brefeldin A
nounEtymology From Eupenicillium brefeldianum (a fungus in which it is found) + -in.
1
Biochemistry, Biology, Chemistry, Microbiology, Natural sciences, Physical sciences A lactone antibiotic produced by fungal organisms such as Eupenicillium brefeldianum, inhibiting transport of proteins from ER to Golgi and inducing retrograde protein transport from the Golgi apparatus to the endoplasmic reticulum.