“Desthiobiotin, 250 microM, norbiotin, bisnorbiotin, thioctic acid , valeric acid, probenecid, and nonanoic acid inhibited the transport of 30 microM biotin , whereas other biotin derivatives, as well as biocytin and organic acids found in the urine of biotinidase-deficient patients, did not.”
“Preloading of the vesicles with biotin, desthiobiotin, norbiotin, and thioctic acid in the presence of Na+ increased initial uptake of biotin from the incubation medium (trans-stimulation).”