By ESPNSTAR.com staff
The right-sided defender has established himself as a useful squad member since moving to the Veltins-Arena in 2010, making 43 appearances in all competition in his debut season before following up by playing 26 games last term.
And with his previous contract set to expire in a year's time, the Royal Blues have moved to tie him down for an additional two years, something general manager Horst Heldt believes the player deserved.
"Atsuto loves playing the game," he said.
"We're delighted he's signed a new deal because he's a very dependable player who identifies 100% with FC Schalke 04."
Schalke have also secured the long-term future of goalkeeper Lars Unnerstall, who established himself as Schalke's first-choice between the posts last season following an injury to Ralf Fahrmann.
Nonetheless, the 22-year-old will have a battle on his hands for the number one spot this term following the summer signing of veteran Timo Hildebrand, as well as Fahrmann's return to full fitness.