- The crystal structure of Rv1347c, a putative antibiotic resistance protein from Mycobacterium tuberculosis, reveals a GCN5-related fold and suggests an alternative function in siderophore biosynthesis. Card, G.L., Peterson, N.A., Smith, C.A., Rupp, B., Schick, B.M., Baker, E.N. J. Biol. Chem. (2005)