N-acetyl-L-glutamyl 5-phosphate + NADPH + H(+) => N-acetyl-L-glutamate 5-semialdehyde + phosphate + NADP(+)
n-acetyl-l-glutamyl 5-phosphate + nadph + h(+) => n-acetyl-l-glutamate 5-semialdehyde + phosphate + nadp(+)