VIB Structural Biology Research Center (SBRC), Brussels, Belgium. mvaradi@vub.ac.be.|VIB Structural Biology Research Center (SBRC), Brussels, Belgium. mainak.guharoy@vib-vub.be.|Vrije Universiteit Brussel, Brussels, Belgium. fzsolyom@vub.ac.be.|VIB Structural Biology Research Center (SBRC), Brussels, Belgium. ptompa@vub.ac.be.