My name is Karol Zakrzewski and I finished my master studies in the Department of Analytical Biochemistry at Jagiellonian University. My scientific interests are connected with structural biochemistry, protein preparation, and analysis.  I have always been interested in the study of protein-protein interactions and solving protein structure. Now I have the opportunity to face many challenges in the Max Planck Laboratory in MCB and I am happy that I can develop my skills during my current work.