Abstract: Compositions and methods for conferring herbicide resistance or tolerance upon plants towards certain classes of herbicide are provided. In particular these are amine, alcohol and aminal herbicides. The compositions include nucleotide and amino acid sequences for wild-type and mutant glucosyl transferase polypeptides. The polypeptides of the invention are mutant or wild type glucosyl transferases that are capable of catalyzing the transfer of glucose to certain herbicidal structures and that, thereby, confer resistance or tolerance in plants to amine, alcohol and aminal PSII herbicides. Particularly, polypeptides of the invention include mutant or wild-type bx-type UDP glucosyl transferases.