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  1. Article ; Online: The tubulin mutation database: A resource for the cytoskeleton community.

    Pham, Catherine L / Morrissette, Naomi S

    Cytoskeleton (Hoboken, N.J.)

    2019  Volume 76, Issue 2, Page(s) 186–191

    Abstract: ... to the parental amino acid sequence and citation(s) for the original research. The data is represented ...

    Abstract Over the last 40 years, the phenotypic consequences of point mutations to tubulin genes have been described in a wide variety of eukaryotes. A publicly available web-based catalog of all published point mutations to tubulin was assembled. Each entry records a specific substitution to a discrete tubulin, the species where the mutation was described, the associated phenotype, and provides hyperlinks to the parental amino acid sequence and citation(s) for the original research. The data is represented in individual tables for the universal tubulin families (α-, β-, and γ-tubulins) with the smaller datasets for point mutations to δ-, ε-, and ζ-tubulins individually appended to the γ-tubulin mutation table. Because tubulins are highly conserved proteins, the benefit of organizing the database tables in order of amino acid position is that comparison between equivalent residues in different isotypes or species is straightforward. For example, it was shown that seven substitutions which are associated with human brain malformations known as tubulinopathies were previously identified in other contexts that suggest that they influence microtubule stability. It was anticipated that this resource will simplify evaluation of the role of specific amino acids or domains in microtubule function.
    MeSH term(s) Animals ; Cytoskeleton/genetics ; Databases, Genetic ; Humans ; Mutation/genetics ; Protein Multimerization ; Protein Structure, Secondary ; Tubulin/chemistry ; Tubulin/genetics ; User-Computer Interface
    Chemical Substances Tubulin
    Language English
    Publishing date 2019-02-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2534372-5
    ISSN 1949-3592 ; 1949-3584
    ISSN (online) 1949-3592
    ISSN 1949-3584
    DOI 10.1002/cm.21514
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: From B to A: making an essential cofactor in a human parasite.

    Morrissette, Naomi S / Goulding, Celia W

    The Biochemical journal

    2017  Volume 474, Issue 18, Page(s) 3089–3092

    Abstract: Trypanosomatids are parasitic eukaryotic organisms that cause human disease. These organisms have complex lifestyles; cycling between vertebrate and insect hosts and alternating between two morphologies; a replicating form and an infective, ... ...

    Abstract Trypanosomatids are parasitic eukaryotic organisms that cause human disease. These organisms have complex lifestyles; cycling between vertebrate and insect hosts and alternating between two morphologies; a replicating form and an infective, nonreplicating one. Because trypanosomatids are one of the few organisms that do not synthesize the essential cofactor, heme, these parasites sequester the most common form, heme B, from their hosts. Once acquired, the parasites derivatize heme B to heme A by two sequential enzyme reactions. Although heme C is found in many cytochrome
    MeSH term(s) Animals ; Cytochromes c ; Electron Transport Complex IV ; Heme/chemistry ; Humans ; Parasites ; Trypanosoma cruzi
    Chemical Substances Heme (42VZT0U6YR) ; Cytochromes c (9007-43-6) ; Electron Transport Complex IV (EC 1.9.3.1)
    Language English
    Publishing date 2017-08-30
    Publishing country England
    Document type Journal Article ; Comment
    ZDB-ID 2969-5
    ISSN 1470-8728 ; 0006-2936 ; 0306-3275 ; 0264-6021
    ISSN (online) 1470-8728
    ISSN 0006-2936 ; 0306-3275 ; 0264-6021
    DOI 10.1042/BCJ20170446
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Systematic Analysis of Clemastine, a Candidate Apicomplexan Parasite-Selective Tubulin-Targeting Agent.

    Abbaali, Izra / Truong, Danny A / Day, Shania D / Haro-Ramirez, Nancy / Morrissette, Naomi S

    International journal of molecular sciences

    2021  Volume 23, Issue 1

    Abstract: Apicomplexan parasites, such ... ...

    Abstract Apicomplexan parasites, such as
    MeSH term(s) Animals ; Antiparasitic Agents/pharmacology ; Apicoplasts/drug effects ; Cells, Cultured ; Clemastine/pharmacology ; Histamine Antagonists/pharmacology ; Humans ; Microtubules/metabolism ; Parasites/drug effects ; Protozoan Proteins/metabolism ; Tubulin/metabolism
    Chemical Substances Antiparasitic Agents ; Histamine Antagonists ; Protozoan Proteins ; Tubulin ; Clemastine (95QN29S1ID)
    Language English
    Publishing date 2021-12-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms23010068
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Systematic Analysis of Clemastine, a Candidate Apicomplexan Parasite-Selective Tubulin-Targeting Agent

    Izra Abbaali / Danny A. Truong / Shania D. Day / Nancy Haro-Ramirez / Naomi S. Morrissette

    International Journal of Molecular Sciences, Vol 23, Iss 68, p

    2022  Volume 68

    Abstract: Apicomplexan parasites, such as Toxoplasma gondii , Plasmodium spp., Babesia spp., and Cryptosporidium spp., cause significant morbidity and mortality. Existing treatments are problematic due to toxicity and the emergence of drug-resistant parasites. ... ...

