Serine peptidase Vpr forms enzymatically active fibrils outside Bacillus bacteria revealed by cryo-EM.


Journal

Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555

Informations de publication

Date de publication:
18 Nov 2023
Historique:
received: 17 08 2023
accepted: 08 11 2023
medline: 27 11 2023
pubmed: 19 11 2023
entrez: 18 11 2023
Statut: epublish

Résumé

Bacteria develop a variety of extracellular fibrous structures crucial for their survival, such as flagella and pili. In this study, we use cryo-EM to identify protein fibrils surrounding lab-cultured Bacillus amyloiquefaciens and discover an unreported fibril species in addition to the flagellar fibrils. These previously unknown fibrils are composed of Vpr, an extracellular serine peptidase. We find that Vpr assembles into fibrils in an enzymatically active form, potentially representing a strategy of enriching Vpr activities around bacterial cells. Vpr fibrils are also observed under other culture conditions and around other Bacillus bacteria, such as Bacillus subtilis, which may suggest a general mechanism across all Bacillus bacterial groups. Taken together, our study reveals fibrils outside the bacterial cell and sheds light on the physiological role of these extracellular fibrils.

Identifiants

pubmed: 37980359
doi: 10.1038/s41467-023-43359-z
pii: 10.1038/s41467-023-43359-z
pmc: PMC10657474
doi:

Substances chimiques

Serine Endopeptidases EC 3.4.21.-
Serine 452VLY9402

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

7503

Subventions

Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 32271276

Informations de copyright

© 2023. The Author(s).

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Auteurs

Yijia Cheng (Y)

Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China.

Jianting Han (J)

Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China.

Meinai Song (M)

Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China.

Shuqin Zhang (S)

Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China.

Qin Cao (Q)

Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China. caoqin@sjtu.edu.cn.

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Classifications MeSH