This antibody can be used as a Golgi marker in immunolocalization and as a marker of COP1 in Western blot.References describing immunolocalization (IF) and (IG) studies:Pimpl et al (2000). In Situ Localization and in Vitro Induction of Plant COPI-Coated Vesicles. Plant Cell. 2000 Nov;12(11):2219-36. Ritzenthaler et al. (2002). Reevaluation of the Effects of Brefeldin A on Plant Cells Using Tobacco Bright Yellow 2 Cells Expressing Golgi-Targeted Green Fluorescent Protein and COPI Antisera. Plant Cell. 2002 Jan;14(1):237-61.