  We argue that a modification of the super-AdS algebras which accounts for the
presence of D-branes requires not only the inclusion of bosonic brane charges,
but also the inclusion of new fermionic ones. We show that such fermionic brane
charges are indeed present in the matrix model and the supermembrane in the
pp-wave limit of the corresponding backgrounds. We briefly comment on an AdS
version of Sezgin's M-algebra inspired by this observation.
