GPHR_N is the N-terminal 5TM region of the Golgi pH regulator proteins in eukaryotes. It plays vital roles in the transport of newly synthesized proteins from the Golgi to the plasma membrane, in the glycosylation of proteins along the exocytic pathway and the structural organisation of the Golgi apparatus [1,2,3].

1: GPHR is a novel anion channel critical for acidification and functions of the Golgi apparatus. Maeda Y, Ide T, Koike M, Uchiyama Y, Kinoshita T; Nat Cell Biol. 2008;10:1135-1145. PMID:18794847

2: Two novel GPCR-type G proteins are abscisic acid receptors in Arabidopsis. Pandey S, Nelson DC, Assmann SM; Cell. 2009;136:136-148. PMID:19135895

3: Chloride channels of intracellular membranes. Edwards JC, Kahl CR; FEBS Lett. 2010;584:2102-2111. PMID:20100480