Abstract: The invention provides isolated nucleic acid molecules encoding polypeptides having 2,5-DKG permease activity, and oligonucleotides therefrom. The isolated nucleic acid molecules can be expressed in appropriate bacterial cells to enhance the production of 2-KLG, which can subsequently be converted to ascorbic acid. Further provided are isolated polypeptides having 2,5-DKG permease acitivity, immunogenic peptides therefrom, and antibodies specific therefor. The invention also provides methods of identifying novel 2,5-DKG permeases.

Abstract: The invention provides isolated nucleic acid molecules encoding polypeptides having 2,5-DKG permease activity, and oligonucleotides therefrom. The isolated nucleic acid molecules can be expressed in appropriate bacterial cells to enhance the production of 2-KLG, which can subsequently be converted to ascorbic acid. Further provided are isolated polypeptides having 2,5-DKG permease activity, immunogenic peptides therefrom, and antibodies specific therefor. The invention also provides methods of identifying novel 2,5-DKG permeases.

Abstract: The invention provides isolated nucleic acid molecules encoding polypeptides having 2,5-DKG permease activity, and oligonucleotides therefrom. The isolated nucleic acid molecules can be expressed in appropriate bacterial cells to enhance the production of 2-KLG, which can subsequently be converted to ascorbic acid. Further provided are isolated polypeptides having 2,5-DKG permease activity, immunogenic peptides therefrom, and antibodies specific therefor. The invention also provides methods of identifying novel 2,5-DKG permeases.

Abstract: The invention provides isolated nucleic acid molecules encoding polypeptides having 2,5-DKG permease activity, and oligonucleotides therefrom. The isolated nucleic acid molecules can be expressed in appropriate bacterial cells to enhance the production of 2-KLG, which can subsequently be converted to ascorbic acid. Further provided are isolated polypeptides having 2,5-DKG permease acitivity, immunogenic peptides therefrom, and antibodies specific therefor. The invention also provides methods of identifying novel 2,5-DKG permeases.

Abstract: A method for enhancing a host cell's biosynthetic production of 2-KLG is described. Such method comprises selecting a host cell that has an at least partially intracellular synthetic pathway which utilizes 2,5-DKG to produce 2-KLG; increasing the transport of said 2,5-DKG into said host cell while maintaining the integrity of the host cell; culturing the host cell to produce said 2,5-DKG; and producing 2-KLG. The transport of the 2,5-DKG is increased by transforming into the host cell DNA encoding for one or more enzymes transporting the 2,5-DKG into the host cell.

Abstract: The invention provides isolated nucleic acid molecules encoding polypeptides having 2,5-DKG permease activity, and oligonucleotides therefrom. The isolated nucleic acid molecules can be expressed in appropriate bacterial cells to enhance the production of 2-KLG, which can subsequently be converted to ascorbic acid. Further provided are isolated polypeptides having 2,5-DKG permease activity, immunogenic peptides therefrom, and antibodies specific therefor. The invention also provides methods of identifying novel 2,5-DKG permeases.

Abstract: The present invention relates to screening methods for the identification of compounds and compositions useful as novel antibiotics and antibacterial agents. In particular, the present invention relates to methods utilizing two-component regulatory switches which includes regulatory switches comprising a prokaryotic enzyme. Histidine protein kinase is a regulatory switch that is activated to autophosphorylate by a signal transduction mechanism. The invention also relates to methods of identifying inhibitors of enzyme activity particularly in bacterial cells. A high-throughput assay system useful in the large-scale screening of protein kinase inhibitors is also provided. The invention further provides the phosphorylation of SpoOF including a histidine.

Abstract: The present invention relates to screening methods for the identification of compounds and compositions useful as novel antibiotics and antibacterial agents. In particular, the present invention relates to methods utilizing two-component regulatory switches, for example, those comprising a prokaryotic enzyme such as histidine protein kinase that is activated to autophosphorylate by a signal transduction mechanism. The invention also relates to methods of identifying inhibitors of enzyme activity, particularly in bacterial cells. In particular, a high-throughput assay system useful in the large-scale screening of protein kinase inhibitors is disclosed.