Origin of homochirality in biological systems
Models for segregation of racemic mixtures of chiral amphiphiles and lipophiles in aqueous solutions show that the amphiphiles with active isomerization kinetics can perform a spontaneous symmetry break during the segregation and self-assemble to homochiral matter. Based on physico-chemical facts, it is argued that D-glyceraldehyde, which was synthesized from the volatiles at the hydrothermal reactors at the origin of life, could be the origin of homochirality in biological systems.(Published Online September 8 2005)
(Received March 14 2005)
(Accepted April 12 2005)
Key Words: D-glyceraldehyde; homochirality; origin of life.