glutarate-semialdehyde dehydrogenase (NADP+) activity
Catalysis of the reaction: 5-oxopentanoate + NADP + H2O = glutarate + NADPH + 2 H+.
GO:0016620
oxidoreductase activity, acting on the aldehyde or oxo group of donors, NAD or NADP as acceptor
is_a