Updated annotation (from data): alpha-glucosidase / maltase / trehalase / sucrase (EC 3.2.1.48; EC 3.2.1.20; EC 3.2.1.28) Rationale: Very important for fitness during growth on maltose, trehalose, or sucrose. 60% identical to Halomonas HaG, which is most active on maltose and sucrose and has some activity on trehalose (PMC3298133). Dshi_1649 is also important for utilization of glucose, which is not explained. The glucose phenotype is variable and might reflect polar effects on Dshi_1648, a component of the glucose/maltose/trehalose/sucrose transporter. Original annotation: alpha amylase catalytic region (RefSeq) Type 1: Protein-coding gene Located on scaffold 57145, - strand, nucleotides 1,713,282 to 1,714,940 See nucleotide sequence around Dshi_1649 or for all of scaffold 57145