MAM1 (2-isopropylmalate synthase 3); 2-isopropylmalate synthase. Identical to Methylthioalkylmalate synthase 1, chloroplast precursor (MAM1) [Arabidopsis Thaliana] (GB:Q9FG67;GB:Q70YX4;GB:Q70YX9); similar to IMS2/MAM-L/MAM3 (METHYLTHIOALKYMALATE SYNTHASE-LIKE), 2-isopropylmalate synthase/ methylthioalkylmalate synthase [Arabidopsis thaliana] (TAIR:AT5G23020.1); similar to methylthioalkylmalate synthase a [Arabidopsis lyrata subsp. lyrata] (GB:CAJ55515.1); similar to methylthioalkylmalate synthase a [Arabidopsis cebennensis] (GB:CAJ55509.1); similar to methylthioalkylmalate synthase a [Arabidopsis lyrata subsp. petraea] (GB:CAJ55506.1); conta