From Electronic Sequence to Purified Protein Using Automated Gene Synthesis and In Vitro Transcription/Translation

De novo gene synthesis is the state-of-the-art method used to obtain genetic material adapted to the requirements of the host organism and a cornerstone for modern synthetic biology. Yet, little progress has been made regarding downstream processes of protein production from synthetic genetic material. The production of recombinant proteins traditionally requires extensive preparatory work including gene amplification, cloning, sequencing, transformation or transfection of the expression host, cultivation of living cells, and purification of the overexpressed protein. In this work we describe a fast and automated workflow for cell-free production of proteins starting from an electronic protein sequence or accession number. PRESTO (protein expression starting from oligonucleotides) seamlessly combines a tailored in silico sequence optimization with the assembly of short oligonucleotides into synthetic linear DNA expression cassettes, mammalian in vitro transcription/translation, and protein purification thereof. Integrated on a small liquid handling system it provides a hands-free high throughput source for functional synthetic proteins within 1 day.

[EEG changes with leponex medication]

Clozapin holds pharmacologically and clinically a special position among psychoactive drugs. By means of EEG examinations in 25 patients without and with Clozapin it could have been proved statistically that the distinctly marked changes can unambigously traced back to Clozapin medication. These role is in regard to localization explainable by pharmacologically assumed brain stem efficiency of the medicament. The increase of beta activity which was also found and which is not typical for neuroleptics can be explained in connection with the central anticholinerg action component.

[The significance of early auditory evoked potentials in the clinical diagnosis of alcoholic Wernicke encephalopathy]

A report is given on two patients with delirium tremens and alcoholic Wernicke's encephalopathy in whom highly pathologic curve behaviors of the early acoustically evoked potentials were found. Methodological and practical-clinical consequences are seen.