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  1. Article: FP-MAP: an extensive library of fingerprint-based molecular activity prediction tools.

    Venkatraman, Vishwesh

    Frontiers in chemistry

    2023  Volume 11, Page(s) 1239467

    Abstract: Discovering new drugs for disease treatment is challenging, requiring a multidisciplinary effort as well as time, and resources. With a view to improving hit discovery and lead compound identification, machine learning (ML) approaches are being ... ...

    Abstract Discovering new drugs for disease treatment is challenging, requiring a multidisciplinary effort as well as time, and resources. With a view to improving hit discovery and lead compound identification, machine learning (ML) approaches are being increasingly used in the decision-making process. Although a number of ML-based studies have been published, most studies only report fragments of the wider range of bioactivities wherein each model typically focuses on a particular disease. This study introduces FP-MAP, an extensive atlas of fingerprint-based prediction models that covers a diverse range of activities including neglected tropical diseases (caused by viral, bacterial and parasitic pathogens) as well as other targets implicated in diseases such as Alzheimer's. To arrive at the best predictive models, performance of ≈4,000 classification/regression models were evaluated on different bioactivity data sets using 12 different molecular fingerprints. The best performing models that achieved test set AUC values of 0.62-0.99 have been integrated into an easy-to-use graphical user interface that can be downloaded from https://gitlab.com/vishsoft/fpmap.
    Language English
    Publishing date 2023-08-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711776-5
    ISSN 2296-2646
    ISSN 2296-2646
    DOI 10.3389/fchem.2023.1239467
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: FP-ADMET: a compendium of fingerprint-based ADMET prediction models.

    Venkatraman, Vishwesh

    Journal of cheminformatics

    2021  Volume 13, Issue 1, Page(s) 75

    Abstract: Motivation: The absorption, distribution, metabolism, excretion, and toxicity (ADMET) of drugs plays a key role in determining which among the potential candidates are to be prioritized. In silico approaches based on machine learning methods are ... ...

    Abstract Motivation: The absorption, distribution, metabolism, excretion, and toxicity (ADMET) of drugs plays a key role in determining which among the potential candidates are to be prioritized. In silico approaches based on machine learning methods are becoming increasing popular, but are nonetheless limited by the availability of data. With a view to making both data and models available to the scientific community, we have developed FPADMET which is a repository of molecular fingerprint-based predictive models for ADMET properties. In this article, we have examined the efficacy of fingerprint-based machine learning models for a large number of ADMET-related properties. The predictive ability of a set of 20 different binary fingerprints (based on substructure keys, atom pairs, local path environments, as well as custom fingerprints such as all-shortest paths) for over 50 ADMET and ADMET-related endpoints have been evaluated as part of the study. We find that for a majority of the properties, fingerprint-based random forest models yield comparable or better performance compared with traditional 2D/3D molecular descriptors.
    Availability: The models are made available as part of open access software that can be downloaded from https://gitlab.com/vishsoft/fpadmet .
    Language English
    Publishing date 2021-09-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2486539-4
    ISSN 1758-2946
    ISSN 1758-2946
    DOI 10.1186/s13321-021-00557-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: FP-ADMET

    Vishwesh Venkatraman

    Journal of Cheminformatics, Vol 13, Iss 1, Pp 1-

    a compendium of fingerprint-based ADMET prediction models

    2021  Volume 12

    Abstract: Abstract Motivation The absorption, distribution, metabolism, excretion, and toxicity (ADMET) of drugs plays a key role in determining which among the potential candidates are to be prioritized. In silico approaches based on machine learning methods are ... ...

    Abstract Abstract Motivation The absorption, distribution, metabolism, excretion, and toxicity (ADMET) of drugs plays a key role in determining which among the potential candidates are to be prioritized. In silico approaches based on machine learning methods are becoming increasing popular, but are nonetheless limited by the availability of data. With a view to making both data and models available to the scientific community, we have developed FPADMET which is a repository of molecular fingerprint-based predictive models for ADMET properties. Summary In this article, we have examined the efficacy of fingerprint-based machine learning models for a large number of ADMET-related properties. The predictive ability of a set of 20 different binary fingerprints (based on substructure keys, atom pairs, local path environments, as well as custom fingerprints such as all-shortest paths) for over 50 ADMET and ADMET-related endpoints have been evaluated as part of the study. We find that for a majority of the properties, fingerprint-based random forest models yield comparable or better performance compared with traditional 2D/3D molecular descriptors. Availability The models are made available as part of open access software that can be downloaded from https://gitlab.com/vishsoft/fpadmet .
    Keywords ADMET ; Machine learning ; Molecular fingerprints ; Information technology ; T58.5-58.64 ; Chemistry ; QD1-999
    Subject code 006
    Language English
    Publishing date 2021-09-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Evaluation of Molecular Fingerprints for Determining Dye Aggregation on Semiconductor Surfaces.

