Autumn starts officially tomorrow and we'll soon be able to look at all the marvelous colors of autumn leaves, at least if we live in a place where autumn means something. And I'm sure you know why tree leaves change color in the fall. It's because chlorophyll is disappearing from the leaves. While it's true, there is a responsible for the fading of the green pigment bound to a protein called LHCII. RedNova News reports that European researchers from Sweden and Poland say that a "single protein triggers the glories of the season." This protein, or more exactly, the protease FtsH6, is at the origin of the degradation of LHCII, revealing the other red, yellow or gold pigments which give to autumn leaves their wonderful colors. Read more
Sources: RedNova News, September 17, 2005; and various web sites
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6:57:43 PM
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