The larger subunits SPTLC1 and SPTLC2/SPTLC3 together form the catalytic core while a smaller third subunit either SSSPTA or SSSPTB has been shown to increase the catalytic efficiency and provide substrate specificity for the fatty acyl-CoA substrates. The in vivo biological significance of these...
I was trying to manipulate PTB4 instead of PTA4. It work perfectly now. The instant drop to 0V is normal because A4 is always an output as soon as the other higher priority functions are disabled and as PTA is cleared on POR you get low. Here is my test programme in assembler, the...