a 1-acyl-sn-glycero-3-phosphate + L-serine + H(+) => a 1-acyl-sn-glycero-3-phospho-L-serine + H2O
a 1-acyl-sn-glycero-3-phosphate + l-serine + h(+) => a 1-acyl-sn-glycero-3-phospho-l-serine + h2o
a 1-acyl-sn-glycero-3-phosphate + L-serine + H(+) => a 1-acyl-sn-glycero-3-phospho-L-serine + H2O
a 1-acyl-sn-glycero-3-phosphate + l-serine + h(+) => a 1-acyl-sn-glycero-3-phospho-l-serine + h2o