1 23 Extremophiles Microbial Life Under Extreme Conditions ISSN 1431-0651 Volume 17 Number 2 Extremophiles (2013) 17:217-227 DOI 10.1007/s00792-012-0508-2 Lipid storage in high-altitude Andean Lakes extremophiles and its mobilization under stress conditions in Rhodococcus sp. A5, a UV-resistant actinobacterium Susana Bequer Urbano, Virginia H. Albarracín, Omar F. Ordoñez, María E. Farías & Héctor M. Alvarez