    Venkatraman, Vishwesh

    Molecular informatics

    2020  Volume 41, Issue 1, Page(s) e2000062

    Abstract: Dye aggregation plays an important role in determining the photovoltaic performance of dye sensitized solar cells. Compared with the spectra observed in solution, it is, apriori, difficult to ascertain whether a dye is likely to show hypsochromic (H) or ... ...

    Abstract Dye aggregation plays an important role in determining the photovoltaic performance of dye sensitized solar cells. Compared with the spectra observed in solution, it is, apriori, difficult to ascertain whether a dye is likely to show hypsochromic (H) or bathochromic (J) aggregation, until after adsorption onto the semiconductor electrode. Herein, we show that molecular fingerprint-based methods provide a fast and efficient way to discriminate between H- and J-aggregating dyes. The efficacy of the fingerprint-based classification models is demonstrated with a diverse set of over 3000 organic dyes dissolved in different solvents. Requiring only the structure of the dye and the polarity of the solvent used, the machine learning model achieves close to 80 % classification accuracies that are comparable with models based on a combination of fragment counts and topological indices. For interested researchers, we have bundled the prediction tools as an R package.
    MeSH term(s) Adsorption ; Coloring Agents/chemistry ; Semiconductors ; Solar Energy ; Solvents/chemistry
    Chemical Substances Coloring Agents ; Solvents
    Language English
    Publishing date 2020-06-17
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2537668-8
    ISSN 1868-1751 ; 1868-1743
    ISSN (online) 1868-1751
    ISSN 1868-1743
    DOI 10.1002/minf.202000062
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: An Open Access Data Set Highlighting Aggregation of Dyes on Metal Oxides

    Vishwesh Venkatraman / Lethesh Kallidanthiyil Chellappan

    Data, Vol 5, Iss 45, p

    2020  Volume 45

    Abstract: The adsorption of a dye to a metal oxide surface such as TiO 2 , NiO and ZnO leads to deprotonation and often undesirable aggregation of dye molecules, which in turn impacts the photophysical properties of the dye. While controlled aggregation is useful ... ...

    Abstract The adsorption of a dye to a metal oxide surface such as TiO 2 , NiO and ZnO leads to deprotonation and often undesirable aggregation of dye molecules, which in turn impacts the photophysical properties of the dye. While controlled aggregation is useful for some applications, it can result in lower performance for dye-sensitized solar cells. To understand this phenomenon better, we have conducted an extensive search of the literature and identified over 4000 records of absorption spectra in solution and after adsorption onto metal oxide. The total data set comprises over 3500 unique compounds, with observed absorption maxima in solution and after adsorption on the semiconductor electrode. This data may serve to provide further insight into the structure-property relationships governing dye-aggregation behaviour.
    Keywords dye sensitized solar cell ; aggregation ; database ; absorption ; solvent polarity ; Bibliography. Library science. Information resources ; Z
    Language English
    Publishing date 2020-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article: Establishing Predictive Models for Solvatochromic Parameters of Ionic Liquids.

    Venkatraman, Vishwesh / Lethesh, Kallidanthiyil Chellappan

    Frontiers in chemistry

    2019  Volume 7, Page(s) 605

    Abstract: The use of ionic liquids (ILs) in applications ranging from catalysis to reaction media in organic synthesis has been successfully demonstrated in several cases. For any given IL application, fundamental properties, such as viscosity, thermal stability, ... ...

    Abstract The use of ionic liquids (ILs) in applications ranging from catalysis to reaction media in organic synthesis has been successfully demonstrated in several cases. For any given IL application, fundamental properties, such as viscosity, thermal stability, and toxicity have to be considered. Another property of interest is the polarity, which is a crucial indicator of solvent effects on chemical processes. Given the near-infinite combinations of cations and anions, experimental determination of solvatochromic parameters, such as the hydrogen-bond acidity and basicity, and dipolarity-polarizability is prohibitive. To address this, we evaluate the utility of alternative schemes based on parameters derived from COSMO-RS (COnductor-like Screening MOdel for Real Solvents) computations. The scheme is applied to a large library of yet-to-be-synthesized ionic liquids, to identify promising candidates for applications in biomass dissolution.
    Language English
    Publishing date 2019-09-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711776-5
    ISSN 2296-2646
    ISSN 2296-2646
    DOI 10.3389/fchem.2019.00605
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Adaptation of central metabolite pools to variations in growth rate and cultivation conditions in Saccharomyces cerevisiae.

    Kumar, Kanhaiya / Venkatraman, Vishwesh / Bruheim, Per

    Microbial cell factories

    2021  Volume 20, Issue 1, Page(s) 64

    Abstract: Background: Saccharomyces cerevisiae is a well-known popular model system for basic biological studies and serves as a host organism for the heterologous production of commercially interesting small molecules and proteins. The central metabolism is at ... ...

