Catalyzes the specific phosphorylation of the 3-hydroxyl group of shikimic acid using ATP as a cosubstrate. ATP + shikimate = 3-phosphoshikimate + ADP + H(+) Binds 1 Mg(2+) ion per subunit. Metabolic intermediate biosynthesis; chorismate biosynthesis; chorismate from D-erythrose 4-phosphate and phosphoenolpyruvate: step 5/7. Homodimer. A number of isoforms are produced. According to EST sequences. By heat stress. No visible phenotype under normal growth conditions. SK1 forms a homodimer in solution, which may facilitate its relative thermostability when exposed at 37 degrees Celsius. Belongs to the shikimate kinase family.