Production of extracellular proteolytic enzymes by phototrophic bacteria
نویسندگان
چکیده
منابع مشابه
The Proteolytic Enzymes of Bacteria
A great deal of work has been done on the proteolytic enzymes of bacteria, especially those enzymes which are secreted into the medium by the living cell or as the result of its autolysis. The proteolytic enzymes of the cells themselves, however, have been less studied. Studies on bacterial peptidases in which substrates of known formulae (such as synthetic peptides) have been used, are few and...
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Bacteria in the genus Vibrio produce extracellular proteolytic enzymes to obtain nutrients via digestion of various protein substrates. However, the enzymes secreted by human pathogenic species have been documented to modulate the bacterial virulence. Several species including Vibrio cholerae and V. vulnificus are known to produce thermolysin-like metalloproteases termed vibriolysin. The vibrio...
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Halobacterium strains produce a truly extracellular proteinase which degrades gelatine and casein. It has a pH optimum of about 8 and depends upon divalent cations and a high concentration of NaCl or KC1 for activity and stability. Proteolytic enzymes were also found in cell homogenates obtained by ultra sonic treatment. A caseinolytic enzyme, probably different from the extracellular one, is a...
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A fungal isolate with capability to grow in keratinous substrate as only source of carbon and nitrogen was identified as Aspergillus niger using the sequencing of the ITS region of the rDNA. This strain produced a slightly acid keratinase and an acid protease during cultivation in feather meal. The peak of keratinolytic activity occurred in 48 h and the maximum proteolytic activity in 96 h. The...
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During the course of survey of halophilic microorganisms, a total of sixteen bacterial isolates were obtained from coastal solar salterns of Orissa and West Bengal, India. Morphological, physiological and biochemical characteristics of these isolates indicate that majority of them belong to the genus Halomonas, however, members belonging to Cobetia and Halococcus were not uncommon. These isolat...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1977
ISSN: 0378-1097
DOI: 10.1016/0378-1097(77)90077-5