    Abstract Background: Saccharomyces cerevisiae is a well-known popular model system for basic biological studies and serves as a host organism for the heterologous production of commercially interesting small molecules and proteins. The central metabolism is at the core to provide building blocks and energy to support growth and survival in normal situations as well as during exogenous stresses and forced heterologous protein production. Here, we present a comprehensive study of intracellular central metabolite pool profiling when growing S. cerevisiae on different carbon sources in batch cultivations and at different growth rates in nutrient-limited glucose chemostats. The latest versions of absolute quantitative mass spectrometry-based metabolite profiling methodology were applied to cover glycolytic and pentose phosphate pathway metabolites, tricarboxylic acid cycle (TCA), complete amino acid, and deoxy-/nucleoside phosphate pools.
    Results: Glutamate, glutamine, alanine, and citrate were the four most abundant metabolites for most conditions tested. The amino acid is the dominant metabolite class even though a marked relative reduction compared to the other metabolite classes was observed for nitrogen and phosphate limited chemostats. Interestingly, glycolytic and pentose phosphate pathway (PPP) metabolites display the largest variation among the cultivation conditions while the nucleoside phosphate pools are more stable and vary within a closer concentration window. The overall trends for glucose and nitrogen-limited chemostats were increased metabolite pools with the increasing growth rate. Next, comparing the chosen chemostat reference growth rate (0.12 h
    Conclusions: This study provides new knowledge-how the central metabolism is adapting to various cultivations conditions and growth rates which is essential for expanding our understanding of cellular metabolism and the development of improved phenotypes in metabolic engineering.
    MeSH term(s) Adaptation, Physiological ; Bioreactors ; Carbon/metabolism ; Culture Media/analysis ; Fermentation ; Glucose/metabolism ; Metabolic Engineering/methods ; Metabolome ; Saccharomyces cerevisiae/growth & development ; Saccharomyces cerevisiae/metabolism
    Chemical Substances Culture Media ; Carbon (7440-44-0) ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2021-03-09
    Publishing country England
    Document type Journal Article
    ISSN 1475-2859
    ISSN (online) 1475-2859
    DOI 10.1186/s12934-021-01557-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Designing High-Refractive Index Polymers Using Materials Informatics.

    Venkatraman, Vishwesh / Alsberg, Bjørn Kåre

    Polymers

    2018  Volume 10, Issue 1

    Abstract: A machine learning strategy is presented for the rapid discovery of new polymeric materials satisfying multiple desirable properties. Of particular interest is the design of high refractive index polymers. Our in silico approach employs a series of ... ...

    Abstract A machine learning strategy is presented for the rapid discovery of new polymeric materials satisfying multiple desirable properties. Of particular interest is the design of high refractive index polymers. Our in silico approach employs a series of quantitative structure⁻property relationship models that facilitate rapid virtual screening of polymers based on relevant properties such as the refractive index, glass transition and thermal decomposition temperatures, and solubility in standard solvents. Exploration of the chemical space is carried out using an evolutionary algorithm that assembles synthetically tractable monomers from a database of existing fragments. Selected monomer structures that were further evaluated using density functional theory calculations agree well with model predictions.
    Language English
    Publishing date 2018-01-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym10010103
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: DENOPTIM: Software for Computational

    Foscato, Marco / Venkatraman, Vishwesh / Jensen, Vidar R

    Journal of chemical information and modeling

    2019  Volume 59, Issue 10, Page(s) 4077–4082

    Abstract: A general-purpose software package, termed DE Novo OPTimization of In/organic Molecules (DENOPTIM), ... ...

    Abstract A general-purpose software package, termed DE Novo OPTimization of In/organic Molecules (DENOPTIM), for
    MeSH term(s) Computer Simulation ; Drug Design ; Humans ; Inorganic Chemicals ; Models, Chemical ; Organic Chemicals ; Software
    Chemical Substances Inorganic Chemicals ; Organic Chemicals
    Language English
    Publishing date 2019-09-18
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 190019-5
    ISSN 1549-960X ; 0095-2338
    ISSN (online) 1549-960X
    ISSN 0095-2338
    DOI 10.1021/acs.jcim.9b00516
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Drugsniffer: An Open Source Workflow for Virtually Screening Billions of Molecules for Binding Affinity to Protein Targets.

    Venkatraman, Vishwesh / Colligan, Thomas H / Lesica, George T / Olson, Daniel R / Gaiser, Jeremiah / Copeland, Conner J / Wheeler, Travis J / Roy, Amitava

    Frontiers in pharmacology

    2022  Volume 13, Page(s) 874746

    Abstract: The SARS-CoV2 pandemic has highlighted the importance of efficient and effective methods for identification of therapeutic drugs, and in particular has laid bare the need for methods that allow exploration of the full diversity of synthesizable small ... ...

    Abstract The SARS-CoV2 pandemic has highlighted the importance of efficient and effective methods for identification of therapeutic drugs, and in particular has laid bare the need for methods that allow exploration of the full diversity of synthesizable small molecules. While classical high-throughput screening methods may consider up to millions of molecules, virtual screening methods hold the promise of enabling appraisal of billions of candidate molecules, thus expanding the search space while concurrently reducing costs and speeding discovery. Here, we describe a new screening pipeline, called
    Language English
    Publishing date 2022-04-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2022.874746
    Database MEDical Literature Analysis and Retrieval System OnLINE

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