Figure 1. α-Amylases used in the present study^a.

^aThe list involves: (i) the members of the newly proposed GH13 subfamily xy represented by the “α-amylase” from Bacillus megaterium BmaN1 (Nos 1–27) and its closely related homologues (Nos 28–34) - probably intermediates between BmaN1 and the α-amylase from Bacillus aquimaris BaqA - caught by BLAST; (ii) the members of the recently proposed GH13 subfamily xx¹⁹ represented by the BaqA (Nos 35–39); (iii) representatives of the individual GH13 subfamilies with the specificity of α-amylases - subfamilies GH13_1, 5, 6, 7, 15, 19, 24, 27, 28, 32, 36 and 37 (Nos 40–63); and (iv) the currently unassigned cyclomaltodextrinase (GH13_??; No. 64); for details, see the Materials and methods section. ^b,cAccession numbers from the UniProt (UniParc) and GenBank sequence databases, respectively. ^dThe length of the entire amino acid sequence of the protein. ^eThe length of the polypeptide chain spanning the segment from the beginning of the CSR-VI (strand β2) to the end of the CSR-VII (strand β8). ^fThe GH13 subfamily (if available).