Open AccessGlycine betaine and polar lipid composition in halophilic archaebacteria in response to growth in different salt concentrations
Author(s) -
Nicolaus B.,
Lanzotti V.,
Trincone A.,
Rosa M.,
Grant W.D.,
Gambacorta A.
Publication year - 1989
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1989.tb03101.x
Subject(s) - betaine , glycine , halophile , biochemistry , salt (chemistry) , glycerol , chemistry , cell wall , membrane , biology , bacteria , amino acid , organic chemistry , genetics
Examples of halophilic archaebacteria contain low levels of between 1 and 20 mM trimethyl glycine (glycine betaine). In disrupted cell preparations, the glycine betaine is associated with the membrane fraction and is not detectable in cell supernatants. Cells of Natronococcus occultus grown in different salt concentrations show an increase in cell‐associated glycine betaine along with an increase in the ratio of phosphatidyl glycerophosphate (PG) to phosphatidyl glycerol (PG) in the cell membrane.