From DrugPedia: A Wikipedia for Drug discovery
The cell wall consists of several layers (from outer, see picture right):
1. Phthiocerol Dimycocerosates (DIM)
2. Mycolic acids
3. Arabinogalactan
4. Peptidoglycan
5. Plasma membrane (?)
6. Lipoarabinomannan
7. Phosphatidylinositol Mannoside