*3.2. Genomic DNA and RNA Isolation*

Genomic DNA was extracted using a modified cetyltrimethylammonium bromide (CTAB) method [33]. The total RNA was isolated from *C. protothecoides* CS-41 cells at the late log phase (about 5-day incubation, with a cell density around 1 × 108 cells mLƺ1) using TRIzol® reagent (Invitrogen, Carlsbad, CA, USA) according to the manufacturer's instructions. 
