1.1.1.B47	4-hydroxybutanoate + NADP+ = succinate semialdehyde + NADPH + H+	-	-	
1.1.1.B47	4-hydroxybutanoate + NADP+ = succinate semialdehyde + NADPH + H+	the enzyme performs an acid/base catalytic mechanism involving Lys170 as the general acid and a conserved active-site water molecule	737745