Analytical methods

You can consult these sites about the three analytical methods mostly used for analysing the sample - Mass spectroscopy, IR - and NMR - spectroscopy:
http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/spectro.htm
http://orgchem.colorado.edu/hndbksupport/ochemlabtech.html

http://www.chemguide.co.uk/analysismenu.html#top

http://www.rod.beavon.clara.net/spectra.htm

http://www.chem.ucalgary.ca/courses/351/Carey/Ch13/ch13-0.html
Look at this site to see how a mixture of proteins is separated by Affinity chromatography:

http://www.bio.davidson.edu/courses/genomics/method/Affinity.html

Using the HPLC chromatography:

http://www.youtube.com/watch?v=kz_egMtdnL4&list=PLnu__ug2a65zD8fzKPq9uePcFGCtb3Cxl