Claims
- 1. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) contacting a Trehalose-6-Phosphate Synthase polypeptide with a test compound; and b) detecting the presence or absence of binding between the test compound and the Trehalose-6-Phosphate Synthase polypeptide, wherein binding indicates that the test compound is a candidate for an antibiotic.
- 2. The method of claim 1, wherein said Trehalose-6-Phosphate Synthase polypeptide is a fungal Trehalose-6-Phosphate Synthase polypeptide.
- 3. The method of claim 1, wherein said Trehalose-6-Phosphate Synthase polypeptide is a Magnaporthe Trehalose-6-Phosphate Synthase polypeptide.
- 4. The method of claim 1, wherein said Trehalose-6-Phosphate Synthase polypeptide is SEQ ID NO: 3.
- 5. A method for determining whether the antibiotic candidate of claim 1 has antifungal activity, further comprising: contacting a fungus or fungal cells with the antibiotic candidate and detecting the decrease in growth, viability, or pathogenicity of the fungus or fungal cells.
- 6. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) contacting a test compound with at least one polypeptide selected from the group consisting of: a polypeptide having at least ten consecutive amino acids of a fungal Trehalose-6-Phosphate Synthase, a polypeptide having at least 50% sequence identity with a fungal Trehalose-6-Phosphate Synthase, and a polypeptide having at least 10% of the activity thereof; and b) detecting the presence and/or absence of binding between the test compound and the polypeptide, wherein binding indicates that the test compound is a candidate for an antibiotic.
- 7. A method for determining whether the antibiotic candidate of claim 6 has antifungal activity, further comprising: contacting a fungus or fungal cells with the antibiotic candidate and detecting a decrease in growth, viability, or pathogenicity of the fungus or fungal cells.
- 8. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) contacting UDP-glucose and D-glucose-6-phosphate with a Trehalose-6-Phosphate Synthase; b) contacting UDP-glucose and D-glucose-6-phosphate with Trehalose-6-Phosphate Synthase and a test compound; and c) determining the change in concentration for at least one of the following: UDP, UDP-glucose, D-glucose-6-phosphate, and/or alpha, alpha′-trehalose-6-phosphate, wherein a change in concentration for any of the above substances between steps (a) and (b) indicates that the test compound is a candidate for an antibiotic.
- 9. The method of claim 8, wherein the Trehalose-6-Phosphate Synthase is a fungal Trehalose-6-Phosphate Synthase.
- 10. The method of claim 8, wherein the Trehalose-6-Phosphate Synthase is a Magnaporthe Trehalose-6-Phosphate Synthase.
- 11. The method of claim 8, wherein the Trehalose-6-Phosphate Synthase is SEQ ID NO: 3.
- 12. A method for determining whether the antibiotic candidate of claim 8 has antifungal activity, further comprising: contacting a fungus or fungal cells with the antibiotic candidate and detecting a decrease in growth, viability, or pathogenicity of the fungus or fungal cells.
- 13. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) contacting UDP and alpha, alpha′-trehalose-6-phosphate with a Trehalose-6-Phosphate Synthase; b) contacting UDP and alpha, alpha′-trehalose-6-phosphate with a Trehalose-6-Phosphate Synthase and a test compound; and c) determining the change in concentration for at least one of the following: UDP, UDP-glucose, D-glucose-6-phosphate, and/or alpha, alpha′-trehalose-6-phosphate, wherein a change in concentration for any of the above substances between steps (a) and (b) indicates that the test compound is a candidate for an antibiotic.
- 14. The method of claim 13, wherein the Trehalose-6-Phosphate Synthase is a fungal Trehalose-6-Phosphate Synthase.
- 15. The method of claim 13, wherein the Trehalose-6-Phosphate Synthase is a Magnaporthe Trehalose-6-Phosphate Synthase.
- 16. The method of claim 13, wherein the Trehalose-6-Phosphate Synthase is SEQ ID NO: 3.
- 17. A method for determining whether the antibiotic candidate of claim 13 has antifungal activity, further comprising: contacting a fungus or fungal cells with the antibiotic candidate and detecting a decrease in growth, viability, or pathogenicity of the fungus or fungal cells.
