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zhaoyangqufu

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

[½»Á÷] ÈçºÎ½âÊÍ--ÊÖÐÔ

In the transition from molecular chirality to surface chirality,
the degree of asymmetry on organized arrays of cholesterol and
leu-leu-tyr, such as can be perceived by an external chiral agent
(the antibody), is decreased. The chirality expressed on the step
surface in cholesterol and on the groove surface in leu-leu-tyr is
much less evident than in the constituent molecules. It becomes
similar to the chirality expressed on the (102) surface of calcium
oxalate crystals, whose constituent molecule is not chiral. Yet,
specialized macromolecules interacting with these surfaces are
able to discriminate between them, under the proper circumstances.
We feel that these studies begin to provide a glimpse
into the transition from molecular asymmetry to macroscopic
asymmetry, one of the fundamental and little understood
phenomena in chemistry and in biology.
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herong2007

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2Â¥2009-04-06 11:07:21
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zhaoyangqufu

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

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3Â¥2009-04-21 18:49:37
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zhaoyangqufu

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

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Originally posted by herong2007 at 2009-4-6 11:07:
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