A manually curated compendium of expression profiles for the microbial cell factory Corynebacterium glutamicum.

Corynebacterium glutamicum is the major host for the industrial production of amino acids and has become one of the best studied model organisms in microbial biotechnology. Rational strain construction has led to an improvement of producer strains and to a variety of novel producer strains with a broad substrate and product spectrum. A key factor for the success of these approaches is detailed knowledge of transcriptional regulation in C.

Characterization of the synthetic biology-inspired implementation of a materials-based positive feedback loop.

The translation of engineering designs to materials sciences by means of synthetic biological tools represents a novel concept for the development of information-processing materials systems. Here, we provide data on the mathematical model-guided implementation of a biomaterials-based positive feedback loop for the detection of proteolytic activities. Furthermore, we present data on an extended system design for the detection of the antibiotic novobiocin.

A biohybrid hydrogel for the urate-responsive release of urate oxidase.

Functional biomaterials that detect and correct pathological parameters hold high promises for biomedical application. In this study we describe a biohybrid hydrogel that detects elevated concentrations of uric acid and responds by dissolution and the release of uric acid-degrading urate oxidase. This material was synthesized by incorporating PEG-stabilized urate oxidase into a polyacrylamide hydrogel that was crosslinked by the uric acid-sensitive interaction between the uric acid transcription factor HucR and its operator hucO.

Synthesis and characterization of a stimulus-responsive L-ornithine-degrading hydrogel.

Hydrogels provide a highly favorable matrix for immobilizing growth factors, enzymes or cells for biomedical applications like tissue engineering, drug delivery or the treatment of metabolic diseases. In this study we describe the synthesis and characterization of a hydrogel able to degrade L-ornithine, a metabolite that is highly elevated in congenital hyperornithinemia. The hydrogel was synthesized by embedding the L-ornithine-degrading enzymes L-ornithine aminotransferase (OAT) and L-ornithine decarboxylase (ODC) into a polymer network.

A Hydrogel Sensing Pathological Urate Concentrations.

Metabolite-responsive hydrogels that detect pathological metabolite concentrations and react by releasing a therapeutic stimulus hold high promises in treating metabolic diseases. In this study, a hydrogel is described that discriminates between physiological and pathological concentrations of urate, the causative agent of gouty arthritis. The hydrogel is synthesized by coupling a dimeric variant of the Deinococcus radiodurans-derived urate repressor HucR to linear polyacrylamide.