ETA is phosphorylated to PETA by CHK/ETNK
PETA is dephosphorylated to ETA by PHOSPHO1
PETA and CTP are condensed to CDP-ETA by PCY2
PA is dephosphorylated to DAG by LPIN
CDP-ETA and DAG are converted to PE by CEPT1/EPT1
PS transports from the ER membrane to the IM membrane
PS is decarboxylated to PE by PISD
PE transports from the mitochondrial membrane to the ER
Synthesis of PE