1. Most mycolic acids also contain various functional groups. 2. Further, individuals with mutations in genes responsible for mycolic acid synthesis exhibit altered cording. 3. The non-reducing end of arabinogalactan is hydrophobicity of mycolic acids is a barrier to drug entry. 4. Mycolic acids are composed of a longer beta-hydroxy chain with a shorter alpha-alkyl side chain.5. :Mycolic acids are components of the cell wall of the bacterium Mycobacterium tuberculosis, the causative agent of tuberculosis. 6. Alpha-mycolic acids comprise at least 70 % of the mycolic acids present in the organism and contain several cyclopropane rings. 7. Alpha-mycolic acids comprise at least 70 % of the mycolic acids present in the organism and contain several cyclopropane rings. 8. The remaining 10 % to 15 % of the mycolic acids are keto-mycolic acids, which contain several ketone groups. 9. The remaining 10 % to 15 % of the mycolic acids are keto-mycolic acids , which contain several ketone groups. 10. In fact, they cover their cell bodies with mycolic acid , which makes them one of the hardest genera of bacteria to kill.