Nucleic acids exist in constant equilibrium between the most thermodynamically stable B-form and various non-canonical forms. Depending on the length, sequence, nucleobase modifications and plethora of biophysical parameters, the equilibrium shifts and so does DNA shift its "shape". My research concerns investigation of the shape-shifting extracellular DNA in various biofilms - multicellular communities encapsulated into shared biopolymeric matrix. Biofilms are everywhere, and my recent studies show that biofilms can create a crowded environment, in which biomolecular processes are happening outside bacterial cells (something we would not imagine being possible). Specifically, I am looking into a novel dimension of bacteria - bacteriophage interaction and its implication in the sustainable self-replication of electrocatalytic eDNA. Extracellular G-quadruplex GQ-DNA provides a particular example of what novel functions bacteria can get thanks to eDNA. GQ-DNA binds hemin and gain peroxidase DNAzyme as well as redox activity. My studies include a lot of bioimaging using immunolabelling and fluorescent probes.