TY - JOUR AU - Aoki, Motohide AU - Tsuzuki, Mikio AU - Sato, Norihiro PY - 2012 DA - 2012/02/16 TI - Involvement of sulfoquinovosyl diacylglycerol in DNA synthesis in Synechocystis sp. PCC 6803 JO - BMC Research Notes SP - 98 VL - 5 IS - 1 AB - Sulfoquinovosyl diacylglycerol (SQDG) is present in the membranes of cyanobacteria and their postulated progeny, plastids, in plants. A cyanobacterium, Synechocystis sp. PCC 6803, requires SQDG for growth: its mutant (SD1) with the sqdB gene for SQDG synthesis disrupted can grow with external supplementation of SQDG. However, upon removal of SQDG from the medium, its growth is retarded, with a decrease in the cellular content of SQDG throughout cell division, and finally ceases. Concomitantly with the decrease in SQDG, the maximal activity of photosynthesis at high-light intensity is repressed by 40%. SN - 1756-0500 UR - https://doi.org/10.1186/1756-0500-5-98 DO - 10.1186/1756-0500-5-98 ID - Aoki2012 ER -