Cited by 31Biochemical and Structural CharacterizationProbiotics and Fermented FoodsBacterial Genetics and Biotechnology

Release of the cell envelope protease PrtS in the growth medium of Streptococcus thermophilus 4F44

Chang, Oun Ki, Perrin, Clarisse, Galia, Wessam, Saulnier, Franck, Miclo, Laurent, Roux, Emeline, Driou, Alain, Humbert, Gérard +1 more·2012·International Dairy Journal

Abstract

PrtS is the sole cell envelope protease (CEP) characterized in Streptococcus thermophilus. It is believed that it is anchored to the cell wall by sortase A (SrtA) through the LPXTG motif present at its C-terminus. Two soluble proteases corresponding to PrtS in its proenzyme and mature form were detected in the supernatant of S. thermophilus strain 4F44. In this strain, 60% of the PrtS molecules are anchored to the cell wall and 40% released in the medium. Such a release might result from a partial deficiency in the strain 4F44 of SrtA, even if its sequence slightly differs from that of S. thermophilus strain LMD-9, in which PrtS is anchored. Indeed, the presence of an intact LPXTG motif at the C-terminus of the released proteases showed that the linking process driven by SrtA did not occur and these proteases were not released by proteolysis after their anchoring.

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Crossref · 10.1016/j.idairyj.2011.10.014

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  • Glycan chains from the glycomacropeptide region at the C-terminus of κ-casein may protect against hydrolysis by conferring hydrophilic properties and negative charge, increasing electrostatic repulsions.

    “Glycan chains from the glycomacropeptide region at the C-terminus of κ-casein may protect against hydrolysis in this region because they confer hydrophilic properties and negative charge, increasing electrostatic repulsions”

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Authors
Chang, O. K., Perrin, C., Galia, W., Saulnier, F., Miclo, L., Roux, E., Driou, A., Humbert, G., & Dary, A.
Affiliations
Laboratoire Animal et Agroécosystèmes (FR)
Corresponding author
Dary, Annie
Venue
International Dairy Journal
Publisher
Elsevier BV
Published
2012-04
Volume
23
Issue
2
Pages
91-98
ISSN
0958-6946 (ISSN-L)
OpenAlex
W2027076885
Cited by
31
References
40
Citations by year
2025: 1 · 2022: 12 · 2021: 1 · 2020: 2 · 2018: 3 · 2016: 3 · 2015: 2 · 2014: 2 · 2013: 4 · 2012: 1
FWCI
0.91
Type
journal article
Language
en
Open access
closed
Locations
  • International Dairy Journal (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Structural Characterization
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
PRT, Streptococcus thermophilus, sortase A, LPXTG motif, cell wall anchoring, protease release, proenzyme, proteolysis

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