STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA

Apparently the extracellular protease of S. marcescens is present in protein- or protein derivative-free media only when the conditions favor an abundant growth and bacterial conglomerates are formed, which possibly could be explained by assuming that the proteins of dead bacteria or proteic metabol...

Descripción completa

Detalles Bibliográficos
Autor principal: Castañeda-Agulló, M.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1956
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147537/
https://www.ncbi.nlm.nih.gov/pubmed/13286455
_version_ 1782144462807367680
author Castañeda-Agulló, M.
author_facet Castañeda-Agulló, M.
author_sort Castañeda-Agulló, M.
collection PubMed
description Apparently the extracellular protease of S. marcescens is present in protein- or protein derivative-free media only when the conditions favor an abundant growth and bacterial conglomerates are formed, which possibly could be explained by assuming that the proteins of dead bacteria or proteic metabolic products act as inducers of protease formation. Dilute solutions of gelatin induce the production of proteolytic activity after a short period of time and its rapid increase before the initial number of bacteria has been duplicated. Calcium is necessary to preserve the activity of the enzyme formed in synthetic media but not that produced in gelatin.
format Text
id pubmed-2147537
institution National Center for Biotechnology Information
language English
publishDate 1956
publisher The Rockefeller University Press
record_format MEDLINE/PubMed
spelling pubmed-21475372008-04-23 STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA Castañeda-Agulló, M. J Gen Physiol Article Apparently the extracellular protease of S. marcescens is present in protein- or protein derivative-free media only when the conditions favor an abundant growth and bacterial conglomerates are formed, which possibly could be explained by assuming that the proteins of dead bacteria or proteic metabolic products act as inducers of protease formation. Dilute solutions of gelatin induce the production of proteolytic activity after a short period of time and its rapid increase before the initial number of bacteria has been duplicated. Calcium is necessary to preserve the activity of the enzyme formed in synthetic media but not that produced in gelatin. The Rockefeller University Press 1956-01-20 /pmc/articles/PMC2147537/ /pubmed/13286455 Text en Copyright © Copyright, 1956, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Castañeda-Agulló, M.
STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA
title STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA
title_full STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA
title_fullStr STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA
title_full_unstemmed STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA
title_short STUDIES ON THE BIOSYNTHESIS OF EXTRACELLULAR PROTEASES BY BACTERIA : I. SERRATIA MARCESCENS. SYNTHETIC AND GELATIN MEDIA
title_sort studies on the biosynthesis of extracellular proteases by bacteria : i. serratia marcescens. synthetic and gelatin media
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147537/
https://www.ncbi.nlm.nih.gov/pubmed/13286455
work_keys_str_mv AT castanedaagullom studiesonthebiosynthesisofextracellularproteasesbybacteriaiserratiamarcescenssyntheticandgelatinmedia

Ejemplares similares