Compound as reactive (1)

4-hydroxy-L-threonine + ATP → 4-phosphooxy-L-threonine + H⁺ + ADP

Compound as product (2)

H₂O + 4-phosphooxy-L-threonine → 4-hydroxy-L-threonine + phosphate

2-oxoglutarate + L-threonine + oxygen → 4-hydroxy-L-threonine + succinate + CO₂

Reversible reaction (1)

4-hydroxy-L-threonine ↔ glycine + glycolaldehyde