- 18. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) contacting UDP-glucose and D-glucose-6-phosphate with a polypeptide selected from the group consisting of: a polypeptide having at least 50% sequence identity with Trehalose-6-Phosphate Synthase, a polypeptide having at least 50% sequence identity with a Trehalose-6-Phosphate Synthase and having at least 10% of the activity thereof, and a polypeptide comprising at least 100 consecutive amino acids of a Trehalose-6-Phosphate Synthase; b) contacting UDP-glucose and D-glucose-6-phosphate with said polypeptide and a test compound; and c) determining the change in concentration for at least one of the following: UDP, UDP-glucose, D-glucose-6-phosphate, and/or alpha, alpha′-trehalose-6-phosphate, wherein a change in concentration for any of the above substances between steps (a) and (b) indicates that the test compound is a candidate for an antibiotic.
- 19. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) contacting UDP and alpha, alpha′-trehalose-6-phosphate with a polypeptide selected from the group consisting of: a polypeptide having at least 50% sequence identity with a Trehalose-6-Phosphate Synthase, a polypeptide having at least 50% sequence identity with a Trehalose-6-Phosphate Synthase and at least 10% of the activity thereof, and a polypeptide comprising at least 100 consecutive amino acids of a Trehalose-6-Phosphate Synthase; b) contacting UDP and alpha, alpha′-trehalose-6-phosphate, with said polypeptide and a test compound; and c) determining the change in concentration for at least one of the following: UDP, UDP-glucose, D-glucose-6-phosphate, and/or alpha, alpha′-trehalose-6-phosphate, wherein a change in concentration for any of the above substances between steps (a) and (b) indicates that the test compound is a candidate for an antibiotic.
- 20. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) measuring the expression of a Trehalose-6-Phosphate Synthase in a cell, cells, tissue, or an organism in the absence of a test compound; b) contacting the cell, cells, tissue, or organism with the test compound and measuring the expression of the Trehalose-6-Phosphate Synthase in the cell, cells, tissue, or organism; and c) comparing the expression of Trehalose-6-Phosphate Synthase in steps (a) and (b), wherein a lower expression in the presence of the test compound indicates that the test compound is a candidate for an antibiotic.
- 21. The method of claim 20, wherein the cell, cells, tissue, or organism is, or is derived from a fungus.
- 22. The method of claim 20, wherein the cell, cells, tissue, or organism is, or is derived from a Magnaporthe fungus or fungal cell.
- 23. The method of claim 20, wherein the Trehalose-6-Phosphate Synthase is SEQ ID NO: 3.
- 24. The method of claim 20, wherein the expression of Trehalose-6-Phosphate Synthase is measured by detecting TPS1 mRNA.
- 25. The method of claim 20, wherein the expression of Trehalose-6-Phosphate Synthase is measured by detecting Trehalose-6-Phosphate Synthase polypeptide.
- 26. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) providing cells having one form of a Trehalose-6-Phosphate Synthase gene, and providing comparison cells having a different form of a Trehalose-6-Phosphate Synthase gene; and b) contacting the cells and the comparison cells with a test compound and determining the growth of the cells and comparison cells in the presence of the test compound, wherein a difference in growth between the cells and the comparison cells in the presence of the compound indicates that the compound is a candidate for an antibiotic.
- 27. The method of claim 26, wherein the cells and the comparison cells are fungal cells.
- 28. The method of claim 26, wherein the cells and the comparison cells are Magnaporthe cells.
- 29. The method of claim 26, wherein the form and the different form of the Trehalose-6-Phosphate Synthase are fungal Trehalose-6-Phosphate Synthases.
- 30. The method of claim 26, wherein at least one of the protein forms is a Magnaporthe Trehalose-6-Phosphate Synthase.
- 31. The method of claim 26, wherein the form and the different form of the Trehalose-6-Phosphate Synthase are non-fungal Trehalose-6-Phosphate Synthases.
- 32. The method of claim 26, wherein one form of the Trehalose-6-Phosphate Synthase is a fungal Trehalose-6-Phosphate Synthase, and the different form is a non-fungal Trehalose-6-Phosphate Synthase.
- 33. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) providing cells having one form of a Trehalose-6-Phosphate Synthase gene, and providing comparison cells having a different form of a Trehalose-6-Phosphate Synthase gene; and b) contacting the cells and the comparison cells with a test compound and determining the pathogenicity of the cells and comparison cells in the presence of the test compound, wherein a difference in pathogenicity between the cells and the comparison cells in the presence of the compound indicates that the compound is a candidate for an antibiotic.
- 34. The method of claim 33, wherein the cells and the comparison cells are fungal cells.
- 35. The method of claim 33, wherein the cells and the comparison cells are Magnaporthe cells.
- 36. The method of claim 33, wherein the form and the different form of the Trehalose-6-Phosphate Synthase are fungal Trehalose-6-Phosphate Synthases.
