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  1. Article ; Online: A security check that monitors cell morphogenesis.

    Shen, Aimee

    Trends in microbiology

    2022  Volume 30, Issue 5, Page(s) 405–407

    Abstract: Bacterial endospore formation depends on a series of checkpoints to ensure the fidelity of this critical developmental process. Delerue et al. have uncovered a novel checkpoint in Bacillus subtilis that senses defects in the assembly of static polymers ... ...

    Abstract Bacterial endospore formation depends on a series of checkpoints to ensure the fidelity of this critical developmental process. Delerue et al. have uncovered a novel checkpoint in Bacillus subtilis that senses defects in the assembly of static polymers in one compartment and arrests the assembly of peptidoglycan in another compartment.
    MeSH term(s) Bacillus subtilis ; Bacterial Proteins ; Morphogenesis ; Peptidoglycan ; Spores, Bacterial
    Chemical Substances Bacterial Proteins ; Peptidoglycan
    Language English
    Publishing date 2022-03-26
    Publishing country England
    Document type Journal Article ; Comment
    ZDB-ID 1158963-2
    ISSN 1878-4380 ; 0966-842X
    ISSN (online) 1878-4380
    ISSN 0966-842X
    DOI 10.1016/j.tim.2022.03.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3738: Show issues Location:
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  2. Article: Clostridioides difficile

    Shen, Aimee

    Clinics in colon and rectal surgery

    2020  Volume 33, Issue 2, Page(s) 58–66

    Abstract: The Gram-positive, spore-forming bacterium, ...

    Abstract The Gram-positive, spore-forming bacterium,
    Language English
    Publishing date 2020-02-25
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2048635-2
    ISSN 1531-0043
    ISSN 1531-0043
    DOI 10.1055/s-0040-1701230
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Clostridioides difficile

    Shen, Aimee

    Annual review of microbiology

    2020  Volume 74, Page(s) 545–566

    Abstract: Spore formation and germination are essential for the bacterial ... ...

    Abstract Spore formation and germination are essential for the bacterial pathogen
    MeSH term(s) Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Clostridioides difficile/growth & development ; Clostridioides difficile/physiology ; Spores, Bacterial/growth & development
    Chemical Substances Bacterial Proteins
    Language English
    Publishing date 2020-06-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 207931-8
    ISSN 1545-3251 ; 0066-4227
    ISSN (online) 1545-3251
    ISSN 0066-4227
    DOI 10.1146/annurev-micro-011320-011321
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: A security check that monitors cell morphogenesis

    Shen, Aimee

    Trends in microbiology. 2022,

    2022  

    Abstract: Bacterial endospore formation depends on a series of checkpoints to ensure the fidelity of this critical developmental process. Delerue et al. have uncovered a novel checkpoint in Bacillus subtilis that senses defects in the assembly of static polymers ... ...

    Abstract Bacterial endospore formation depends on a series of checkpoints to ensure the fidelity of this critical developmental process. Delerue et al. have uncovered a novel checkpoint in Bacillus subtilis that senses defects in the assembly of static polymers in one compartment and arrests the assembly of peptidoglycan in another compartment.
    Keywords Bacillus subtilis ; endospores ; microbiology ; morphogenesis ; peptidoglycans
    Language English
    Publishing place Elsevier Ltd
    Document type Article
    Note Pre-press version
    ZDB-ID 1158963-2
    ISSN 1878-4380 ; 0966-842X
    ISSN (online) 1878-4380
    ISSN 0966-842X
    DOI 10.1016/j.tim.2022.03.008
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Protocol for quantifying the germination properties of individual bacterial endospores using PySpore.

    Ribis, John W / Shen, Aimee

    STAR protocols

    2023  Volume 4, Issue 4, Page(s) 102678

    Abstract: PySpore is a Python program that tracks the germination of individual bacterial endospores. Here, we present a protocol for segmenting spores and quantifying the germination properties of individual bacterial endospores using PySpore. We describe steps ... ...

    Abstract PySpore is a Python program that tracks the germination of individual bacterial endospores. Here, we present a protocol for segmenting spores and quantifying the germination properties of individual bacterial endospores using PySpore. We describe steps for using GUI-based tools to optimize image processing, annotating data, setting gates, and joining datasets for downstream analyses. We then describe procedures for plotting functionality tools without the user needing to modify the underlying code. For complete details on the use and execution of this protocol, please refer to Ribis et al. (2023).
    MeSH term(s) Spores, Bacterial ; Image Processing, Computer-Assisted
    Language English
    Publishing date 2023-10-30
    Publishing country United States
    Document type Journal Article
    ISSN 2666-1667
    ISSN (online) 2666-1667
    DOI 10.1016/j.xpro.2023.102678
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Expanding the

    Shen, Aimee

    Journal of bacteriology

    2019  Volume 201, Issue 14

    Abstract: Clostridioides ... ...

