The present disclosure provides compositions and methods to increase the percentage of edited cells in a cell population when employing nucleic-acid guided editing, as well as automated multi-module instruments for performing these methods.

The disclosure includes compositions comprising synthetic zinc finger degrons, and their use with non-naturally occurring or engineered programmable nucleases. Compositions specifically targeting the engineered programmable nucleases for control of gene editing outcomes, and compositions, systems and method of use are further detailed.

Disclosed herein is a shuttle vector for use in E. coli and Bacilli including a high copy replication origin functional in E. coli, a low to medium copy ORI functional in Bacilli, and a synthetic constitutive regulatory nucleic acid conferring reduced constitutive expression compared to a respective starting regulatory nucleic acid molecule in a bacterial cell.

Aspects of the present disclosure relate to analog signal processing circuits and methods for cellular computation.

The present disclosure provides a nucleic acid sequence for regulating the transcription of a nucleic acid fragment of interest, wherein the nucleic acid sequence comprises at least 2 copies of TetO-operator sequences capable of binding to a transactivator rtTA regulatable by tetracycline or a derivative thereof, and 1 copy of minimal promoter sequence containing a TATA box sequence, and at least 1 copy of a CuO-operator sequence capable of binding to a transcription repressor CymR regulatable by cumate. The present disclosure also provides a vector and a host cell containing the nucleic acid sequence, and a method for inducing the expression of a nucleic acid fragment of interest in a host cell.

Methods and materials for genetically engineering methylotrophic yeast are provided.

This invention relates to the field of biotechnology or genetic engineering. Specifically, this invention relates to the field of gene expression. More specifically, this invention relates to novel substitution mutant receptors and their use in a nuclear receptor-based inducible gene expression system and methods of modulating the expression of a gene in a host cell for applications such as gene therapy, large scale production of proteins and antibodies, cell-based high throughput screening assays, functional genomics and regulation of traits in transgenic organisms.

A method of controlling the number of cells in a population of cells having silenced transcription of a target nucleic acid as a function of time includes recruiting a chromatin regulator (CR) to a site proximal to a transcription initiation site of the target nucleic acid to form a fraction of silenced cells in the population of cells. The chromatin regulator may be EED, KRAB, DNMT3, HDAC4, EZH2, REST, or a combination thereof.

Disclosed herein are compositions of transcription activator-like effectors transcription factors and methods of using said compositions for inducing gene expression of mammalian genes.

An autoinducer-2 (AI-2) molecular response-based starting element and an Escherichia coli (E. coli) dynamic regulation system and method constructed thereby are provided. A cell density-dependent starting element P.sub.J23119-LsrR-P.sub.lsrA based on an AI-2 molecular response is constructed. The element can be used to self-induce the expression of dCpf1, and crRNAs of different target genes are further assembled, such that the self-inducible element can be used for dCpf1-CRP to achieve the dynamic regulation of genes in a synthesis pathway. In the present disclosure, vectors pACYDuet-P.sub.J23119-LsrR-P.sub.lsrA-dCpf1-CRP, pRSFDuet-GFP-mCherry, and pETDuet-crRNA can be constructed to simultaneously achieve the transcriptional activation and inhibition of different genes. The construction method of recombinant E. coli in the present disclosure is simple and has promising application prospects.