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Titolo:
EFFECTS OF OCTANE ON THE FATTY-ACID COMPOSITION AND TRANSITION-TEMPERATURE OF PSEUDOMONAS-OLEOVORANS MEMBRANE-LIPIDS DURING GROWTH IN 2-LIQUID-PHASE CONTINUOUS CULTURES
Autore:
CHEN Q; NIJENHUIS A; PREUSTING H; DOLFING J; JANSSEN DB; WITHOLT B;
Indirizzi:
ETH HONGGERBERG,HPT,INST BIOTECHNOL CH-8093 ZURICH SWITZERLAND UNIV GRONINGEN,GRONINGEN BIOTECHNOL CTR,DEPT POLYMER CHEM GRONINGEN NETHERLANDS UNIV GRONINGEN,GRONINGEN BIOTECHNOL CTR,DEPT BIOCHEM GRONINGEN NETHERLANDS GIST BROCADES DELFT NETHERLANDS INST BIOTECHNOL ZURICH SWITZERLAND
Titolo Testata:
Enzyme and microbial technology
fascicolo: 7, volume: 17, anno: 1995,
pagine: 647 - 652
SICI:
0141-0229(1995)17:7<647:EOOOTF>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENZYMATIC OMEGA-OXIDATION; SP STRAIN ABE-1; ESCHERICHIA-COLI; PSYCHROPHILIC BACTERIUM; CIS; CONVERSION; REDUCTASE; TOLERANCE; MUTANTS; P8;
Keywords:
FATTY ACID COMPOSITION; LIPID TRANSITION TEMPERATURE; OCTANE; 2-LIQUID-PHASE SYSTEM; PSEUDOMONAS OLEOVORANS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
Q. Chen et al., "EFFECTS OF OCTANE ON THE FATTY-ACID COMPOSITION AND TRANSITION-TEMPERATURE OF PSEUDOMONAS-OLEOVORANS MEMBRANE-LIPIDS DURING GROWTH IN 2-LIQUID-PHASE CONTINUOUS CULTURES", Enzyme and microbial technology, 17(7), 1995, pp. 647-652

Abstract

Growth of Pseudomonas oleovorans GPol in continuous culture containing a bulk n-octane phase resulted in changes of the fatty acid composition of the membrane lipids. Compared to citrate-grown cells, the ratioof C-18 to C-16 fatty acids and the ratio of unsaturated to saturatedfatty acids increased as a result of growth on octane. Trans-unsaturated fatty acids, which are rarely found in bacteria, were formed during continuous growth of P. oleovorans on octane. Moreover, the mean acyl chain length and unsaturated fatty acids also increased as the growth rates increased both in octane-grown and citrate-grown cells. Differential scanning calorimetry measurements of extracted lipids showed the transition temperature of membrane lipids from octane-grown cells increased from about 24 degrees C to 32 degrees C as the growth rate increased, whereas cells grown on citrate showed a constant transition temperature of about 6 degrees C at all growth rates tested indicating adecrease of membrane lipid fluidity in octane-grown cells. Because alkanes are known to increase bilayer fluidity by intercalating between lipid fatty acyl chains, the increased transition temperature of the lipids of cells grown on octane may be a physiological response of P. oleovorans to compensate for the direct effects of octane on its cellular membranes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:46:11