Polypeptides having cellobiohydrolase I activity and polynucleotides encoding same
The present invention relates to polypeptides having cellobiohydrolase I activity and polynucleotides having a nucleotide sequence which encodes for the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the nucleic acid constructs as well as methods for producing and using the polypeptides.
1. A nucleic acid construct comprising a polynucleotide encoding a polypeptide having cellobiohydrolase I activity, wherein the polynucleotide is operably linked to one or more heterologous control sequences that direct the production of the polypeptide in an expression host, and wherein the polypeptide has at least 80% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
2. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity has at least 85% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
3. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity has at least 90% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
4. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity has at least 95% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
5. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity has at least 97% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
6. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity has at least 99% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
7. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity comprises the sequence of amino acids 1 to 529 of SEQ ID NO: 4.
8. The nucleic acid construct of claim 1 , wherein the polypeptide having cellobiohydrolase I activity is a variant comprising a substitution, deletion, and/or insertion of one or more amino acids of amino acids 1 to 529 of SEQ ID NO: 4.
9. A recombinant expression vector comprising the nucleic acid construct of claim 1 .
10. A recombinant host cell comprising the nucleic acid construct of claim 1 .
11. A method of producing a polypeptide having cellobiohydrolase I activity, said method comprising: (a) cultivating the recombinant host cell of claim 10 under conditions conducive for production of the polypeptide; and (b) recovering the polypeptide.
12. A method of producing a polypeptide having cellobiohydrolase I activity, said method comprising: (a) cultivating a recombinant host cell comprising a polynucleotide encoding a polypeptide having cellobiohydrolase I activity under conditions conducive for production of the polypeptide; and (b) recovering the polypeptide; wherein the polypeptide has at least 80% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
13. The method of claim 12 , wherein the polypeptide having cellobiohydrolase I activity has at least 95% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
14. The method of claim 12 , wherein the polypeptide having cellobiohydrolase I activity comprises the sequence of amino acids 1 to 529 of SEQ ID NO: 4.
15. A method for producing ethanol from biomass, said method comprising:
(a) contacting the biomass with the polypeptide having cellobiohydrolase I activity, wherein the polypeptide has at least 80% sequence identity with 1 to 529 of SEQ ID NO: 4; (b) converting the degraded biomass to ethanol; and (c) recovering the ethanol.
16. The method of claim 15 , wherein the polypeptide having cellobiohydrolase I activity has at least 85% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
17. The method of claim 15 , wherein the polypeptide having cellobiohydrolase I activity has at least 90% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
18. The method of claim 15 , wherein the polypeptide having cellobiohydrolase I activity has at least 95% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
19. The method of claim 15 , wherein the polypeptide having cellobiohydrolase I activity has at least 97% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
20. The method of claim 15 , wherein the polypeptide having cellobiohydrolase I activity has at least 99% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
21. The method of claim 15 , wherein the polypeptide having cellobiohydrolase I activity comprises the sequence of amino acids 1 to 529 of SEQ ID NO: 4.
22. A recombinant host cell transformed with a nucleic acid construct or expression vector comprising a polynucleotide encoding a polypeptide having cellobiohydrolase I activity, wherein the polypeptide having cellobiohydrolase I activity has at least 80% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
23. The recombinant host cell of claim 22 , wherein the polypeptide having cellobiohydrolase I activity has at least 95% sequence identity with amino acids 1 to 529 of SEQ ID NO: 4.
24. The recombinant host cell of claim 22 , wherein the polypeptide having cellobiohydrolase I activity comprises the sequence of amino acids 1 to 529 of SEQ ID NO: 4.