A method of producing para-hydroxybenzoic acid (pHBA) or a derivative thereof includes culturing the recombinant microorganism in a fermentation broth, wherein said recombinant microorganism comprising a genetically engineered pathway expressing at least one nucleic acid sequence encoding a polypeptide selected from: an exogenous chorismate pyruvate lyase of EC 5.4.4.2 or EC 4.1.3.40; an exogenous 3-deoxy-D-arabino-heptulosonate-7-phosphate (DAHP) synthase of EC 4.1.2.15, or EC 2.5.1.54; an exogenous shikimate kinase of EC 2.7.1.71; or an exogenous 3-dehydroquinate dehydratase (DHQ) of EC 4.2.1.10; adding a carbon source to the fermentation broth; and isolating the pHBA from the fermentation broth.

A method, composition, and kit for treating a malarial infection in a subject by using an enzyme conjugate comprising a variant cystathione-gamma-lyase and a targeting ligand which binds to erythrocytes infected with Plasmodium pathogens. The variant cystathione-gamma-lyase has methioninase activity. Also disclosed is a method of treating Plasmodium-infected blood by exposing the infected blood with the enzyme conjugate.

The present application relates to: a composition for diagnosing a Helicobacter pylori-associated disease, the composition comprising a preparation for measuring the expression amount of a gene whose expression is increased or decreased by Helicobacter pylori infection; and a use thereof.

Methods and compositions relating to the engineering of an improved protein with homocyst(e)inase enzyme activity are described. For example, there are disclosed modified cystathionine-γ-lyase (CGL) enzymes comprising one or more amino acid substitutions and capable of degrading homocyst(e)ine. Furthermore, provided are compositions and methods for the treatment of homocystinuria or hyperhomocysteinemia with homocyst(e)ine depletion using the disclosed enzymes or nucleic acids.

A method, composition, and kit for treating a malarial infection in a subject by using an enzyme conjugate comprising a variant cystathione-gamma-lyase and a targeting ligand which binds to erythrocytes infected with Plasmodium pathogens. The variant cystathione-gamma-lyase has methioninase activity. Also disclosed is a method of treating Plasmodium-infected blood by exposing the infected blood with the enzyme conjugate.

Methods and compositions related to the engineering of a protein with L-cyst(e)ine degrading enzyme activity are described. For example, disclosed are modified cystathionine--lyases comprising one or more amino acid substitutions and capable of degrading L-cyst(e)ine. Furthermore, compositions and methods are provided for the treatment of cancer and cystinuria using the disclosed modified enzymes or nucleic acids encoding said enzymes.

Methods and compositions related to the engineering of a protein with L-cyst(e)ine degrading enzyme activity are described. For example, in certain aspects there may be disclosed a modified cystathionine--lyase comprising one or more amino acid substitutions and capable of degrading L-cyst(e)ine. Furthermore, certain aspects of the invention provide compositions and methods for the treatment of cancer with L-cyst(e)ine using the disclosed proteins or nucleic acids.

Methods and compositions relating to the engineering of an improved protein with methionine--lyase enzyme activity are described. For example, in certain aspects there may be disclosed a modified cystathionine--lyase (CGL) comprising one or more amino acid substitutions and capable of degrading methionine. Furthermore, certain aspects of the invention provide compositions and methods for the treatment of cancer with methionine depletion using the disclosed proteins or nucleic acids.

Methods and compositions related to the engineering of a protein with L-cyst(e)ine degrading enzyme activity are described. For example, in certain aspects there may be disclosed a modified cystathionine--lyase comprising one or more amino acid substitutions and capable of degrading L-cyst(e)ine. Furthermore, certain aspects of the invention provide compositions and methods for the treatment of cancer with L-cyst(e)ine using the disclosed proteins or nucleic acids.

Methods and compositions related to the engineering of a protein with L-cyst(e)ine degrading enzyme activity are described. For example, in certain aspects there may be disclosed a modified cystathionine--lyase comprising one or more amino acid substitutions and capable of degrading L-cyst(e)ine. Furthermore, certain aspects of the invention provide compositions and methods for the treatment of cancer with L-cyst(e)ine using the disclosed proteins or nucleic acids.