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Absence of subtransition in racemic dipalmitoylphosphatidylcholine vesicles |
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| Authors: | Athanas I. Boyanov Boris G. Tenchov Rumiana D. Koynova Kamen S. Koumanov |
| Affiliation: | Central Laboratory of Biophysics, Bulgarian Academy of Sciences, Acad. G. Bonchev. Str. Bl. 6, Sofia 1113 Bulgaria |
| Abstract: | dl-Dipalmitoylphosphatidylcholine multilamellar vesicle suspensions were examined by the method of differential scanning calorimetry. A lack of the subtransition at 18°C was established. Such a subtransition is characteristic for l-dipalmitoylphosphatidylcholine suspensions. This lack is supposed to be the result of the impossibility of the racemic phospholipid mixture to form the low-temperature crystal structure Lc. |
| Keywords: | Phospholipid vesicle Dipalmitoylphosphatidylcholine Racemic mixture Phase transition Differential scanning calorimetry |
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