A pre-protein is a form that contains a signal sequence that specifies its insertion into or through membranes. A pro-protein is one that is inactive; the full function is only present when an inhibitory sequence has been removed by proteolysis. A pre-pro-protein has both sequences still present. Pre-pro-proteins usually only accumulate as products
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= September 24 = == excise tax == An excise tax creates inefficiency in that the number of transactions in a market is reduced. Because the tax discourages mutually beneficial transactions, there is _ from a tax. 00:24, 24 September 2007 (UTC) == Mexico`s view on Palestine == What was Mexico`s view on Palestine right after WWI? Did ..
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