Fourier-Transform infrared spectroscopic investigation of the secondary structure of P <inf>2</inf> protein in deuterium oxide solution

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Journal Article
Australian Journal of Chemistry, 1991, 44 (11), pp. 1523 - 1531
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Fourier transform infrared (F.t.i.r.) spectroscopy has been used to investigate the secondary structure of bovine P2 protein in deuterium oxide (D2O) solution. The amide 1 region of the spectrum was analysed quantitatively by means of resolution enhancement and band-fitting procedures. The protein was found to consist mainly of β-structure (61%), with a small amount of α-helix (11%). A reason for the existence of an unusually intense low-frequency band assigned to β-structure is discussed. The F.t.i.r. results are compared with those from an X-ray crystallographic study and from circular dichroism and explanations are offered for discrepancies between the results from the different methods. © 1991 ASEG.
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