1.1.1.31	native enzyme, the holoenzyme, binary complexes with NAD+, (S)-3-hydroxyisobutyrate, (R)-3-hydroxyisobutyrate, L-serine and 3-hydroxypropanoic acid and ternary complexes involving the substrates and NAD+, microbatch-under-oil method, using 0.02 M MgCl2, 0.1 M HEPES (pH 7.5), 22% (w/v) polyacrylic acid sodium salt 5100	760528	
1.1.1.31	powdered ammonium sulfate is added to the enzyme solution until it becomes slightly turbid, after 4 days crystallization is complete	286547