Methyl ester of hyaluronate is unable to stimulate exolipase formation by Serratia marcescens.
نویسندگان
چکیده
Hyaluronate stimulated the formation of exolipase by Serratia marcescens. This ability was abolished when all carboxyl groups of hyaluronate were methyl esterified. Additional studies suggested that the biological inactivity of esterified hyaluronate should be ascribed to the reduced conformational order of the molecules rather than to their electroneutrality.
منابع مشابه
Glycogen, hyaluronate, and some other polysaccharides greatly enhance the formation of exolipase by Serratia marcescens.
Among 21 different polysaccharides tested, 5 greatly enhanced the spontaneous and cyclic AMP-induced formation of exolipase: glycogen, hyaluronate, laminarin, pectin B, and gum arabic. These polysaccharides have in common the tendency to form highly ordered networks because of the branching or helical arrangement, or both, of their molecules. None of the polysaccharides could be utilized by the...
متن کاملThe inhibitory effect of a Lactobacillus acidophilus derived biosurfactant on Serratia marcescens biofilm formation
Objective(s):Serratia marcescens is one of the nosocomial pathogen. The ability to form biofilm is an important feature in the pathogenesis of S. marcescens. The aim of this study was to determine the anti-adhesive properties of a biosurfactant isolated from Lactobacillus acidophilus ATCC 4356, on S. marcescens strains. Materials and Methods: Lactobacillus acidophilus ATCC 4356, was selected a...
متن کاملDefects in prodigiosin formation by L-forms of Serratia marcescens.
An L-form of Serratia marcescens has previously been shown incapable of producing the red pigment, prodigiosin, characteristic of the parent bacteria. Mutants of S. marcesens, unable to form one or the other of the two prodigiosin precursors, 4-methoxy-2,2'-bipyrrole-5-carboxaldehyde or 2-methyl-3-n-amylpyrrole, were used to test the nature of the L-form defect. The L-forms failed to form suffi...
متن کاملEnhanced production of prodigiosin by Serratia marcescens MO-1 using ram horn peptone
This work addresses the production of prodigiosin from ram horn peptone (RHP) using MO-1, a local isolate in submerged culture. First, a novel gram-negative and rod-shaped bacterial strain, MO-1, was isolated from the body of the grasshopper (Poecilemon tauricola Ramme 1951), which was collected from pesticide-contaminated fields. Sequence analysis of 16S rDNA classified the microbe as Serratia...
متن کاملSerratia marcescens B4A Chitinase Product Optimization Using Taguchi Approach
Chitinase production by newly isolated Serratia marcescens B4A was optimized following Taguchi’sarray methods. Twenty-three bacterial isolates were screened from shrimp culture ponds in the South ofIran. A chitinase-producing bacterium was isolated based on it’s ability to utilize chitin as the sole carbonsource. The isolate designated as B4A, was identified as Serratia marces...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of bacteriology
دوره 139 3 شماره
صفحات -
تاریخ انتشار 1979