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Literature summary for 3.4.21.96 extracted from

  • Sadat-Mekmene, L.; Jardin, J.; Corre, C.; Mollé, D.; Richoux, R.; Delage, M.; Lortal, S.; Gagnaire, V.
    Simultaneous presence of PrtH and PrtH2 proteinases in Lactobacillus helveticus strains improves breakdown of the pure alphas1-casein (2011), Appl. Environ. Microbiol., 77, 179-186.
    View publication on PubMedView publication on EuropePMC
Search for more literature for 3.4.21.96

Organism

Organism UniProt Comment Textmining
Lactobacillus helveticus
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 a diversity of 15 strains of Lactobacillus helveticus are explored in terms of their proteolytic activities and specificities on pure caseins or on milk casein micelles. CEP activity differ 14fold when the strains are assayed on a synthetic substrate, but no significant differences are detected between strains possessing one or two CEPs. Simultaneous presence of PrtH and PrtH2 proteinases in Lactobacillus helveticus strains improves breakdown of the pure alphas1-casein
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
alpha1-casein + H2O
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 Lactobacillus helveticus Fragments of alpha1-casein
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 ?
alpha1-casein + H2O
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 Lactobacillus helveticus fragments of alphas1-casein
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 ?
N-succinyl-Ala-Ala-Pro-Phe-4-nitroanilide + H2O synthetic substrate Lactobacillus helveticus N-succinyl-Ala-Ala-Pro-Phe + 4-nitroaniline
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 ?
succinyl-Ala-Ala-Pro-Phe-p-nitroanilide + H2O synthetic substrate Lactobacillus helveticus ?
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 ?

Synonyms

Synonyms Comment Organism
cell envelope proteinase
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 Lactobacillus helveticus
PrtH Lactobacillus helveticus can possess one or two cell envelope proteinases called PrtH2 and PrtH Lactobacillus helveticus
PrtH2 Lactobacillus helveticus can possess one or two cell envelope proteinases called PrtH2 and PrtH Lactobacillus helveticus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40
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 assay at Lactobacillus helveticus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
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 assay at Lactobacillus helveticus