- 37. The method of claim 33, wherein at least one of the protein forms is a Magnaporthe Trehalose-6-Phosphate Synthase.
- 38. The method of claim 33, wherein the form and the different form of the Trehalose-6-Phosphate Synthase are non-fungal Trehalose-6-Phosphate Synthases.
- 39. The method of claim 33, wherein one form of the Trehalose-6-Phosphate Synthase is a fungal Trehalose-6-Phosphate Synthase, and the different form is a non-fungal Trehalose-6-Phosphate Synthase.
- 40. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) providing cells having one form of a gene in the trehalose biochemical and/or genetic pathway and providing comparison cells having a different form of the gene; b) contacting the cells and the comparison cells with a test compound; and c) determining the growth of the cells and the comparison cells in the presence of the test compound, wherein a difference in growth between the cells and the comparison cells in the presence of the test compound indicates that the test compound is a candidate for an antibiotic.
- 41. The method of claim 40, wherein the cells and the comparison cells are fungal cells.
- 42. The method of claim 40, wherein the cells and the comparison cells are Magnaporthe cells.
- 43. The method of claim 40, wherein the form and the different form of the trehalose biosynthesis gene are fungal trehalose biosynthesis genes.
- 44. The method of claim 40, wherein at least one of the protein forms is a Magnaporthe trehalose biosynthesis gene.
- 45. The method of claim 40, wherein the form and the different form of the trehalose biosynthesis genes are non-fungal trehalose biosynthesis genes.
- 46. The method of claim 40, wherein one form of the trehalose biosynthesis gene is a fungal trehalose biosynthesis gene, and the different form is a non-fungal trehalose biosynthesis gene.
- 47. A method for determining whether the antibiotic candidate of claim 40 has antifungal activity, further comprising: contacting a fungus or fungal cells with the antibiotic candidate and detecting a decrease in growth, viability, or pathogenicity of the fungus or fungal cells, wherein a decrease in growth, viability, or pathogenicity of the fungus or fungal cells indicates that the antibiotic candidate has antifungal activity.
- 48. A method for identifying a test compound as a candidate for an antibiotic, comprising:
a) providing cells having one form of a gene in the trehalose biochemical and/or genetic pathway and providing comparison cells having a different form of the gene; b) contacting the cells and the comparison cells with a test compound; and c) determining the pathogenicity of the cells and the comparison cells in the presence of the test compound, wherein a difference in pathogenicity between the cells and the comparison cells in the presence of the test compound indicates that the test compound is a candidate for an antibiotic.
- 49. The method of claim 48, wherein the cells and the comparison cells are fungal cells.
- 50. The method of claim 48, wherein the cells and the comparison cells are Magnaporthe cells.
- 51. The method of claim 48, wherein the form and the different form of the trehalose biosynthesis gene are fungal trehalose biosynthesis genes.
- 52. The method of claim 48, wherein at least one of the protein forms is a Magnaporthe trehalose biosynthesis gene.
- 53. The method of claim 48, wherein the form and the different form of the trehalose biosynthesis genes are non-fungal trehalose biosynthesis genes.
- 54. The method of claim 48, wherein one form of the trehalose biosynthesis gene is a fungal trehalose biosynthesis gene, and the different form is a non-fungal trehalose biosynthesis gene.
- 55. A method for determining whether the antibiotic candidate of claim 48 has antifungal activity, further comprising: contacting a fungus or fungal cells with the antibiotic candidate and detecting a decrease in growth, viability, or pathogenicity of the fungus or fungal cells, wherein a decrease in growth, viability, or pathogenicity of the fungus or fungal cells indicates that the antibiotic candidate has antifungal activity.
- 56. An isolated nucleic acid comprising a nucleotide sequence that encodes a polypeptide of SEQ ID NO: 3.
- 57. The nucleic acid of claim 56, comprising the nucleotide sequence of SEQ ID NO: 1.
- 58. An expression cassette comprising the nucleic acid of claim 57.
- 59. The isolated nucleic acid of claim 56, comprising a nucleotide sequence with at least 50% to at least 95% sequence identity to SEQ ID NO: 1.
- 60. A polypeptide consisting essentially of the amino acid sequence of SEQ ID NO: 3.
- 61. A polypeptide comprising the amino acid sequence of SEQ ID NO: 3.
RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional Application No. 60/424,868, filed Nov. 8, 2002. The foregoing patent application is incorporated in its entirety by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60424868 |
Nov 2002 |
US |