    Abstract Apicomplexan parasites, such as Toxoplasma gondii , Plasmodium spp., Babesia spp., and Cryptosporidium spp., cause significant morbidity and mortality. Existing treatments are problematic due to toxicity and the emergence of drug-resistant parasites. Because protozoan tubulin can be selectively disrupted by small molecules to inhibit parasite growth, we assembled an in vitro testing cascade to fully delineate effects of candidate tubulin-targeting drugs on Toxoplasma gondii and vertebrate host cells. Using this analysis, we evaluated clemastine, an antihistamine that has been previously shown to inhibit Plasmodium growth by competitively binding to the CCT/TRiC tubulin chaperone as a proof-of-concept. We concurrently analyzed astemizole, a distinct antihistamine that blocks heme detoxification in Plasmodium . Both drugs have EC 50 values of ~2 µM and do not demonstrate cytotoxicity or vertebrate microtubule disruption at this concentration. Parasite subpellicular microtubules are shortened by treatment with either clemastine or astemizole but not after treatment with pyrimethamine, indicating that this effect is not a general response to antiparasitic drugs. Immunoblot quantification indicates that the total α-tubulin concentration of 0.02 pg/tachyzoite does not change with clemastine treatment. In conclusion, the testing cascade allows profiling of small-molecule effects on both parasite and vertebrate cell viability and microtubule integrity.
    Keywords plaque ; ImageJ ; Stress Fiber Network program ; subpellicular microtubules ; pyrimethamine ; parabulin ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 572
    Language English
    Publishing date 2022-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online ; Conference proceedings: Ingenious strategies of microbial pathogens.

    Morrissette, Naomi S / Machner, Matthias P

    Molecular biology of the cell

    2015  Volume 26, Issue 6, Page(s) 1007

    MeSH term(s) Bacterial Infections/immunology ; Bacterial Infections/microbiology ; Host-Pathogen Interactions ; Humans ; Immunity, Innate ; Toxoplasmosis/immunology ; Toxoplasmosis/parasitology
    Language English
    Publishing date 2015-03-15
    Publishing country United States
    Document type Congresses ; Introductory Journal Article
    ZDB-ID 1098979-1
    ISSN 1939-4586 ; 1059-1524
    ISSN (online) 1939-4586
    ISSN 1059-1524
    DOI 10.1091/mbc.E15-01-0011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: The tubulin database

    Izra Abbaali / Danny Truong / Shania Deon Day / Faliha Mushayeed / Bhargavi Ganesh / Nancy Haro-Ramirez / Juliet Isles / Hindol Nag / Catherine Pham / Priya Shah / Ishaan Tomar / Carolina Manel-Romero / Naomi S. Morrissette

    PLoS ONE, Vol 18, Iss

    Linking mutations, modifications, ligands and local interactions

    2023  Volume 12

    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: The tubulin database: Linking mutations, modifications, ligands and local interactions.

    Abbaali, Izra / Truong, Danny / Day, Shania Deon / Mushayeed, Faliha / Ganesh, Bhargavi / Haro-Ramirez, Nancy / Isles, Juliet / Nag, Hindol / Pham, Catherine / Shah, Priya / Tomar, Ishaan / Manel-Romero, Carolina / Morrissette, Naomi S

    PloS one

    2023  Volume 18, Issue 12, Page(s) e0295279

    Abstract: ... the associated phenotype with hyperlinks to the amino acid sequence and citation(s) for research. This report ...

    Abstract Microtubules are polymeric filaments, constructed of α-β tubulin heterodimers that underlie critical subcellular structures in eukaryotic organisms. Four homologous proteins (γ-, δ-, ε- and ζ-tubulin) additionally contribute to specialized microtubule functions. Although there is an immense volume of publicly available data pertaining to tubulins, it is difficult to assimilate all potentially relevant information across diverse organisms, isotypes, and categories of data. We previously assembled an extensive web-based catalogue of published missense mutations to tubulins with >1,500 entries that each document a specific substitution to a discrete tubulin, the species where the mutation was described and the associated phenotype with hyperlinks to the amino acid sequence and citation(s) for research. This report describes a significant update and expansion of our online resource (TubulinDB.bio.uci.edu) to nearly 18,000 entries. It now encompasses a cross-referenced catalog of post-translational modifications (PTMs) to tubulin drawn from public datasets, primary literature, and predictive algorithms. In addition, tubulin protein structures were used to define local interactions with bound ligands (GTP, GDP and diverse microtubule-targeting agents) and amino acids at the intradimer interface, within the microtubule lattice and with associated proteins. To effectively cross-reference these datasets, we established a universal tubulin numbering system to map entries into a common framework that accommodates specific insertions and deletions to tubulins. Indexing and cross-referencing permitted us to discern previously unappreciated patterns. We describe previously unlinked observations of loss of PTM sites in the context of cancer cells and tubulinopathies. Similarly, we expanded the set of clinical substitutions that may compromise MAP or microtubule-motor interactions by collecting tubulin missense mutations that alter amino acids at the interface with dynein and doublecortin. By expanding the database as a curated resource, we hope to relate model organism data to clinical findings of pathogenic tubulin variants. Ultimately, we aim to aid researchers in hypothesis generation and design of studies to dissect tubulin function.
    MeSH term(s) Tubulin/metabolism ; Microtubules/metabolism ; Cytoskeleton/metabolism ; Mutation ; Ligands ; Amino Acids/metabolism
    Chemical Substances Tubulin ; Ligands ; Amino Acids
    Language English
    Publishing date 2023-12-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0295279
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Basal body structure and composition in the apicomplexans Toxoplasma and Plasmodium.

