chromatography column protein column A protein column is a chromatography column used for the separation of complex protein mixtures. Protein columns enable sample desalting, followed by chromatographic separation or fractionation of complex protein samples, e.g. immunodepleted serum or plasma proteins. GROUP:<http://msi-ontology.sourceforge.net> PERSON:Daniel Schober http://msi-ontology.sourceforge.net/ontology/CHROM.owl#msi_01238 protein column refactor as defined class