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High-throughput (HTP) protein-interaction assays, such as the yeast two-hybrid (Y2H) system, are enormously useful in predicting the functions of novel gene-products. HTP-Y2H screens typically do not include all of the reconfirmation and specificity tests used in small-scale studies, but the effects of omitting these steps have not been assessed. We performed HTP-Y2H screens that included all standard controls, using the predicted intracellular proteins expressed from the human MHC class III region, a region of the genome associated with many autoimmune diseases. The 91 novel interactions identified provide insight into the potential functions of many MHC genes, including C6orf47, LSM2, NELF-E (RDBP), DOM3Z, STK19, PBX2, RNF5, UAP56 (BAT1), ATP6G2, LST1/f, BAT2, Scythe (BAT3), CSNK2B, BAT5, and CLIC1. Surprisingly, our results predict that 1/3 of the proteins may have a role in mRNA processing, which suggests clustering of functionally related genes within the human genome. Most importantly, our analysis shows that omitting standard controls in HTP-Y2H screens could significantly compromise data quality.
Pubmed ID: 14667819 RIS Download
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THIS RESOURCE IS NO LONGER IN SERVICE. Documented on March 17, 2022. Designed to capture protein function, defined at molecular level as set of other molecules with which protein interacts or reacts along with molecular outcome. Archives biomolecular interaction, complex and pathway information. A web-based system is available to query, view and submit records. BIND continues to grow with the addition of individual submissions as well as interaction data from the PDB and a number of large-scale interaction and complex mapping experiments using yeast two hybrid, mass spectrometry, genetic interactions and phage display.
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