TABLE 3.
Masses of glucose-containing lipids isolated from E. coli membranes expressing YpfP or YpfP/LtaA
| Compound | Glycolipida | Chemical formula | Possible fatty acid chain length | Predicted molecular mass | Observed molecular mass for:
|
|
|---|---|---|---|---|---|---|
| YpfP | YpfP and LtaA | |||||
| I | PL2 (Glc2-DAPG)a | C82H150Na2O22P1 | 2×C16/2×C16:1 | 1,564.02 | 1,563.89 | Absent |
| C84H154Na2O22P | C16/2×C16:1/C18 | 1,592.05 | 1,591.92 | Absent | ||
| C86H158Na2O22P | C16/C16:1/C18/C18:1 | 1,620.08 | 1,619.96 | Absent | ||
| II | Glc2-DAG | C47H86NaO15 | C16/C16:1 | 913.59 | 913.50 | 913.51 |
| C49H90NaO15 | C16/C18:1 | 941.61 | 941.53 | 941.54 | ||
| III | Glc3-DAG | C53H96NaO20 | C16/C16:1 | 1,075.64 | 1,075.56 | Absent |
| C55H100NaO20 | C16/C18:1 | 1,103.67 | 1,103.58 | Absent | ||
| IV | PL1 (Glc-PG)a | C44H82Na2O15P | C16/C16:1 | 927.52 | 927.45 | 927.45 |
| C46H86Na2O15P | C16/C18:1 | 955.55 | 955.48 | 955.48 | ||
a
See reference 24.