(2S)-2-hydroxy-3-oxobutyl phosphate + formate + H(+) => D-ribulose 5-phosphate
(2s)-2-hydroxy-3-oxobutyl phosphate + formate + h(+) => d-ribulose 5-phosphate
(2S)-2-hydroxy-3-oxobutyl phosphate + formate + H(+) => D-ribulose 5-phosphate
(2s)-2-hydroxy-3-oxobutyl phosphate + formate + h(+) => d-ribulose 5-phosphate