Compound as reactive (1)

aldehydo-L-galactonate → H₂O + 2-dehydro-3-deoxy-L-galactonate

Compound as product (1)

aldehydo-L-galactonate + NADP⁺ ← NADPH + aldehydo-D-galacturonate + H⁺

Reversible reaction (3)

aldehydo-L-galactonate + H⁺ ↔ L-galactono-1,4-lactone + H₂O

H₂O + L-galactono-1,5-lactone ↔ aldehydo-L-galactonate + H⁺

aldehydo-L-galactonate + NAD⁺ ↔ NADH + D-tagaturonate + H⁺