摘要:
The invention provides variants of the Aspergillus japonicus β-fructofuranosidase enzyme which have been modified so as to improve synthesis of inulin-type fructooligosaccharides (FOS) from sucrose. One or more substitutions may be made to the parent β-fructofuranosidase polypeptide at amino acid positions 121, 159, 302 and/or 471 of the mature peptide (SEQ ID NO: 3), corresponding to crystal positions 140, 178, 321 and 490. A method of synthesizing FOS using the variants is also claimed.
摘要翻译:本发明提供了已被修饰以改善由蔗糖合成菊糖型低聚果糖(FOS)的日本曲霉β-呋喃果糖苷酶的变体。 可以在成熟肽(SEQ ID NO:3)的氨基酸位置(121,159,302和/或471)处对亲本β-呋喃果糖苷酶多肽进行一个或多个取代,其对应于结晶位置(140,178, 321和490)。 要求保护使用这些变体合成FOS的方法。
摘要:
The invention disclosed herein relates to the use of an extract of Dodonaea viscosa in breast cancer therapy, either alone or in combination with other breast cancer therapies.
摘要:
The present invention is directed to a yeast strain, or strains, secreting a full suite, or any subset of that full suite, of enzymes to hydrolyze corn starch, corn fiber, lignocellulose, (including enzymes that hydrolyze linkages in cellulose, hemicellulose, and between lignin and carbohydrates) and to utilize pentose sugars (xylose and arabinose). The invention is also directed to the set of proteins that are well expressed in yeast for each category of enzymatic activity. The resulting strain, or strains can be used to hydrolyze starch and cellulose simultaneously. The resulting strain, or strains can be also metabolically engineered to produce less glycerol and uptake acetate. The resulting strain, or strains can also be used to produce ethanol from granular starch without liquefaction. The resulting strain, or strains, can be further used to reduce the amount of external enzyme needed to hydrolyze a biomass feedstock during an Simultaneous Saccharification and Fermentation (SSF) process, or to increase the yield of ethanol during SSF at current saccharolytic enzyme loadings. In addition, multiple enzymes of the present invention can be co-expressed in cells of the invention to provide synergistic digestive action on biomass feedstock. In some aspects, host cells expressing different heterologous saccharolytic enzymes can also be co-cultured togetherand used to produce ethanol from biomass feedstock.
摘要:
A height adjustable pylon (2, 15) and supporting frame assembly (1) is provided. The frame includes two frame members (3) meeting at a corner with the frame members being generally co-planar and the pylon (2, 15) being urged into the corner so as to extend at generally right angles to a plane including the two frame members. A fastener assembly has two end portions (23) each anchored relative its associated frame member so as to extend transversely to it. The fastener assembly (21) includes an intermediate saddle portion (22) engaging a surface of the pylon (2) that is directed outwardly relative to the corner with the pylon being urged into the corner when the fastener assembly is tightened to engage the pylon and lock it axially relative to the frame members (3) in a selected position. Preferably, the frame members each form two upper and two lower frame members of two trusses. Lower ends of the pylons may support the assembly.
摘要:
A support structure (10) for carrying a plurality of heliostats (12) is provided. The support structure (10) includes a frame (20) formed from a number of girders (22). The frame has a triangular outer perimeter and a plurality of mountings (26) for carrying the heliostats (12) are provided along the perimeter. At least one mounting (26) is provided at or near each vertex (16) of the triangular outer perimeter of the frame (20), and at least one additional mounting (26) is provided part-way along each side (17) of the triangular outer perimeter of the frame (20).
摘要:
A polymer compound (I) with bacteria-adhesion inhibition properties against bacteria such as P. aeruginosa Xen 5, E. coli Xen 14, S. typhimurium Xen 26, S. aureus Xen 36 and K. pneumoniae Xen 39 is described. The group R is provided by a substituted furanone linked by an alkyl chain or, more preferably a hydrophilic moiety such as oligo(ethylene oxide) ((CH 2 -CH 2 -O) i ) to the polymer backbone. The group R may be the same or different along the polymer backbone. The invention also provides nanofibres and coatings which include a polymer compound as defined above.
摘要:
A central receiver for a solar power facility is provided comprising an arrangement of heat absorber tubes located in a chamber having a window that, in use, is to receive solar radiation reflected by a heliostat field. The heat absorber tubes extend transversely relative to the window and are connected into a working fluid circuit. The window forms an atmospheric air inlet and the chamber has an outlet in a region opposite the window. An air flow promoting fan induces a flow of atmospheric air inwards through the window, past the absorber tubes; and through the outlet. The receiver preferably includes multiple rows of unpressurized louvers or panes having oblique frontal surfaces such that reflected rays travel into the chamber and provide a leading row in which the temperature of the louvers is, under operating conditions, maintained at a level low enough to reduce thermal reflection and radiation losses.
摘要:
A sweat measuring device (1) comprising a sweat impermeable panel (40) and an adhesive skirt on one side thereof extending about its periphery to enable the panel to be secured to a user's skin is provided. The device covers a known area of a user's skin and traps sweat (42) produced by the skin under the panel. The panel (40) defines a reservoir in which sweat can accumulate and calibrations which may be associated with the reservoir to express the total sweat produced by the user as a function of the volume of sweat in the reservoir. The panel may be relatively stiff; formed by a plastics member and the skirt may extend integrally from the panel or be provided by an adhesive patch which covers the panel.
摘要:
Compositions containing one or more tyrocidines, tryptocidines, phenycidines and/or gramicidin S, or derivatives and analogues thereof, are described for controlling antimicrobial growth on plants, plant material or plant growth media, and methods for controlling or preventing the growth of microbial pathogens, and in particular fungal pathogens, on plants, plant parts and plant material are described herein. The active agents used to control these pathogens are tyrocidines, tryptocidines, phenycidines and/or gramicidin S, or derivatives, analogues or modifications thereof. The tyrocidines, tryptocidines, phenycidines and/or gramicidin S are cyclic decapeptides having the general amino acid sequence cyc/o(valine-Xrleucine-D-phenylalanine- proline-X 2 -X 3 -X 4 -X 5 -X 6 ) (SEQ ID NO: 1 ) or a derivative or analogue thereof, wherein X 1 is ornithine or lysine, X 2 is valine, leucine, isoleucine, phenylalanine, tryptophan or tyrosine; X 3 is the D-isomer of valine, leucine, isoleucine, phenylalanine, tryptophan, tyrosine, ornithine, or lysine; X 4 is asparagine, glutamine or leucine; X 5 is glutamine, the D-isomer of valine, leucine, or isoleucine; and X6 is tyrosine, phenylalanine, tryptophan or proline.