Membrane lipid composition of the unusual cyanobacterium Gloeobacter violaceus sp. PCC 7421, which lacks sulfoquinovosyl diacylglycerol |
| |
Authors: | E Selstam Douglas Campbell |
| |
Institution: | Department of Plant Physiology, University of Ume?, S-90187 Ume?, Sweden Tel. +46-9016-5289; Fax +46-9016-6676 e-mail: eva.selstam@plantphys.umu.se, SE
|
| |
Abstract: | Gloeobacter violaceus sp. PCC 7421 is an unusual cyanobacterium with only one cellular membrane, which lacks the thylakoid membranes found in other
oxygenic photosynthetic organisms. The cell membrane lipids in G. violaceus sp. PCC 7421 are monogalactosyl diacylglycerol, digalactosyl diacylglycerol, phosphatidyl glycerol and phosphatidic acid
in the molar proportion of 51, 24, 18 and 4% respectively. This lipid composition resembles that of the cell membrane from
other cyanobacteria, but completely lacks sulfoquinovosyl diacylglycerol. This lack of sulfoquinovosyl diacylglycerol is exceptional
for a photosynthetic membrane. The membrane lipids are esterified to 14:0, 16:0, 16:1, 18:0, 18:1, 18:2 and α18:3 fatty acids.
Received: 28 December 1995 / Accepted: 26 April 1996 |
| |
Keywords: | Cyanobacteria Fatty acid Gloeobacter violaceus sp PCC 7421 Lipid Membrane Thylakoid Photosynthesis Sulfoquinovosyl diacylglycerol |
本文献已被 SpringerLink 等数据库收录! |
|