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The present invention relates to an acid-stable alpha amylase (asAA) derived from a strain of Aspergillus kawachi, which has granular starch hydrolyzing (GSH) activity, the heterologous expression of the asAA having GSH activity in filamentous fungal host cells and enzyme compositions including the

The present invention relates to an acid-stable alpha amylase (asAA) derived from a strain of Aspergillus kawachi, which has granular starch hydrolyzing (GSH) activity, the heterologous expression of the asAA having GSH activity in filamentous fungal host cells and enzyme compositions including the same which optionally include glucoamylase.

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It is claimed: 1. An enzyme composition comprising an acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity comprising the amino acid sequence of SEQ ID NO: 9. 2. The enzyme composition of claim 1 further comprising a glucoamylase. 3. The enzyme composition of claim

It is claimed: 1. An enzyme composition comprising an acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity comprising the amino acid sequence of SEQ ID NO: 9. 2. The enzyme composition of claim 1 further comprising a glucoamylase. 3. The enzyme composition of claim 1, wherein the acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity comprises the amino acid sequence of SEQ ID NO: 3. 4. The enzyme composition of claim 2, wherein the acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity comprises the amino acid sequence of SEQ ID NO: 3. 5. The enzyme composition of claim 1, wherein the asAA is obtained from heterologous expression in a filamentous fungal host cell. 6. The enzyme composition of claim 5, wherein the host cell is a Trichoderma cell. 7. A method of hydrolyzing granular starch comprising contacting a substrate containing granular starch with the enzyme composition of claim 1 at a temperature below the gelatinization temperature of the granular starch in the substrate and obtaining hydrolyzed starch, wherein at least 60% of the dry solids of the substrate are hydrolyzed. 8. The method according to claim 7, wherein the substrate is obtained from corn, wheat, sorghum, barley, rye or a combination thereof. 9. The method according to claim 8, wherein the substrate is corn. 10. The method according to claim 7, wherein the temperature is between 35 and 65�� C. 11. A method of increasing the granular starch hydrolyzing activity of a composition including glucoamylase comprising: combining (a) an acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity comprising the amino acid sequence of SEQ ID NO: 9 with a composition comprising glucoamylase; and obtaining an increase in the hydrolysis of granular starch compared to the hydrolysis of the granular starch under the same conditions in a composition including said glucoamylase. 12. The method according to claim 11, wherein the glucoamylase is obtained from Aspergillus, Trichoderma, Rhizopus or Humicola strains. 13. The method according to claim 11, wherein at least 90% of the hydrolyzed starch is glucose. 14. An isolated polypeptide having alpha amylase activity and granular starch hydrolyzing activity comprising the amino acid sequence SEQ ID NO: 9. 15. A method for producing an acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity in a filamentous fungal host cell comprising a) transforming a filamentous fungal host cell with a DNA construct including a promoter having transcriptional activity in the filamentous fungal host cell operably linked to a heterologous polynucleotide encoding an asaA having GSH activity and the comprising amino acid sequence of SEQ ID NO: 9; b) cultivating the transformed filamentous fungal host cell in a suitable culture medium to allow expression of said asAA; and c) producing the asAA. 16. The method according to claim 15 further comprising recovering the produced asAA. 17. The method according to claim 15, wherein the filamentous fungal host cell is a Trichoderma cell. 18. The method according to claim 17, wherein the Trichoderma cell is a T. reesei cell. 19. The method of claim 11, further comprising adding an acid stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity having the amino acid sequence of SEQ ID NO:3. 20. The enzyme composition of claim 2, wherein said glucoamylase is from Trichoderma reesei. 21. The enzyme composition of claim 1, further comprising at least one other enzyme selected from the group consisting of: a glucoamylase, an alpha amylase, a pullulanase, a cellulase, a protease, and a phytase. 22. The enzyme composition of claim 20, further comprising a protease. 23. The enzyme composition of claim 21, further comprising a phytase. 24. The enzyme composition of claim 1, wherein the composition is used in a process to hydrolyze granular starch. 25. The enzyme composition of claim 1, wherein the composition is used in a process to produce ethanol.