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Heme CD as a probe for monitoring local structural changes in hemeproteins: Alkaline transition in hemeproteins
Tapan K Das Shyamalava Mazumdar Samaresh Mitra
Volume 107 Issue 4 August 1995 pp 497-503
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https://www.ias.ac.in/article/fulltext/jcsc/107/04/0497-0503 -
Keywords
Hemeproteins ;circular dichroism ;alkaline transition ;cytochrome c ;horseradish peroxidase -
Abstract
Structural change due to acid-alkaline transition in hemeproteins were monitored by circular dichroism measurements in the Soret region. It was observed that in cytochrome c and horseradish peroxidase, alkaline transition results in a large change in the heme CD due to significant conformational change in the heme cavity region. In metmyoglobin a simple protolytic mechanism associated with alkaline transition involves very small conformational changes.
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Author Affiliations
Tapan K Das1 Shyamalava Mazumdar1 Samaresh Mitra1
- Chemical Physics Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Navynagar, Bombay - 400005, India
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Dates
- Published
- August 1995
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Journal of Chemical Sciences
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