The invention comprises a photoautotrophic organism, generally having simpler nutritional requirements than heterotrophic organisms, utilized as a chassis for the heterologous expression and function of enzymes, or derivatives of said enzymes, that show activity toward the degradation/detoxification of toxins known to be associated with and specific to harmful algal blooms. As an example, a cyanobacterial strain (Synechocystis sp. PCC 6803) modified to express Sphingomonas sp. USTB-05 MlrA enzyme functionality, showing the capability of degrading microcystins (results shown here) and nodularins, is presented. Under modelled natural conditions, results indicate that heterologous enzymatic activity against microcystin-LR is more stable over time when utilizing a photoautotrophic chassis in comparison to use of a heterotrophic bacterial strain. In addition, both the viability and cell density of the photoautotrophic host is maintained for a significantly longer period of time, compared to a heterotrophic host.

The invention comprises a photoautotrophic organism, generally having simpler nutritional requirements than heterotrophic organisms, utilized as a chassis for the heterologous expression and function of enzymes, or derivatives of said enzymes, that show activity toward the degradation/detoxification of toxins known to be associated with and specific to harmful algal blooms. As an example, a cyanobacterial strain (Synechocystis sp. PCC 6803) modified to express Sphingomonas sp. USTB-05 MlrA enzyme functionality, showing the capability of degrading microcystins (results shown here) and nodularins, is presented. Under modelled natural conditions, results indicate that heterologous enzymatic activity against microcystin-LR is more stable over time when utilizing a photoautotrophic chassis in comparison to use of a heterotrophic bacterial strain. In addition, both the viability and cell density of the photoautotrophic host is maintained for a significantly longer period of time, compared to a heterotrophic host.

This invention relates to recombinant Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) arrays and recombinant nucleic acid constructs encoding Type I-E CASCADE complexes as well as plasmids, retroviruses and bacteriophage comprising the same.

The present invention relates to a host cell, which comprises under the control of a heterologous promoter a polynucleotide comprising a nucleotide sequence encoding a polypeptide capable of synthesizing a polysaccharide consisting of a dimeric repeating unit as well as to a vaccine composition comprising such host cell. Furthermore, either such host cell or a polypeptide expressed by such host cell is used for the production of a polysaccharide consisting of a dimeric repeating unit which may be used as a glycoconjugate vaccine.

The present invention relates to a host cell, which comprises under the control of a heterologous promoter a polynucleotide comprising a nucleotide sequence encoding a polypeptide capable of synthesizing a polysaccharide consisting of a dimeric repeating unit as well as to a vaccine composition comprising such host cell. Furthermore, either such host cell or a polypeptide expressed by such host cell is used for the production of a polysaccharide consisting of a dimeric repeating unit which may be used as a glycoconjugate vaccine.

The present invention provides polynucleotide constructs with at least one disruption or tearing responsive promoter and at least one sequence encoding a fiber-forming protein. The invention further provides a cell comprising such a construct as well as a biofilm containing a plurality of such cells. A biofilm comprising cells containing the construct of the present invention are capable of forming protein fibers in response to a disruption stimulus that are useful, for example, in preparation of self-healing fabrics and textiles.

The present invention provides polynucleotide constructs with at least one disruption or tearing responsive promoter and at least one sequence encoding a fiber-forming protein. The invention further provides a cell comprising such a construct as well as a biofilm containing a plurality of such cells. A biofilm comprising cells containing the construct of the present invention are capable of forming protein fibers in response to a disruption stimulus that are useful, for example, in preparation of self-healing fabrics and textiles.

Disclosed herein are new strains of Propionibacterium and methods for the biosynthetic production of propionic acid.

Disclosed herein are new strains of Propionibacterium and methods for the biosynthetic production of propionic acid.

Provided are: a method for preparing a DNA unit composition in which the mol number of a plurality of DNA units is more uniform, and a method for creating concatenated DNA. The method for preparing a DNA unit composition has: a step for preparing solutions which contain a plurality of DNA units to which an added sequence is linked, and preparing a solution for each type of DNA unit; and a step for, after preparing each of the solutions, measuring the concentration of the DNA unit in each of the solutions in a state where the added sequence is linked to the DNA unit, and on the basis of the results thereof, fractionating each of the solutions and making the mol number of the DNA unit in each of the solutions closer to being identical to one another.