Compound as reactive (2)

2 GDP-α-D-rhamnose + (3S,3'S)-astaxanthin → 2 H⁺ + 2 GDP + astaxanthin dirhamnoside

NADH + H⁺ + oxygen + (3S,3'S)-astaxanthin → H₂O + NAD⁺ + 2-hydroxyastaxanthin

Compound as product (5)

2 a reduced ferredoxin [iron-sulfur] cluster + 2 H⁺ + oxygen + adonirubin → 2 an oxidized ferredoxin [iron-sulfur] cluster + H₂O + (3S,3'S)-astaxanthin

4',4'-dihydroxyadonixanthin → H₂O + (3S,3'S)-astaxanthin

a reduced electron donor + oxygen + adonixanthin → 2 H⁺ + an oxidized electron donor + H₂O + (3S,3'S)-astaxanthin

2 oxygen + 4 a reduced ferredoxin [iron-sulfur] cluster + 4 H⁺ + canthaxanthin → 2 H₂O + 4 an oxidized ferredoxin [iron-sulfur] cluster + (3S,3'S)-astaxanthin

2 a reduced electron donor + 2 oxygen + adonixanthin → 2 an oxidized electron donor + 3 H₂O + (3S,3'S)-astaxanthin

Reversible reaction (1)

2 NADH + 2 H⁺ + 2 oxygen + (3S,3'S)-astaxanthin ↔ 2 H₂O + 2 NAD⁺ + 2,3,2',3'-tetrahydroxy-β,β-carotene-4,4'-dione