10.1016/j.bbrc.2008.06.030DOI
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http://kipublications.ki.se/Default.aspx?queryparsed=id:117420996URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Wu, Xiaoqiu Oppermann, Madalina Berndt, Kurt D Bergman, Tomas Jornvall, Hans Knapp, Stefan Oppermann, Udo Research Support, Non-U.S. Gov't United States Biochemical and biophysical research communications Biochem Biophys Res Commun. 2008 Sep 5;373(4):482-7. Epub 2008 Jun 20.
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The reversible thermal unfolding of the archaeal histone-like protein Ssh10b from the extremophile Sulfolobus shibatae was studied using differential scanning calorimetry and circular dichroism spectroscopy. Analytical ultracentrifugation and gel filtration showed that Ssh10b is a stable dimer in the pH range 2.5-7.0. Thermal denaturation data fit into a two-state unfolding model, suggesting that the Ssh10 dimer unfolds as a single cooperative unit with a maximal melting temperature of 99.9 degrees C and an enthalpy change of 134 kcal/mol at pH 7.0. The heat capacity change upon unfolding determined from linear fits of the temperature dependence of DeltaH(cal) is 2.55 kcal/(mol K). The low specific heat capacity change of 13 cal/(mol K residue) leads to a considerable flattening of the protein stability curve (DeltaG (T)) and results in a maximal DeltaG of only 9.5 kcal/mol at 320 K and a DeltaG of only 6.0 kcal/mol at the optimal growth temperature of Sulfolobus.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Oppermann, M
(författare)
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Berndt, Kurt DKarolinska Institutet(Swepub:sh)SHKTBT
(författare)
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Bergman, TKarolinska Institutet
(författare)
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Jörnvall, HKarolinska Institutet
(författare)
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Knapp, S
(författare)
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Oppermann, U
(författare)
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Karolinska Institutet
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Biochemical and Biophysical Research Communications - BBRC: Elsevier BV373:4, s. 482-4870006-291X1090-2104
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