  We show that Wess-Zumino terms for D-p branes with p>0 in the Anti-de Sitter
(AdS) space are given in terms of "left-invariant" currents on the super-AdS
group or the "expanded" super-AdS group. As a result there is no topological
extension of the super-AdS algebra. In the flat limit the global Lorentz
rotational charges of the AdS space turn out to be brane charges of the
supertranslation algebra representing the BPS mass. We also show that a
D-instanton is described by the GL(1) degree of freedom in the Roiban-Siegel
formalism based on the GL(4|4)/[Sp(4)xGL(1)]^2 coset.
