Bacillus brevis 47 contains two major cell wall proteins. Each protein forms a hexagonal array in the cell wall. A 4.8-kilobase HindIII fragment of B. brevis 47 DNA cloned into Escherichia coli with pBR322 as a vector directed the synthesis of polypeptides cross-reactive with antibody to the middle wall protein. A 700-base-pair BamHI-HpaI fragment was shown to be the essential region for the sy...

A gene with a high-nucleotide sequence homology to the edeine B1 amidinohydrolase gene of Bacillus brevis was identified in the database of the Bacillus subtilis genome. The gene was isolated, expressed in Escherichia coli, and the gene product was analyzed with regard to the characteristics of its enzyme activity. A 32-kDa protein encoded by the ywhG gene showed a 69.8% amino acid sequence-hom...

Florida red tide brevetoxins are potent sodium channel neurotoxins produced by the dinoflagellate Karenia brevis (K.brevis). When aerosolized, lysed cultures of K. brevis (crude PbTx) cause bronchoconstriction, especially in people withunderlying airway diseases, such as asthma. PbTx2 and PbTx-3 are two of the structurally–related toxins present inhighest concentration during the growth phase o...

Of 87 strains previously identified as Bacillus brevis Migula 1900, 58 had G + C contents of 47.0 to 51.9 mol%, a range that included the G + C content (48.7 mol%) of the type strain. The G + C contents for three other groups consisting of 5, 7, and 17 strains were 37.0 to 41.9, 42.0 to 46.9, and 52.0 mol% or higher, respectively. DNA reassociation studies showed that 25 of the 58 strains with ...

The bacteria of food packaging paper and board were studied. Most of the aerobic strains were spore-formers; members of the genus Bacillus with B. cereus group (B. cereus, B. mycoides, B. thuringiensis), B. polymyxa group (B. polymyxa, B. circulans, B. macerans, B. pabuli), B. brevis and B. licheniformis predominated. The main source of spore-forming bacteria in paper and board was the broke (r...

Soil samples (n=500) collected from different areas of Pakistan were screened for various species of Bacillus by Gram staining, spore staining and by a number of biochemical tests. Seven identified species i.e. B. thuringiensis, B. sphaericus, B. brevis, B. firmus, B. coagulans, B. stearothermophilus and B. megaterium were then administered to the house flies, Musca domestica to ascertain and e...

background: demodex is a genus of mites living predominantly in mammalian pilosebaceous units. they are commonly detected in the skin of face, with increasing numbers in inflammatory lesions. causation between demodex mites and inflammatory diseases, such as rosacea, blepharitis, perioral and seborrhoeic dermatitis or chalazion, is controversially discussed. clinical observations indicate a pri...