Biotinylated cobalamins

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Albumin

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514 2, 514 8, 514 52, 530409, 536 264, 536 2641, 5483037, A61K 3170, A61K 3816, C07H 2300, C07K 1113

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active

057392870

ABSTRACT:
A biotinylated cobalamin, formed from a vitamin B.sub.12 molecule coupled to a biotin molecule, is disclosed. In a preferred embodiment, the vitamin B.sub.12 molecule is cyanocobalamin. The biotin molecule can also be coupled to a rerouting moiety, optionally through a biotin binding protein such as avidin or streptavidin. The biotinylated cobalamin binds to a cell surface receptor, is invaginated, and once internalized affects the receptor trafficking pathway.

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