Proteolysis by Lactobacillus casei

Brandsaeter, E.

doi:10.31274/rtd-180813-14585

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…Earlier investigations report the presence of various kind of proteinases which are active toward as I-and 13-casein with extremely variable intensity from one strain to another (Brandsaeter and Nelson, 1956). However, lactococci were found to possess…”

Section: Proteinasesmentioning

confidence: 99%

Proline-Specific Peptidases of Lactobacillus casei Subspecies

Najafi

Lee

1994

Journal of Dairy Science

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Section: Proteinasesmentioning

confidence: 99%

Proline-Specific Peptidases of Lactobacillus casei Subspecies

Najafi

Lee

1994

Journal of Dairy Science

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“…The corrected traces are then stacked in the usual way. This method has been discussed by Michon, Wlodarczak, and Merland (1971) and by Brandsaeter and Ursin (1977). A subtraction method based on feedback has been proposed by Koehler, Krey, and Wachholz (1974).…”

Section: Introductionmentioning

confidence: 99%

Attenuation of Coherent Noise in Marine Seismic Exploration Using Very Long Arrays *

Ursin

1978

Geophysical Prospecting

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The use of arrays to separate primary reflections from unwanted coherent seismic events is common practice in land seismic surveys. Very long source and receiver arrays have been used recently to reduce the effects of waterbottom multiples on marine seismic data. The source array consists of five uniformly spaced identical subarrays, each with five different airguns, where the distance between the subarrays may vary from 20 m56 m. The volume of each subarray is 10.3 1 (630 cu.in.) which gives a total volume of the array of 51.5 1 (3150 cu.in.) operated at a pressure of 14 MPa (2000 psi). In order to have a flexible receiver system it was decided to implement the extended receiver array in data processing by computing a weighted sum of two to five traces. The hydrophone cable consists of fifty‐four channels with a group length of 50 m. Data shot with the superlong airgun array are processed by a combination of standard techniques and special procedures. In particular, the quality of the stack section is improved by using a weighted stack. The stack weights are computed by a program which takes into account the primary‐to‐multiple ratio. Comparisons with conventional data show significant improvements in data quality obtained by using the superlong airgun array. Examples show that the waterbottom multiples have been strongly attenuated and the deep seismic events have been enhanced. The combined array response function for dipping events is given in an appendix.

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“…On polyacrylamide gel, the peptidase activity of L. plantarum appeared as one band only, probably of a carboxypeptidase.The proteolytic system in the lactic streptococci was investigated thoroughly because they ere important in the maturation of cheese, Lactobacilli, the usually accompanying microorganisms, however, received little attention. BRANDSAETER and NELSON (1956) have found that cell-free extracts of L. casei possess two or more peptidase systems with overlapping specificities. Several di-and tripeptides containing glycine, leucine, tyrosine, tryptophan or alanine were hydrolyzed.Peptidases in lactobecilli have been studied in detail recently (ELSODA and DESMA-ZEAUD 1981, 1982, .…”

mentioning

confidence: 99%

“…BRANDSAETER and NELSON (1956) have found that cell-free extracts of L. casei possess two or more peptidase systems with overlapping specificities. Several di-and tripeptides containing glycine, leucine, tyrosine, tryptophan or alanine were hydrolyzed.…”

mentioning

confidence: 99%

Peptidases of Lactobacillus casei and L. plantarum

Abo‐Elnaga

Plapp

1987

J. Basic Microbiol.

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Fractionation of cell-free extracts of Lactobacillus casei NCDO 151 (grown in Man's et al. (1960) broth) by polyacrylamide disc electrophoresis showed the presence of 4 constitutive peptidases. The enzymes appear to be a tripeptidase with a narrow substrate specificity, two true dipeptidases with identical broad-specificity, and a probable carboxypeptidase with broad-specificity. A probable amino peptidase could also be isolated from the cell-free extract by density gradient electrofocusing. Growth of the organism in skim milk resulted in the formation of two inducible dipeptidases. Examination of 5 other strains of L. casei for the presence of the two constitutive dipeptidases and the carboxypeptidase confirmed the results obtained for the species. Some strains, however, had one more peptidase. The peptidases of the strains differed relatively in the activity and substrate specificity from strain to strain. On polyacrylamide gel, the peptidase activity of L. plantarum appeared as one band only, probably of a carboxypeptidase.

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Proteolysis by Lactobacillus casei

Cited by 4 publications

References 7 publications

Proline-Specific Peptidases of Lactobacillus casei Subspecies

Proline-Specific Peptidases of Lactobacillus casei Subspecies

Attenuation of Coherent Noise in Marine Seismic Exploration Using Very Long Arrays *

Peptidases of Lactobacillus casei and L. plantarum

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