Identification of novel salt tolerance-associated proteins from the secretome of Enterococcus faecalis.


Journal

World journal of microbiology & biotechnology
ISSN: 1573-0972
Titre abrégé: World J Microbiol Biotechnol
Pays: Germany
ID NLM: 9012472

Informations de publication

Date de publication:
08 Aug 2022
Historique:
received: 01 03 2022
accepted: 04 07 2022
entrez: 7 8 2022
pubmed: 8 8 2022
medline: 10 8 2022
Statut: epublish

Résumé

The ability of bacteria to adapt to the external environment is fundamental for their survival. A halotolerant microorganism Enterococcus faecalis able to grow under high salt stress conditions was isolated in the present study. The SDS-PAGE analysis of the secretome showed a protein band with a molecular weight of 28 kDa, gradually increased with an increase in salt concentration, and the highest intensity was observed at 15% salt stress condition. LC-MS/MS analysis of this particular band identified fourteen different proteins, out of which nine proteins were uncharacterized. Further, the function of uncharacterized proteins was predicted based on structure-function relationship using a reverse template search approach deciphering uncharacterized protein into type III polyketide synthases, stress-induced protein-1, Eed-h3k79me3, ba42 protein, 3-methyladenine DNA glycosylase, Atxa protein, membrane-bound respiratory hydrogenase, type-i restriction-modification system methylation subunit and ManxA. STRING network analysis further a showed strong association among the proteins. The processes predicted involvement of these proteins in signal transduction, ions transport, synthesis of the protective layer, cellular homeostasis and regulation of gene expression and different metabolic pathways. Thus, the fourteen proteins identified in the secretome play an essential role in maintaining cellular homeostasis in E. faecalis under high-salinity stress. This may represent a novel and previously unreported strategy by E. faecalis to maintain their normal growth and physiology under high salinity conditions.

Identifiants

pubmed: 35934729
doi: 10.1007/s11274-022-03354-w
pii: 10.1007/s11274-022-03354-w
doi:

Substances chimiques

Bacterial Proteins 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

177

Subventions

Organisme : Indian Council of Agricultural Research
ID : NAIP/Comp-4/C4/C-30033

Informations de copyright

© 2022. The Author(s), under exclusive licence to Springer Nature B.V.

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Auteurs

Prasenjit Paria (P)

Aquatic Environmental Biotechnology and Nanotechnology Division, ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, 700120, India.

Hirak Jyoti Chakraborty (HJ)

Aquatic Environmental Biotechnology and Nanotechnology Division, ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, 700120, India.

Bijay Kumar Behera (BK)

Aquatic Environmental Biotechnology and Nanotechnology Division, ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, 700120, India. beherabk18@yahoo.co.in.

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