Unser 10. Leibniz Plant Biochemistry Symposium am 7. und 8. Mai war ein großer Erfolg. Thematisch ging es in diesem Jahr um neue Methoden und Forschungsansätze der Naturstoffchemie. Die exzellenten Vorträge über Wirkstoffe…
Omanische Heilpflanze im Fokus der Phytochemie IPB-Wissenschaftler und Partner aus Dhofar haben jüngst die omanische Heilpflanze Terminalia dhofarica unter die phytochemische Lupe genommen. Die Pflanze ist reich an…
Geschmack ist vorhersagbar: Mit FlavorMiner. FlavorMiner heißt das Tool, das IPB-Chemiker und Partner aus Kolumbien jüngst entwickelt haben. Das Programm kann, basierend auf maschinellem Lernen (KI), anhand der…
Herrera-Rocha, F.; Fernández-Niño, M.; Duitama, J.; Cala, M. P.; Chica, M. J.; Wessjohann, L. A.; Davari, M. D.; Barrios, A. F. G.;FlavorMiner: a machine learning platform for extracting molecular flavor profiles from structural dataJ. Cheminform.16140(2024)DOI: 10.1186/s13321-024-00935-9
Flavor is the main factor driving consumers acceptance of food products. However, tracking the biochemistry of flavor is a formidable challenge due to the complexity of food composition. Current methodologies for linking individual molecules to flavor in foods and beverages are expensive and time-consuming. Predictive models based on machine learning (ML) are emerging as an alternative to speed up this process. Nonetheless, the optimal approach to predict flavor features of molecules remains elusive. In this work we present FlavorMiner, an ML-based multilabel flavor predictor. FlavorMiner seamlessly integrates different combinations of algorithms and mathematical representations, augmented with class balance strategies to address the inherent class of the input dataset. Notably, Random Forest and K-Nearest Neighbors combined with Extended Connectivity Fingerprint and RDKit molecular descriptors consistently outperform other combinations in most cases. Resampling strategies surpass weight balance methods in mitigating bias associated with class imbalance. FlavorMiner exhibits remarkable accuracy, with an average ROC AUC score of 0.88. This algorithm was used to analyze cocoa metabolomics data, unveiling its profound potential to help extract valuable insights from intricate food metabolomics data. FlavorMiner can be used for flavor mining in any food product, drawing from a diverse training dataset that spans over 934 distinct food products.Scientific Contribution FlavorMiner is an advanced machine learning (ML)-based tool designed to predict molecular flavor features with high accuracy and efficiency, addressing the complexity of food metabolomics. By leveraging robust algorithmic combinations paired with mathematical representations FlavorMiner achieves high predictive performance. Applied to cocoa metabolomics, FlavorMiner demonstrated its capacity to extract meaningful insights, showcasing its versatility for flavor analysis across diverse food products. This study underscores the transformative potential of ML in accelerating flavor biochemistry research, offering a scalable solution for the food and beverage industry.
Publikation
Ricardo, M. G.; Vázquéz-Mena, Y.; Iglesias-Morales, Y.; Wessjohann, L. A.; Rivera, D. G.;On the scope of the double Ugi multicomponent stapling to produce helical peptidesBioorg. Chem.113104987(2021)DOI: 10.1016/j.bioorg.2021.104987
The stabilization of helical structures by peptide stapling approaches is now a mature technology capable to provide a variety of biomedical applications. Recently, it was shown that multicomponent macrocyclization is not only an effective way to introduce conformational constraints but it also allows to incorporate additional functionalities to the staple moiety in a one-pot process. This work investigates the scope of the double Ugi multicomponent stapling approach in its capacity to produce helical peptides from unstructured sequences. For this, three different stapling combinations were implemented and the CD spectra of the cyclic peptides were measured to determine the effect of the multicomponent macrocyclization on the resulting secondary structure. A new insight into some structural factors influencing the helicity type and content is provided, along with new prospects on the utilization of this methodology to diversify the molecular tethers linking the amino acid side chains.
Publikation
Ntie-Kang, F.; Telukunta, K. K.; Fobofou, S. A. T.; Chukwudi Osamor, V.; Egieyeh, S. A.; Valli, M.; Djoumbou-Feunang, Y.; Sorokina, M.; Stork, C.; Mathai, N.; Zierep, P.; Chávez-Hernández, A. L.; Duran-Frigola, M.; Babiaka, S. B.; Tematio Fouedjou, R.; Eni, D. B.; Akame, S.; Arreyetta-Bawak, A. B.; Ebob, O. T.; Metuge, J. A.; Bekono, B. D.; Isa, M. A.; Onuku, R.; Shadrack, D. M.; Musyoka, T. M.; Patil, V. M.; van der Hooft, J. J. J.; da Silva Bolzani, V.; Medina-Franco, J. L.; Kirchmair, J.; Weber, T.; Tastan Bishop, ?.; Medema, M. H.; Wessjohann, L. A.; Ludwig-Müller, J.;Computational Applications in Secondary Metabolite Discovery (CAiSMD): an online workshopJ. Cheminform.1364(2021)DOI: 10.1186/s13321-021-00546-8
AbstractWe report the major conclusions of the online open-access workshop “Computational Applications in Secondary Metabolite Discovery (CAiSMD)” that took place from 08 to 10 March 2021. Invited speakers from academia and industry and about 200 registered participants from five continents (Africa, Asia, Europe, South America, and North America) took part in the workshop. The workshop highlighted the potential applications of computational methodologies in the search for secondary metabolites (SMs) or natural products (NPs) as potential drugs and drug leads. During 3 days, the participants of this online workshop received an overview of modern computer-based approaches for exploring NP discovery in the “omics” age. The invited experts gave keynote lectures, trained participants in hands-on sessions, and held round table discussions. This was followed by oral presentations with much interaction between the speakers and the audience. Selected applicants (early-career scientists) were offered the opportunity to give oral presentations (15 min) and present posters in the form of flash presentations (5 min) upon submission of an abstract. The final program available on the workshop website (https://caismd.indiayouth.info/) comprised of 4 keynote lectures (KLs), 12 oral presentations (OPs), 2 round table discussions (RTDs), and 5 hands-on sessions (HSs). This meeting report also references internet resources for computational biology in the area of secondary metabolites that are of use outside of the workshop areas and will constitute a long-term valuable source for the community. The workshop concluded with an online survey form to be completed by speakers and participants for the goal of improving any subsequent editions.
Publikation
Heym, P.-P.; Brandt, W.; Wessjohann, L. A.; Niclas, H.-J.;Virtual screening for plant PARP inhibitors – what can be learned from human PARP inhibitors?J. Cheminform.4O24(2012)DOI: 10.1186/1758-2946-4-S1-O24