Binding to biotin (cis-tetrahydro-2-oxothieno(3,4-d)imidazoline-4-valeric acid), the (+) enantiomer of which is very widely distributed in cells and serves as a carrier in a number of enzymatic beta-carboxylation reactions. [GOC:jl, ISBN:0198506732]
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C5: Ontology GO: Gene Ontology GO:MF: GO Molecular Function