title: A high-throughput method to globally study the organelle morphology in S. cerevisiae.
abstract: High-throughput methods to examine protein localization or organelle morphology is an effective tool for studying protein interactions and can help achieve an comprehensive understanding of molecular pathways. In Saccharomyces cerevisiae, with the development of the non-essential gene deletion array, we can globally study the morphology of different organelles like the endoplasmic reticulum (ER) and the mitochondria using GFP (or variant)-markers in different gene backgrounds. However, incorporating GFP markers in each single mutant individually is a labor-intensive process. Here, we describe a procedure that is routinely used in our laboratory. By using a robotic system to handle high-density yeast arrays and drug selection techniques, we can significantly shorten the time required and improve reproducibility. In brief, we cross a GFP-tagged mitochondrial marker (Apc1-GFP) to a high-density array of 4,672 nonessential gene deletion mutants by robotic replica pinning. Through diploid selection, sporulation, germination and dual marker selection, we recover both alleles. As a result, each haploid single mutant contains Apc1-GFP incorporated at its genomic locus. Now, we can study the morphology of mitochondria in all non-essential mutant background. Using this high-throughput approach, we can conveniently study and delineate the pathways and genes involved in the inheritance and the formation of organelles in a genome-wide setting.
authors.affiliation: Department of Cellular and Physiological Sciences, University of British Columbia.
authors.forename: Shabnam
authors.initials: S
authors.lastname: Tavassoli
authors.forename: Jesse Tzu-Cheng
authors.initials: JT
authors.lastname: Chao
authors.forename: Christopher
authors.initials: C
authors.lastname: Loewen
mesh_terms: D049452:Green Fluorescent Proteins / Q000737:chemistry / Q000235:genetics; D018613:Microscopy, Confocal / Q000379:methods*; D015388:Organelles / Q000378:metabolism / Q000648:ultrastructure*; D012371:Robotics / Q000379:methods*; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000378:metabolism* / Q000648:ultrastructure*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: D029701:Saccharomyces cerevisiae Proteins; D049452:Green Fluorescent Proteins