Streptomyces olivochromogenes

Endoxylanase produced by a transformant strain of Escherichia coli has been shown to decrease the kappa number and increase the brightness of pulp in an enzymatic pretreatment followed by chemical extraction (27). Beta-xylosidase, on the other hand, had no effect in the treatment. The mannanase produced by Bacillus suhtilis was found to be equally effective as the xylanase. The specificities of mannanases produced by two different organisms, however, differed considerably 49). Enrichment of the culture broth of Streptomyces olivochromogenes, containing mainly endoxylanase, with different pure enzymes or enzyme mixtures acting on side chains and other hemicelluloses, resulted only in slight increases in brightness and in kappa number reduction (55). 

Agaricus bisporus Pleurotus ostreatus Trichoderma reesei Trichoderma spp. Schizophyllum commune Aspergillus awamori Aspergillus niger Tyromyces palustris Streptomyces flavogriseus Streptomyces olivochromogenes Streptomyces spp,... 

Glucose Isomerase (Actinoplanes missouriensis, Bacillus coagu-lans, Streptomyces olivaceus, Streptomyces olivochromogenes,... 

Glassy Sodium Polyphosphates, 55 a-D-Glucopyranosyl-1,4-D-glucitol, 33 Glucose Isomerase (Actinoplanes missouriensis, Bacillus coagulans, Streptomyces olivaceus, Streptomyces olivochromogenes, Microbacteruim arborescens, Streptomyces... 

A DuPont Biometer, Model 760, was employed to determine the viable microbe count for all organisms except Streptomyces olivochromogenes. and Penicillium chrysogenum. We employed a protein determination utilizing the Polin reagent for determining the loadings of the latter two microbes. 

The presence of feruloyl esterase activity was first detected in culture filtrates of Streptomyces olivochromogenes grown on oats spelt xylan and wheat bran (iJ) and have subsequently been found in a number of bacterial and fungal... 

In contrast, in their pubhcation on crystallographic studies of xylose isome-rase from Streptomyces olivochromogenes, Petsko and co-workers [53] came to the conclusion that a hydride shift mechanism (Scheme 11) agreed better with their findings from experiments also conducted under steady-state conditions by use of a flow cell, than the classical enediol pathway. 

Farber GK, Petsko GA, Ringe D (1987) The 3.0 A crystal structure of xylose isomerase from Streptomyces olivochromogenes. Protein Eng 1 459-466 Filloux A, Michel G, Bally M (1998) GSP-dependent protein secretion in Gram-negative bacteria the Xcp system of Pseudomonas aeruginosa. FEMS Microbiol Rev 22 177-198... 

In 1955, Corbaz and coworkers isolated an antibiotic from Streptomyces viridochromogenes and Streptomyces olivochromogenes which was named nonactin. The antibiotic was unusual because it was a neutral, optically inactive solid. In addition to nonactin, three homologs named monactin, dinactin, and triactin were subsequently isolated. This class of antibiotics is called the actins (Fig. 1). 

---