    Francia, Maria E / Dubremetz, Jean-Francois / Morrissette, Naomi S

    Cilia

    2016  Volume 5, Page(s) 3

    Abstract: The phylum Apicomplexa encompasses numerous important human and animal disease-causing parasites, including the Plasmodium species, and Toxoplasma gondii, causative agents of malaria and toxoplasmosis, respectively. Apicomplexans proliferate by asexual ... ...

    Abstract The phylum Apicomplexa encompasses numerous important human and animal disease-causing parasites, including the Plasmodium species, and Toxoplasma gondii, causative agents of malaria and toxoplasmosis, respectively. Apicomplexans proliferate by asexual replication and can also undergo sexual recombination. Most life cycle stages of the parasite lack flagella; these structures only appear on male gametes. Although male gametes (microgametes) assemble a typical 9+2 axoneme, the structure of the templating basal body is poorly defined. Moreover, the relationship between asexual stage centrioles and microgamete basal bodies remains unclear. While asexual stages of Plasmodium lack defined centriole structures, the asexual stages of Toxoplasma and closely related coccidian apicomplexans contain centrioles that consist of nine singlet microtubules and a central tubule. There are relatively few ultra-structural images of Toxoplasma microgametes, which only develop in cat intestinal epithelium. Only a subset of these include sections through the basal body: to date, none have unambiguously captured organization of the basal body structure. Moreover, it is unclear whether this basal body is derived from pre-existing asexual stage centrioles or is synthesized de novo. Basal bodies in Plasmodium microgametes are thought to be synthesized de novo, and their assembly remains ill-defined. Apicomplexan genomes harbor genes encoding δ- and ε-tubulin homologs, potentially enabling these parasites to assemble a typical triplet basal body structure. Moreover, the UNIMOD components (SAS6, SAS4/CPAP, and BLD10/CEP135) are conserved in these organisms. However, other widely conserved basal body and flagellar biogenesis elements are missing from apicomplexan genomes. These differences may indicate variations in flagellar biogenesis pathways and in basal body arrangement within the phylum. As apicomplexan basal bodies are distinct from their metazoan counterparts, it may be possible to selectively target parasite structures in order to inhibit microgamete motility which drives generation of genetic diversity in Toxoplasma and transmission for Plasmodium.
    Language English
    Publishing date 2016-02-04
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2689513-4
    ISSN 2046-2530
    ISSN 2046-2530
    DOI 10.1186/s13630-016-0025-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Auranofin Resistance in

    Ma, Christopher I / Tirtorahardjo, James A / Jan, Sharon / Schweizer, Sakura S / Rosario, Shawn A C / Du, Yanmiao / Zhang, Jerry J / Morrissette, Naomi S / Andrade, Rosa M

    Frontiers in cellular and infection microbiology

    2021  Volume 11, Page(s) 618994

    Abstract: Auranofin, a reprofiled FDA-approved drug originally designed to treat rheumatoid arthritis, has emerged as a promising anti-parasitic drug. It induces the accumulation of reactive oxygen species (ROS) in parasites, ... ...

    Abstract Auranofin, a reprofiled FDA-approved drug originally designed to treat rheumatoid arthritis, has emerged as a promising anti-parasitic drug. It induces the accumulation of reactive oxygen species (ROS) in parasites, including
    MeSH term(s) Animals ; Auranofin/pharmacology ; Parasites ; Reactive Oxygen Species ; Thioredoxin-Disulfide Reductase/genetics ; Toxoplasma/genetics
    Chemical Substances Reactive Oxygen Species ; Auranofin (3H04W2810V) ; Thioredoxin-Disulfide Reductase (EC 1.8.1.9)
    Language English
    Publishing date 2021-03-19
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2021.618994
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: A century of Toxoplasma research.

    Ajioka, James W / Morrissette, Naomi S

    International journal for parasitology

    2009  Volume 39, Issue 8, Page(s) 859–860

    MeSH term(s) Animals ; History, 20th Century ; History, 21st Century ; Humans ; Parasitology/history ; Toxoplasma/classification
    Language English
    Publishing date 2009-02-25
    Publishing country England
    Document type Comment ; Historical Article ; Introductory Journal Article
    ZDB-ID 120518-3
    ISSN 1879-0135 ; 0020-7519
    ISSN (online) 1879-0135
    ISSN 0020-7519
    DOI 10.1016/j.ijpara.2009.02.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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