TABLE 2

Content of unsaturated C16 to C20 series fatty acids in E. coli membranes


Fatty Acid

MolecularWeight

Amount Present in E. coli Membranesa
16:1n-9 254.4 0.18
16:1n-7 254.4 1.84
17:1 268.5 14.60
18:1n-9 282.5 0.19
18:1n-7 282.5 3.32
19:1 296.5 0.00
20:1n-11 310.5 0.00
20:1n-9 310.5 0.00
18:2n-9 280.4 0.66
20:2n-9 308.5 0.15
20:3n-9 306.5 0.00
18:2n-6 280.4 0.02
18:3n-6 278.4 3.36
20:2n-6 308.5 0.00
20:3n-6 306.5 0.00
20:4n-6 304.5 0.01
16:2n-3 256.4 0.14
18:3n-3 278.4 0.03
18:4n-3 276.4 0.00
20:3n-3 306.5 0.02
20:5n-3
302.5
0.00
  • a Units for fatty acid content are micromolar for a 1-mg/ml suspension of E. coli membrane