Methods for purification of bacterial cells and components

A method for the selective purification of bacterial cells or cell components, comprising the following steps:

• a) contacting a sample containing bacterial cells or cell components with isolated bacteriophage proteins;
• b) subsequent incubation of the sample of step a), containing the bacterial cells or cell components and the isolated bacteriophage proteins, with a solid support, wherein the solid support exhibits one or more different coupling group(s) on its surface binding the isolated bacteriophage proteins;
• and
• c) separating the solid support of step b) with the bacterial cells or cell components bound thereto via the isolated bacteriophage proteins from the sample.