Journal of Applied Spectroscopy

, Volume 76, Issue 4, pp 536–541 | Cite as

Study of the denaturation of human serum albumin by sodium dodecyl sulfate using the intrinsic fluorescence of albumin


An analysis of the intrinsic tryptophan fluorescence of human serum albumin (HSA) confirms that the denaturation of HSA by sodium dodecyl sulfate takes place in two stages for different pH levels: the first is the disintegration of globules and the second is the complete unfolding of the amino acid chain of HSA. At pH levels below the isoelectric point (pI 4.7) of HSA, denaturation proceeds through both stages, but when the pH is above pI, denaturation ceases in the first stage.

Key words

fluorescence tryptophan human serum albumin denaturation sodium dodecyl sulfate 


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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  1. 1.M. V. Lomonosov Moscow State UniversityMoscowRussia

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