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Kuellmer, K.

Publications and source records attributed to Kuellmer, K..

2 recordsLinked to original sources

From Planning Stage To FAIR Data: A Practical Metadatasheet For Biomedical Scientists

Datasets consist of measurement data and metadata. Metadata provides context, essential for understanding and (re-)using data. Various metadata standards exist for different methods, systems and contexts. However, relevant information resides at differing stages across the data-lifecycle. Often, this information is defined and standardized only at publication stage, which can lead to data loss and workload increase. In this study, we developed Metadatasheet, a metadata standard based on interviews with members of two biomedical consortia and systematic screening of data repositories. It aligns with the data-lifecycle allowing synchronous metadata recording within Microsoft Excel, a widespread data recording software. Additionally, we provide an implementation, the Metadata Workbook, that offers user-friendly features like automation, dynamic adaption, metadata integrity checks, and export options for various metadata standards. By design and due to its extensive documentation, the proposed metadata standard simplifies recording and structuring of metadata for biomedical scientists, promoting practicality and convenience in data management. This framework can accelerate scientific progress by enhancing collaboration and knowledge transfer throughout the intermediate steps of data creation.

bioinformatics↗

Interaction of adenylate cyclase CyaC with regulators Smc01817 and Clr of Sinorhizobium meliloti: cAMP as an ON/OFF trigger in sensor-regulator complexes?

The symbiotic bacterium Sinorhizobium meliloti contains a large number of adenylate cyclases (AC) for the control of different life styles. ACs produce cyclic AMP (cAMP) as a secondary messenger. Earlier, the redox responsive membrane-intrinsic AC CyaC has been shown to produce a trimeric signalling complex CyaCxCycRxcAMP-Clr. Here, use of the bacterial two-hybrid system BACTH showed that the LysR-type transcriptional regulator Smc01817 interacts in vivo with CyaC and the general cAMP-regulator Clr, suggesting the formation of a sensor-regulator complex CyaCxSmc01817xcAMP-Clr. Therefore, formation of sensor-regulator complexes from ACs and transcriptional regulators seems to be a means in S. meliloti to setup specific signalling routes in a background with a large number of signalling routes applying the same signalling molecule (cAMP). Use of caged cAMP allows to address a specific signalling route and set of regulators, which is at variance with the classical role of cAMP as a diffusing secondary messenger.

microbiology↗