Table I.

Transition temperatures of synthetic PEs

Phospholipid	Tm	Th	Recognition by 24.8.Ac
	°Ca	°Cb
Di-12:0 PE	17	44	Yes
Di-14:0 PE	50	123d	No
Di-16:0 PE	63	118	No
Di-18:0 PE	74	100	No
Di-16:1[cis] PE	−33	0	Yes
Di-18:1[cis] PE	−16	10	Yes
Di-18:1[trans] PE	38	64	No
Di-18:2[cis] PE	−40	−15	Yes
Di-18:3[cis] PE	NAe	−30	Yes
16:0–18:1[cis] PE	25	71	Yes

^aT_m is the transition temperature from the gel to fluid liquid crystalline phase.

^bT_h is the transition temperature from the lamellar to hexagonal (H_II) phase.

^cRecognition by the 24.8.A iNKT cell hybridoma in the plate-bound CD1d assay (based on data from Fig. 5).

^dAll transition temperatures are approximate and for lipid in aqueous solution (water or physiological buffer), with the exception of di-14:0 PE, which appears to undergo transition to the hexagonal phase in aqueous solution only at high salt concentrations (e.g., 2.4 M NaCl). Transition temperatures were obtained from LIPIDAT databases (www.lipidat.chemistry.ohio-state.edu).

^eNA, not available.