Degradative Pathway of L-Leucine in Proteus vulgaris
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چکیده
منابع مشابه
Induced formation of leucine decarboxylase in Proteus vulgaris.
1. The serum myeloma protein and urinary Bence-Jones protein of mice carrying the MPC-2 plasma-cell neoplasm have been purified by chromatography on ion-exchange diethylaminoethylcellulose and characterized. 2. The neoplastic plasma cells were found to form both proteins. Biosynthesis was studied by incubating sliced tumour tissue in vitro and following the incorporation of [14C]amino acids int...
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A bacteriphage typing scheme for differentiating Proteus isolated from clinical specimens was developed. Twenty-one distinct patterns of lysis were seen when 15 bacteriophages isolated on 8 Proteus mirabilis, 1 P. vulgaris, and 1 P. morganii were used to type 162 of 189 (85.7%) P. mirabilis and P. vulgaris isolates. Seven phages isolated on 3 P. morganii were used to type 13 of 19 (68.4%) P. mo...
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The name Proteus penneri sp. nov. is proposed for a group of organisms previously called Proteus vulgaris indole negative or P. vulgaris biogroup 1. All of these strains were salicin negative, esculin negative, and chloramphenicol resistant (zone size, less than 14 mm). DNA relatedness studies indicated that when DNA from P. penneri strain 1808-73 was labeled and tested against unlabeled DNA fr...
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This work aimed to develop a whole-cell biotransformation process for the production of α-ketoisocaproate from L-leucine. A recombinant Escherichia coli strain was constructed by expressing an L-amino acid deaminase from Proteus vulgaris. To enhance α-ketoisocaproate production, the reaction conditions were optimized as follows: whole-cell biocatalyst 0.8 g/L, leucine concentration 13.1 g/L, te...
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In Bacillus subtilis the reduction of potassium tellurite and of tetranitro-blue tetrazolium (TNBT) give comparable results: reduced products appear deposited in particular membranous organelles. For this reason these specialized organelles are considered to be chondrioids (1-3). In the Gram-negative Proteus vulgaris similar membranous structures were never observed by us (4, 5). Therefore it i...
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ژورنال
عنوان ژورنال: Nature
سال: 1961
ISSN: 0028-0836,1476-4687
DOI: 10.1038/189400a0