Department of Cell Biology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35924.
Mol Biol Cell. 2018 Apr 15;29(8):937-947. doi: 10.1091/mbc.E17-11-0622. Epub 2018 Mar 30.
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.
低温阻断物用于同步蛋白运输,抑制 GBF1 功能,导致 ARF1-GTP 水平降低,ARF1 效应因子 golgin-160 定位错误。其他几种但不是全部的高尔基体蛋白,包括 ARL1,也发生了定位错误。ARF1 活性和 golgin-160 的定位需要 30 多分钟才能从这些阻断中恢复。