Most abundant protein
malcolm at unity.ncsu.edu
Wed Jan 24 20:50:19 EST 1996
>> Well, I've heard that it's lignin, which is some protein that I believe
>> plays a structural role in wood, sort of as collagen does in animals.
>A note of clarification. Lignin is no more of a protein than cellulose.
>Both are C H O polymers generated from glucose by enzymatic activity.
>Neither contains amino groups.
Point of clarification. Cellulose is a homopolymer of glucose and is a
CHO (carbohydrate). Lignin is not a carbohydrate. Lignin is a
heteropolymer (usually) of hydroxycinnamyl alcohols (derived via the
shikimate, phenylpropanoid, and monolignol biosynthetic pathways). The
route from glucose to lignin is certainly a lot longer(around 30
steps)than the route from glucose to cellulose (not really known, but
likely less than half a dozen). Neither are proteins but they do rank
number one and number two in terms of abundance of biopolymers.
Most abundant protein? Actin seems like a good bet.
Hope this has been helpful.
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+ Malcolm M.Campbell + malcolm at unity.ncsu.edu +
+ Forest Biotechnology Group + phone:(919)515-7799 +
+ Department of Forestry + (919)515-7800 +
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