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(+)