| http://www.w3.org/ns/prov#value | - When the molecule to be modified is a polypeptide, the aldehyde moiety is introduced at the N-terminus, and can be generated by oxidative cleavage at adjacent hydroxyl and amino groups found in N-terminal serine or threonine residues. [0024] In another embodiment of the invention, a modified molecule is provided having an increased serum half-life relative to the molecule per se, i.e., the ???unmo
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