Abstract
The fluorescence emission wavelength of α-chymotrypsin (CT) correlated with its enantioselectivity (E value) for the resolution of dl-tyrosine ethyl ester. The changes in the E value of the CT due to the changes in the solvent composition were closely related to its fluorescence properties (Δλem), which were most probably associated with the structural modification of the enzyme. A linear relationship was established between E value and Δλem in aqueous acetonitrile with high correlation coefficients (r=0.94).
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References
Birktoft JJ, Blow DM (1972) Structure of crystalline α-chymotrypsin. V. The atomic structure of tosyl-α-chymotrypsin at 2 Å resolution. J. Mol. Biol. 68: 187-240.
Broos J, Visser AJWG, Engbersen JFJ, Verboom W, van Hoek A, Reinhoudt DN (1995) Flexibility of enzymes suspended in organic solvents probed by time-resolved fluorescence anisotropy. Evidence that enzyme activity and enantioselectivity are directly related to enzyme flexibility. J. Am. Chem. Soc. 117: 12657-12663.
Burstein EA, Vedenkina NS, lvkova MN (1973) Fluorescence and the location of tryptophan residues in protein molecules. Photochem. Photobiol. 18: 263-279.
Chen CS, Sih CJ (1989) General aspects and optimization of enantioselective biocatalysis in organic solvents: the use of lipases. Angew. Chem., Int. Ed. Engl. 28: 695-707.
Desie G, Boens N, De Schryver FC (1986) Study of the timeresolved tryptophan fluorescence of crystalline α-chymotrypsin. Biochemistry 25: 8301-8308.
Kijima T, Yamamoto S, Kise H (1994) Fluorescence spectroscopic study of subtilisins as relevant to their catalytic activity in aqueous-organic media. Bull. Chem. Soc. Jpn. 67: 2819-2824.
Kijima T, Yamamoto S, Kise H (1996) Study on tryptophan fluorescence and catalytic activity of α-chymotrypsin in aqueous-organic media. Enzyme Microb. Technol. 18: 2-6.
Kise H, Hayakawa A, Noritomi H (1990) Protease-catalyzed synthetic reactions and immobilization-activation of the enzymes in hydrophilic organic solvents. J. Biotechnol. 14: 239-254.
Reslow M, Adlercreutz P, Mattiasson B (1988) The influence of water on protease-catalyzed peptide synthesis in acetonitrile/water mixtures. Eur. J. Biochem. 177: 313-318.
Teale FWJ (1960) The ultraviolet fluorescence of proteins in neutral solutions. Biochem. J. 76: 381-388.
Tsukuda H, Blow DM (1985) Structure of α-chymotrypsin refined at 1.68 Å resolution. J. Mol. Biol. 184: 703-711.
Vulfson EN, Halling PJ, Holland HL, eds. (2001) Enzymes in Non-aqueous Solvents. Part II. Synthetic Applications. Totowa: Humana Press, pp. 241-422.
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Kijima, T., Izumi, T. Fluorescence spectroscopic study of α-chymotrypsin relevant to the enantioselectivity for optical resolution of amino acid esters in organic solvents. Biotechnology Letters 26, 655–658 (2004). https://doi.org/10.1023/B:BILE.0000023025.35516.12
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DOI: https://doi.org/10.1023/B:BILE.0000023025.35516.12