Abstract
When monochromatic light passes through a homogeneous absorbing medium, the absorbance is proportional to the growth of concentration and thickness of the medium, which is the Lambert—Beer law. The shade selection of protein solution magnetized for a certain time from different angles makes different absorbance, which does not meet the Lambert—Beer law. Accordingly, we derive that the absorbance is not only proportional to the concentration and thickness of the medium but also proportional to the light area of a certain direction. For the same protein solution, we can obtain the absorbance of six directions and thus get six values for , the relative ratio of which will inevitably reveal plentiful information of the protein shape. The conformation of the protein can be easily drawn out by software (MATLAB 7.0.1). We have drawn out the molecular shape of lysozyme and bovine serum albumin. In brief, we have developed the Lambert—Beer law and a new method of exploring protein spatial structure.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Haim Abitan, Henrik Bohr, and Preben Buchhave
Appl. Opt. 47(29) 5354-5357 (2008)
Bernard Lacaze
Appl. Opt. 48(14) 2702-2706 (2009)
W. G. Tam and A. Zardecki
Appl. Opt. 21(13) 2405-2412 (1982)