GLUL and infection: Here, we provide evidences of mannosylation for the first time for at least six of these “essential” proteins involved in the host pathogen-interaction: the Rv0227c (involved in the invasion and infection of Mtb target cells [78]), the HtrA-like serine protease Rv1223 [79], the Sec-independent protein translocase TatA (Rv2094c [80]), the Glutamine synthetase GlnA1 involved in the DCs maturation and activation (Rv2220; [81]) and the disulfide oxidase DsbA-like enzyme Rv2969c involved the formation of protein disulfide bonds essential for the protein folding [82]).