Bindings in Coherent GT are almost 100% identical with these in Coherent UI 2.x, and reside in the Coherent.UIGT namespace. You should only change the namespace used.
Note
Currently Coherent GT does not support BoundObjects, so you'll have to remove them in your projects with GT.
You can check out the "BindingGT" sample about example usage of bindings in GT.