NOVELTY - An isolated alpha-amylase (S1) comprising the A- and C-domains of a calcium-sensitive alpha-amylase and the B-domain of a calcium-insensitive alpha-amylase, is new.    USE - For washing or dishwashing compositions, for desiring a textile, for producing a baked product, for liquefying a starch-containing material or producing liquefied starch, or for producing a fermentation product selected from alcohol (comprising ethanol and butane), organic acids (comprising succinic acid and lactic acid), sugar alcohols (comprising glycerol), ascorbic acid intermediates (comprising glucometer, 2-keto-D-gluconate, 2,5-diketo-D-gluconate, and 2-keto-L-gulonic acid), amino acids (comprising lysine), or proteins (comprising antibodies and their fragments) (all claimed), in detergents (comprising laundry detergent compositions), hard surface chelating compositions, production of pulp and paper.    ADVANTAGE - The alpha-amylases have high stability and/or activity in the presence of a strong cheater, and have improved performance in various industrial applications.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a detergent composition comprising the alpha-amylase (S1) and a surfactant;    (2) a composition comprising the alpha-amylase (S1) and at least one enzyme selected from beta-amylase, cellulase (beta-glucosidase, cellobiohydrolase, and endoglucanase) glucoamylase, hemicellulase (comprising xylanase), isoamylase, isomerase, lipase, phytase, protease, and pullulanase;    (3) producing (M1) a fermentation product involving: (a) liquefying a starch-containing material with the alpha-amylase (S1) to produce a liquefied mash, (b) saccharifying the liquefied mash to produce fermentable sugars, and (c) fermenting the fermentable sugars in the presence of a fermenting organism;    (4) a nucleic acid sequence (N1) encoding the alpha-amylase (S1);    (5) a plasmid (P1) comprising the nucleic acid sequence (N1);    (6) a host cell (C1) comprising the nucleic acid sequence (N1) or the plasmid (P1);    (7) a transgenic plant, plant part or plant cell transformed with the nucleic acid sequence (N1); and    (8) preparation of the alpha-amylase (S1).