PMID- 10209125 OWN - NLM STAT- MEDLINE DCOM- 19990511 LR - 20190728 IS - 0960-9822 (Print) IS - 0960-9822 (Linking) VI - 9 IP - 7 DP - 1999 Apr 8 TI - A novel Golgi-localisation domain shared by a class of coiled-coil peripheral membrane proteins. PG - 385-8 AB - The mechanism by which peripheral membrane proteins are targeted to the cytoplasmic face of the Golgi apparatus is poorly understood. Previously, we have identified a carboxy-terminal domain of the trans-Golgi-network (TGN) protein p230 that is responsible for Golgi localisation [1]. Here, we report the identification of a similar Golgi-localisation domain (GLD, also termed the 'GRIP' domain - see the paper by Munro and Nichols elsewhere in this issue) in a family of putative peripheral membrane proteins from lower and higher eucaryotes. The majority of family members have a domain structure similar to that of p230, with extensive coiled-coil regions (>80%) and the potential GLD located in a non-coiled-coil domain at the carboxyl terminus. Previously reported proteins in this family include human golgin-97 and Saccharomyces cerevisiae Imh1p. By constructing chimeric cDNAs encoding carboxy-terminal regions of these family members fused to green fluorescent protein (GFP), we have directly demonstrated that the GLD of p230, golgin-97, the newly identified human protein GCC1p and yeast Imh1p functions as a Golgi-targeting domain in transfected mammalian cells. Site-directed mutagenesis of the GLDs identified two conserved aromatic residues that are critical for the function of this targeting domain. Endogenous p230 was displaced from the Golgi membranes in transfected cells expressing high levels of GFP fused to the GLD of either p230 or golgin-97, indicating that different GLDs interact with similar membrane determinants. Thus, we have identified a family of coiled-coil proteins that share a domain shown to be sufficient for the localisation of peripheral membrane proteins to the Golgi apparatus. FAU - Kjer-Nielsen, L AU - Kjer-Nielsen L AD - Department of Pathology and Immunology, Monash University Medical School, Melbourne, Victoria, Australia 3181. FAU - Teasdale, R D AU - Teasdale RD FAU - van Vliet, C AU - van Vliet C FAU - Gleeson, P A AU - Gleeson PA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Curr Biol JT - Current biology : CB JID - 9107782 RN - 0 (Autoantigens) RN - 0 (GOLGA4 protein, human) RN - 0 (Luminescent Proteins) RN - 0 (Membrane Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Amino Acid Sequence MH - Animals MH - *Autoantigens MH - Binding Sites/genetics MH - COS Cells MH - Fluorescent Antibody Technique MH - Golgi Apparatus/*metabolism MH - Green Fluorescent Proteins MH - Humans MH - Luminescent Proteins/genetics/metabolism MH - Membrane Proteins/chemistry/*metabolism MH - Microscopy, Confocal MH - Molecular Sequence Data MH - Mutation MH - Protein Binding MH - Protein Structure, Tertiary MH - Recombinant Fusion Proteins/genetics/metabolism MH - Sequence Homology, Amino Acid EDAT- 1999/04/21 00:00 MHDA- 1999/04/21 00:01 CRDT- 1999/04/21 00:00 PHST- 1999/04/21 00:00 [pubmed] PHST- 1999/04/21 00:01 [medline] PHST- 1999/04/21 00:00 [entrez] AID - S0960-9822(99)80168-7 [pii] AID - 10.1016/s0960-9822(99)80168-7 [doi] PST - ppublish SO - Curr Biol. 1999 Apr 8;9(7):385-8. doi: 10.1016/s0960-9822(99)80168-7.