Journal: eLife
Article Title: Evolutionary and functional analyses reveal a role for the RHIM in tuning RIPK3 activity across vertebrates
doi: 10.7554/eLife.102301
Figure Lengend Snippet: ( A ) Alignment of RIPK1 RHIM across diverse vertebrates. Residue numbers refer to the human sequence. Lancelet species is Branchiostoma floridae . ( B ) Diverse vertebrate RIPK1 CT proteins were transfected into HEK293T cells along with NF-κB firefly luciferase and control renilla luciferase reporter plasmids (see Materials and methods), and NF-κB activity was measured at 18 hr post-transfection. ( C ) Alignment of ZBP1 RHIMs across diverse vertebrates. Residue numbers refer to the human sequence. ( D ) Activation of NF-κB by WT and RHIM mutant ZBP1 proteins. ( E ) NF-κB activation by human RIPK3 with the indicated RHIM tetrad variant. ( F ) Human RIPK3 proteins with the indicated RHIM tetrad variants were transfected into HEK293T cells with MLKL (gray circles) or MLKL and ZBP1 (orange squares), and viability was measured at 18 hr post-transfection. Data are representative of 2–5 independent experiments with n=3–6 replicates per group. Data were analyzed using two-way ANOVA with Šidák’s multiple comparisons test ( A, D ), one-way ANOVA with Tukey’s multiple comparisons test ( E ), or two-way ANOVA with Tukey’s multiple comparisons test ( F ). ns = not significant, ****=p<0.0001. Figure 4—source data 1. Raw data for the bar graphs in depicting NF-κB (B, D, E) and cell death (F) activation by various RHIM-containing proteins.
Article Snippet: Coding sequences for human RIPK1 (Addgene #78834), human RIPK2 (ORFeome ID #4886), human RIPK3 (Addgene #78804), mouse RIPK1 (Addgene #115341), and mouse RIPK3 (Addgene #78805) were cloned into apcDNA5/FRT/TO backbone (Invitrogen, Carlsbad, CA, USA) with an N-terminal V5 tag and linker using Gibson Assembly (New England Biolabs, Ipswich, MA, USA).
Techniques: Residue, Sequencing, Transfection, Luciferase, Control, Activity Assay, Activation Assay, Mutagenesis, Variant Assay