SYNTHESIS OF GLYCINE BETAINE FROM EXOGENOUS CHOLINE IN THE MODERATELYHALOPHILIC BACTERIUM HALOMONAS-ELONGATA

Authors
CANOVAS D VARGAS C CSONKA LN VENTOSA A NIETO JJ
Citation
D. Canovas et al., SYNTHESIS OF GLYCINE BETAINE FROM EXOGENOUS CHOLINE IN THE MODERATELYHALOPHILIC BACTERIUM HALOMONAS-ELONGATA, Applied and environmental microbiology (Print), 64(10), 1998, pp. 4095-4097
Citations number
18
Categorie Soggetti
Microbiology,"Biothechnology & Applied Migrobiology
Journal title
Applied and environmental microbiology (Print) → ACNP
ISSN journal
00992240
Volume
64
Issue
10
Year of publication
1998
Pages
4095 - 4097
Database
ISI
SICI code
0099-2240(1998)64:10<4095:SOGBFE>2.0.ZU;2-6
Abstract
The role of choline in osmoprotection in the moderate halophile Halomo nas elongata has been examined. Transport and conversion of choline to betaine began immediately after addition of choline to the growth med ium. Intracellular accumulation of betaine synthesized from choline wa s salt dependent up to 2.5 M NaCl. Oxidation of choline was enhanced a t 2.0 M NaCl in the presence or absence of externally provided betaine . This indicates that the NaCI concentration in the growth medium has major effects on the choline-betaine pathway of H. elongata.