    Abstract Clostridioides difficile
    MeSH term(s) Clostridium difficile/genetics ; Clustered Regularly Interspaced Short Palindromic Repeats ; Gene Expression ; Plasmids ; Xylose
    Chemical Substances Xylose (A1TA934AKO)
    Language English
    Publishing date 2019-06-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 2968-3
    ISSN 1098-5530 ; 0021-9193
    ISSN (online) 1098-5530
    ISSN 0021-9193
    DOI 10.1128/JB.00089-19
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Protocol for quantifying the germination properties of individual bacterial endospores using PySpore

    John W. Ribis / Aimee Shen

    STAR Protocols, Vol 4, Iss 4, Pp 102678- (2023)

    2023  

    Abstract: Summary: PySpore is a Python program that tracks the germination of individual bacterial endospores. Here, we present a protocol for segmenting spores and quantifying the germination properties of individual bacterial endospores using PySpore. We ... ...

    Abstract Summary: PySpore is a Python program that tracks the germination of individual bacterial endospores. Here, we present a protocol for segmenting spores and quantifying the germination properties of individual bacterial endospores using PySpore. We describe steps for using GUI-based tools to optimize image processing, annotating data, setting gates, and joining datasets for downstream analyses. We then describe procedures for plotting functionality tools without the user needing to modify the underlying code.For complete details on the use and execution of this protocol, please refer to Ribis et al. (2023).1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
    Keywords Cell Biology ; Developmental Biology ; Microbiology ; Microscopy ; Computer Sciences ; Science (General) ; Q1-390
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Editorial overview: Gene regulation mechanisms governing Clostridioides difficile physiology and virulence.

    Shen, Aimee / Tamayo, Rita

    Current opinion in microbiology

    2022  Volume 67, Page(s) 102139

    MeSH term(s) Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Clostridioides ; Clostridioides difficile/genetics ; Clostridium Infections ; Gene Expression Regulation, Bacterial ; Humans ; Virulence/genetics
    Chemical Substances Bacterial Proteins
    Language English
    Publishing date 2022-02-26
    Publishing country England
    Document type Editorial
    ZDB-ID 1418474-6
    ISSN 1879-0364 ; 1369-5274
    ISSN (online) 1879-0364
    ISSN 1369-5274
    DOI 10.1016/j.mib.2022.02.001
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  9. Article: Analyses of cell wall synthesis in

    Shrestha, Shailab / Taib, Najwa / Gribaldo, Simonetta / Shen, Aimee

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Current models of bacterial cell division assume that the core synthases of the multiprotein divisome complex, FtsW-FtsI, are the primary drivers of septal peptidoglycan (PG) synthesis. These enzymes are typically encoded in the highly conserved division ...

    Abstract Current models of bacterial cell division assume that the core synthases of the multiprotein divisome complex, FtsW-FtsI, are the primary drivers of septal peptidoglycan (PG) synthesis. These enzymes are typically encoded in the highly conserved division and cell wall (
    Language English
    Publishing date 2023-08-08
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.08.06.552200
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Diversification of division mechanisms in endospore-forming bacteria revealed by analyses of peptidoglycan synthesis in Clostridioides difficile

    Shailab Shrestha / Najwa Taib / Simonetta Gribaldo / Aimee Shen

    Nature Communications, Vol 14, Iss 1, Pp 1-

    2023  Volume 14

    Abstract: Abstract The bacterial enzymes FtsW and FtsI, encoded in the highly conserved dcw gene cluster, are considered to be universally essential for the synthesis of septal peptidoglycan (PG) during cell division. Here, we show that the pathogen Clostridioides ...

    Abstract Abstract The bacterial enzymes FtsW and FtsI, encoded in the highly conserved dcw gene cluster, are considered to be universally essential for the synthesis of septal peptidoglycan (PG) during cell division. Here, we show that the pathogen Clostridioides difficile lacks a canonical FtsW/FtsI pair, and its dcw-encoded PG synthases have undergone a specialization to fulfill sporulation-specific roles, including synthesizing septal PG during the sporulation-specific mode of cell division. Although these enzymes are directly regulated by canonical divisome components during this process, dcw-encoded PG synthases and their divisome regulators are dispensable for cell division during normal growth. Instead, C. difficile uses a bifunctional class A penicillin-binding protein as the core divisome PG synthase, revealing a previously unreported role for this class of enzymes. Our findings support that the emergence of endosporulation in the Firmicutes phylum facilitated the functional repurposing of cell division factors. Moreover, they indicate that C. difficile, and likely other clostridia, assemble a distinct divisome that therefore may represent a unique target for therapeutic interventions.
    Keywords Science ; Q
    Subject code 572
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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