RT Journal Article SR Electronic T1 A proximity-dependent biotinylation map of a human cell: an interactive web resource JF bioRxiv FD Cold Spring Harbor Laboratory SP 796391 DO 10.1101/796391 A1 Christopher D. Go A1 James D.R. Knight A1 Archita Rajasekharan A1 Bhavisha Rathod A1 Geoffrey G. Hesketh A1 Kento T. Abe A1 Ji-Young Youn A1 Payman Samavarchi-Tehrani A1 Hui Zhang A1 Lucie Y. Zhu A1 Evelyn Popiel A1 Jean-Philippe Lambert A1 Étienne Coyaud A1 Sally W.T. Cheung A1 Dushyandi Rajendran A1 Cassandra J. Wong A1 Hana Antonicka A1 Laurence Pelletier A1 Alexander F. Palazzo A1 Eric A. Shoubridge A1 Brian Raught A1 Anne-Claude Gingras YR 2021 UL http://biorxiv.org/content/early/2021/03/17/796391.abstract AB Compartmentalization is a defining characteristic of eukaryotic cells, partitioning cellular processes into discrete subcellular locations. High throughput microscopy1 and biochemical fractionation coupled with mass spectrometry2–6 have helped to define the proteomes of a variety of organelles and macromolecular structures. However, many other intracellular compartments have remained refractory to such approaches, due for example to difficulty in purifying non-membrane bound structures. Proximity-dependent biotinylation techniques such as BioID provide an alternative approach for defining the composition of cellular compartments in living cells7–10. Here we present a BioID-based map of a human cell based on 192 markers from 32 different subcellular compartments, comprising 35,902 high confidence proximity interactions, and defining the intracellular locations of 4,145 unique proteins in HEK 293 cells. Our localization predictions meet or exceed previous-approaches, with higher specificity, and enabled the discovery of proteins at the mitochondrial outer membrane-endoplasmic reticulum (ER) interface that are critical for mitochondrial homeostasis. Based on this dataset, we have established humancellmap.org as a community resource that provides online tools for localization analysis of user BioID data, and demonstrate how this resource can be used to better understand BioID datasets.Competing Interest StatementThe authors have declared no competing interest.