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Updated: Dec 18, 2025

Cell Surface Receptor Identification Using Genome-Scale CRISPR/Cas9 Genetic Screens
Published on: June 6, 2020
Expressional pattern of known and predicted signaling proteins in seven human cell lines
Daniela Pollak1, Kurt Krapfenbauer, Michael Fountoulakis
1Department of Pediatrics, Division Basic Science, University of Vienna, Währinger Gürtel 18, A-1090 Vienna, Austria.
Abstract:
Although a variety of signaling systems and signaling proteins have been described, cell specific expression of these structures has not yet been systematically studied. Human amnion, bronchial epithelial, fibroblast, glial, kidney, lymphocyte and mesothelial cells were subjected to two-dimensional-gel electrophoresis followed by analysis of protein spots by MALDI-TOF and subsequent identification by specific software. A series of well-documented signaling proteins showed cell specific expressional patterns. Five hypothetical proteins--hypothetical 37.5 kDa protein, similar to calsyntenin 1, hypothetical armadillo repeat/plakoglobulin ARM-repeat profile containing protein, 11 days embryo cDNA clone 2700084k13, hypothetical protein flj22171--so far predicted from their nucleic acid sequence only, were identified, complementing already reported signaling cascades. An analytical tool for the concomitant determination of a large series of signaling structures by an antibody independent protein-chemical method is provided.
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