1.1.1.373 2,3-dihydroxypropane-1-sulfonate + NAD+ = 2-hydroxy-3-oxopropane-1-sulfonate + NADH + H+ - - 1.1.1.373 2,3-dihydroxypropane-1-sulfonate + NAD+ = 2-hydroxy-3-oxopropane-1-sulfonate + NADH + H+ rapid equilibrium sequential Bi-Bi mechanism, dynamic domain movements occurs during catalysis. A conserved sulfonate pocket in SLA reductase recognizes the sulfonate oxygens through hydrogen bonding to Asn174, Ser178, and the backbone amide of Arg123, along with an ordered water molecule 762529