No 7, respectively; or displays at least 80% homology with one or more of these amino acid sequences; and displays immunological cross reactivity with {HEAD ~ an antibody} raised against an α amylase having one of these amino acid sequences; and is encoded by a DNA sequence which hybridizes with the same probe as a DNA sequence encoding {TAIL ~ an α amylase} having one of these amino acid sequences; in which variant: 
No 7 , respectively ; or displays at least 80 % homology with one or more of these amino acid sequences ; and displays immunological cross reactivity with { HEAD ~ an antibody } raised against an α amylase having one of these amino acid sequences ; and is encoded by a DNA sequence which hybridizes with the same probe as a DNA sequence encoding { TAIL ~ an α amylase } having one of these amino acid sequences ; in which variant :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH