Updated project metadata. To investigate proteins interacting with STING mutants, HEK 293T cells were co-transfected with three STING mutant expression plasmids (human STING WT, STING delCTT (aa343-379 deletion), STING del6 (aa325-379 deletion) in a pcDNA3.1+ backbone) and either pcDNA-cGAS expression plasmid or control empty pcDNA plasmid. Lysed cells were then immunoprecipitated using sheep anti-STING or control sheep anti-IgG antibodies and protein G magnetic Dynabeads.