The present invention relates to a cellular transport system for bringing a sulfonic acid construct which carries a cargo into a cell and releasing the cargo in the cell's cytoplasm, the cellular transport system comprising: (i) a sulfonate transporter located in the cytoplasm membrane of the cell wherein said sulfonate transporter is capable of transporting said sulfonic acid construct across the cytoplasm membrane into the cytoplasm; (ii) a γ-glutamyl transferase (GGT; EC 2.3.2.2) which is modified to be located in the cytoplasm of the cell, wherein said γ-glutamyl transferase is capable of hydrolyzing said sulfonic acid construct so as to release the cargo. Moreover, the present invention relates to the use of a cellular transport system for bringing a sulfonic acid construct which contains a cargo into a cell and releasing the cargo in the cell's cytoplasm. Further, the present invention relates to a γ-glutamyl transferase for hydrolyzing a sulfonic acid construct which contains a cargo.

The present invention is related to a polypeptide comprising an amino acid sequence, whereby the amino acid sequence of the polypeptide is at least 80% identical to a stretch of consecutive amino acids of the region of HPGGT comprising an amino acid sequence corresponding to SEQ.ID.No. 1, whereby such region is defined by (a) amino acid positions 150 to 200 of the amino acid sequence according to SEQ.ID.No.1, or (b) amino acid positions 410 to 480 of the amino acid sequence according to SEQ.ID.No.1, and
whereby the polypeptide is suitable to elicit an immune response which is capable of inhibiting the catalytic activity of HPGGT.

The invention provides protease genes which are regulated in a specific manner during curing of tobacco plants material and which affect the flavour of cured tobacco.

A pegylated, circularly permuted construct of the CapD enzyme (a gamma glutamyl transferase enzyme acting as a hydrolase specific to poly-γ-D-glutamic acid) is used to treat anthrax and other bacterial infections, including but not limited to infection with strains that are resistant to available antibiotics.

The present invention relates to a halophilic Bacillus polyfermenticus KMU01 strain producing salt-tolerant gamma-glutamyl transpeptidase, and the halophilic Bacillus polyfermenticus KMU01 strain according to the present invention (KCTC11751BP) producing a halophilic gamma-glutamyl transpeptidase, wherein, when food is fermented using the strain of the present invention, it can be utilized in foods with high salt concentration, and fermented foods having excellent flavor and various peptides can be prepared by high enzyme activity that decomposes protein binding.

The present invention relates to a composition containing bioconverted black soybean powder of which various biologically active functions are improved by treating whole soy milk with an enzyme solution derived from Bacillus polyfermenticus strain. The present invention has identified that low-molecular-weight functional amino acids and peptides are formed by treating whole soy milk with a fermentation solution in which various peptide synthetases and lyases derived from a Bacillus polyfermenticus strain are mixed, and that bioconverted black soybean powder has functional effects such as antioxidant activity and behavioral disorder improvement, and thus a composition for alleviating behavioral disorders, containing bioconverted black soybean powder as an active ingredient, is provided.

The present disclosure concerns a method for producing peptides such as glutathione and a microorganism that can be used for such method. One or more embodiments of the first aspect of the present disclosure concern a method for producing peptides such as glutathione comprising culturing a prokaryotic microbial strain in which the expression levels of one or more genes selected from among the gshA gene, the gshB gene, and the gshF gene are enhanced, compared with the expression levels thereof in the wild-type strain thereof in a medium in which the total concentration of cysteine and cystine is 0.5 g/l or lower. The second aspect of the present disclosure concerns a microorganism comprising disruptions of the γ-glutamyltransferase gene and the glutathione reductase gene and exhibiting the enhanced expression levels of the gshA gene and the gshB or gshF gene.

It is an object of the present invention to provide a practical means of producing cysteine from glutathione that is also suitable for use in the field of foods. Cysteine is produced from glutathione by a first step of producing cysteinylglycine by the action of a γ-glutamyl peptidase derived from a microorganism on reduced glutathione; and a second step of producing cysteine by the action of an acid protease derived from a microorganism on the cysteinylglycine.

The present invention relates to a cellular transport system for bringing a sulfonic acid construct which carries a cargo into a cell and releasing the cargo in the cell's cytoplasm, the cellular transport system comprising: (i) a sulfonate transporter located in the cytoplasm membrane of the cell wherein said sulfonate transporter is capable of transporting said sulfonic acid construct across the cytoplasm membrane into the cytoplasm; (ii) a -glutamyl transferase (GGT; EC 2.3.2.2) which is modified to be located in the cytoplasm of the cell, wherein said -glutamyl transferase is capable of hydrolyzing said sulfonic acid construct so as to release the cargo. Moreover, the present invention relates to the use of a cellular transport system for bringing a sulfonic acid construct which contains a cargo into a cell and releasing the cargo in the cell's cytoplasm. Further, the present invention relates to a -glutamyl transferase for hydrolyzing a sulfonic acid construct which contains a cargo.

A method for improving the extensibility of a dough comprising a) adding a gamma glutamyl transpeptidase to flour or to a dough comprising a flour; and b) making the dough. The gamma glutamyl transpeptidase may be obtainable from Bacillus licheniformis and from Bacillus horikoshii.