Figure 2.
Sensitivity and specificity of IMPDH1 and IMPDH2 antibodies. Antibodies were tested against various concentrations of denatured recombinant canonical IMPDH1 and IMPDH2 proteins in standard Western analyses. Anti-N-IMPDH1 is IMPDH1 specific and anti-C-IMPDH2 is IMPDH2 specific. Anti-C-IMPDH1 had a much higher affinity (50×) for IMPDH1 than for IMPDH2. Anti-C-IMPDH1+2 can detect IMPDH1 and IMPDH2 with relative equal affinities. The distinguishable electrophoretic pattern of IMPDH1 and IMPDH2 recombinant proteins are due to variation in tag length.