The BAG consists out of 7 groups that are heavily involved in macromolecular crystallography, as well as other structural biology techniques, at Umeå University, Sweden. We work on a diverse set of biological questions, ranging from understanding the structure and function of Gram-positive Type 4 Secretion Systems, mobile genetic elements in Staphylococcus aureus, DNA and RNA polymerases, effector protein in Type 6 Secretion Systems and transcriptional regulators.