The present invention relates to the use of one or more glycosidases in the process for the production and/or purification of a produced desired oligosaccharide. The process is preferably a microbial fermentation process using a host microorganism, which may also comprise nucleic acids expressing sugar catabolic pathway proteins suitable for the degradation of saccharides otherwise hindering the purification of the desired oligosaccharide.

The present invention relates to the use of one or more glycosidases in the process for the production and/or purification of a produced desired oligosaccharide. The process is preferably a microbial fermentation process using a host microorganism, which may also comprise nucleic acids expressing sugar catabolic pathway proteins suitable for the degradation of saccharides otherwise hindering the purification of the desired oligosaccharide.

The present disclosure relates to methods and compositions for nuclease-mediated plasmid integration into the genome of a population of live cells, as well as automated multi-module instruments for performing these methods and using these compositions.

The present disclosure relates to methods and compositions for nuclease-mediated plasmid integration into the genome of a population of live cells, as well as automated multi-module instruments for performing these methods and using these compositions.

The present invention is directed to methods and compositions for targeted gene silencing that provide the ability to not only repress expression but to modulate the repression of expression of one or more target genes. In one aspect, a recombinant nucleic acid molecule is provided comprising a nucleotide sequence encoding a subset of CRISPR-cas polypeptides, or functional fragments thereof, from a type-I CRISPR-cas system. In some aspects, a recombinant nucleic acid of the invention comprises a nucleotide sequence encoding three or more Type I Cascade polypeptides having substantial identity to a type I Cascade polypeptide.

The present invention is directed to methods and compositions for targeted gene silencing that provide the ability to not only repress expression but to modulate the repression of expression of one or more target genes. In one aspect, a recombinant nucleic acid molecule is provided comprising a nucleotide sequence encoding a subset of CRISPR-cas polypeptides, or functional fragments thereof, from a type-I CRISPR-cas system. In some aspects, a recombinant nucleic acid of the invention comprises a nucleotide sequence encoding three or more Type I Cascade polypeptides having substantial identity to a type I Cascade polypeptide.

Provided are a fructose-4-epimerase variant having tagatose conversion activity, and a method of producing tagatose using the same.

Direct detection of mutagenesis in prokaryotes by reversion of an inactivating mutation (reversion mutation assay), producing a quantitative signal for in vivo mutagenesis, may greatly reduce the amount of test chemicals and labor involved in these assays. Further, transcriptional coupling of β-lactamase reversion and GFP, translational fusion between β-lactamase and GFP with stop codon in GFP, and a novel dual reporter to monitor continuous mutagenesis may be used in methods described herein.

Direct detection of mutagenesis in prokaryotes by reversion of an inactivating mutation (reversion mutation assay), producing a quantitative signal for in vivo mutagenesis, may greatly reduce the amount of test chemicals and labor involved in these assays. Further, transcriptional coupling of β-lactamase reversion and GFP, translational fusion between β-lactamase and GFP with stop codon in GFP, and a novel dual reporter to monitor continuous mutagenesis may be used in methods described herein.

The present invention provides engineered sucrose phosphorylase (SP) enzymes, polypeptides having SP activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing SP enzymes are also provided. The present invention further provides compositions comprising the SP enzymes and methods of using the engineered SP enzymes. The present invention finds particular use in the production of pharmaceutical compounds.