L-homoserine + ATP => O-phospho-L-homoserine + ADP + H(+)
l-homoserine + atp => o-phospho-l-homoserine + adp + h(+)
L-homoserine + ATP => O-phospho-L-homoserine + ADP + H(+)
l-homoserine + atp => o-phospho-l-homoserine + adp + h(+)