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Updated: Feb 14, 2026

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
Published on: August 10, 2017
Commonly used trafficking blocks disrupt ARF1 activation and the localization and function of specific Golgi proteins
Catherine E Gilbert1, Elizabeth Sztul2, Carolyn E Machamer1
1Department of Cell Biology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Abstract:
Cold temperature blocks used to synchronize protein trafficking inhibit GBF1 function, leading to a decrease in ARF1-GTP levels and mislocalization of the ARF1 effector golgin-160. Several other, but not all, Golgi proteins including ARL1 also mislocalize. ARF1 activity and golgin-160 localization require more than 30 min to recover from these blocks.
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