Bacillus circulans

Hofmann, B.E., Bender, H., Schulz, G.E. Three-dimensional structure of cyclodextrin glycosyltransferase from Bacillus circulans at 3.4 A resolution. /. Mol. Biol. 209 793-800, 1989. 

Fang, T.J. and Wang, J.M., Extractihility of astaxanthin in a mixed culture of a carotenoid over-producing mutant of Xanthophyllomyces dendrorhous and Bacillus circulans in two-stage hatch fermentation. Process Biochem., 37, 1235, 2002. Rubinstein, L. et al.. Isolation and characterization of Phaffia rhodozyma mutants. Folia Microbiol., 43, 626, 1998. 

Watanabe T, Kobori K, Miyashita K et al 1993 Identification of glutamic acid 204 and aspartic acid 200 in chitinase Al of bacillus circulans WL-12 as essential residues for chitinase activity. J Biol Chem 268 18567-18572... 

Watanabe, T., Uchida, M., Kobori, K and Tanaka, H. (1994) Site-directed mutagenesis of the Asp-197 and Asp-202 residues in chitinase A1 of Bacillus circulans WL-12. Bioscience Biotechnology and Biochemistry 58, 2283-2285. 

Bott, G., and Lingens, F., Microbial Metabolism of Quinoline and Related Compounds. IX. Degradation of 6-Hydroxyquinoline and Quinoline by Pseudomonas Diminuta31/1 FA1 and Bacillus Circulans 31/2 Al. Biol. Chem. Hoppe-Seyler, 1991. 372 pp. 381-383. 

S. Komba and Y. Ito, Novel substrates for efficient enzymatic transglycosyla-tion by Bacillus circulans, Can. J. Chem., 80 (2002) 1174—1185. 

Yilmaz El, Ensari NY (2005) Cadmium biosorption by Bacillus circulans strain EB1. World J Microbiol Biotechnol 21 777-779 Zouboulis AI, Loukidou MX, Matis KA (2004) Biosorption of toxic metals from aqueous solutions by bacteria strains isolated from metal-polluted soils. Process Biochem 39 909-916... 

En me Treatment of LCCs. Purified Bacillus circulans xylanase (specific activity, 110 units/mg protein), purified Coriolus versicolor )9-mannanase (specific activity 179 units/mg protein), purified Thermoascus aurianticum /8-glucosidase (specific activity, 150 units/mg protein), and purified Schizophyllum commune acetyl xylan esterase (AXE specific activity, 180 units/mg protein) were used. Unit activity for xylanase and )9-mannanase was defined as the amount of enzyme catalyzing the release of 1 /xmol reducing power per minute at 50°C and pH 6.0 using oat spelts... 

Figure 1. Amino acid sequences of microbial glycohydrolases. A Aureobasid-iwn sp. endo-xylanase Sc Schizophyllwn commune endo-xylanase C Chainia sp. endo-xylanase Bp Bacillus pumilus endo-xylanase Bs Bacillus subtilis Bacillus circulans endo-xylanase Pf Pseudomonas fluorescens endo-xylanase B alkalophilic Bacillus sp. endo-xylanase Ct Clostridium thermocellum endo-xylanase Cf Cellulomonas fimi cellobiohydrolase Ca Cryptococcus albidus endo-xylanase. Residue numbers are those of the adjacent residue, counting from the N-terminus of the mature protein.

Bacillus circulans was isolated from soil and characterized by Hansen et al. (31) as producing a poly(ManA) specific enzyme. 

Many microorganisms produce enzymes that lyse the cell wall of yeast. The most extensive work has been done with the lytic system from Arthrobacter sp., Cytophaga sp., Oerskovia, Bacillus circulans, Rhizopus, Tri-choderma, Penicillium, Pellicularia sp., Rhizoctonia, and Streptomyces sp. (3-9). 

TABLE 2.12. Proteins Encoded in the Genomic Area Covering Part of the Atr-Cluster of Bacillus circulans ATCC 21558 (Accession Code AJ781030) Supplemented with Data from Bacillus circulans SANK 720703 (Accession Code AB097196) ... 

Vassileva, A., Burhan, N., Beschkov, V. et al.. Cyclodextrin glucanotransferase production by free and agar gel immobilized cells of Bacillus circulans ATCC 21783, Process Biochem., 38 (2003) 1585-1591. 

An export-affinity fusion vector containing the gene cgt encoding cyclomaltodextrin glucanotransferase (CGTase) from Bacillus circulans var. alkalophilus has been described... 

Bakken, A.P., Hill, C.G. and Amnndson, C.H. (1992) Hydrolysis of Lactose in Skim Milk by Immobilized Beta Galactosidase Bacillus-Circulans. Biotechnology and Bioengineering, 39, 408-417. 

Galactosidase Bacillus circulans [MMIMJfMeSOd/bufier (one-phase) Synthesis of N-acetyl-lactosamine 38... 

Bacillus circulans P-galactosidase prefers 1,4-glycosidic bond formation and ha been used in the large-scale synthesis of IV-acetyllactosamine (7). Coupled with a oi2,6-sialyltransferase, the disaccharide 7 was converted to the sialyldisaccharide, which is nc longer subject to the glycosidase-catalyzed hydrolysis, thus improving the yield (set experimental section) [35]. 

Intein/chitin domain Saccharomyces cerevisiae/ Bacillus circulans 55 chitin... 

Ambutyrosin is the another name of butirosin. Ambutyrosin obtained from fermentation broths of Bacillus circulans contains a major proportion of N1-(4-amino-2-hydroxybutyryl)-4-0-2,6-diamino-2,6-didexy-D-glucopyranosyl)-5-0-D-xelofuranosyl-2-deoxystreptamine (ambutyrosin A) and a minor proportion (up to 10-15%) of N1-(4-amino-2-hydroxybutyryl)-4-0-2,6-diamino-2,6-didexy-D-glucopyranosyl)-5-0-D-ribofuranosyl-2-deoxystreptamine (ambutyrosine B). A process for preparation of ambutyrosin by semisynthetic procedure of acylating of 5-p-D-xylofuranosylneamine or 5-p-ribofuranosylneamine is described below. 

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