摘要:
Compositions and methods are disclosed relating to use of fractions, polysaccharides, and oligosaccharides of Dendrobium huoshanense. The fractions, polysaccharides, and oligosaccharides are able to effect an increase in beneficial cytokines and chemokines.
摘要:
Compositions and methods are disclosed relating to use of fractions, polysaccharides, and oligosaccharides of Dendrobium huoshanense. The fractions, polysaccharides, and oligosaccharides are able to effect an increase in beneficial cytokines and chemokines.
摘要:
Moenomycin inhibits bacterial growth by clocking the transglycosylase activity of class A penicillin-binding proteins (PBPs), which are key enzymes in bacterial cell wall synthesis. The binding affinities of moenomycin A with various truncated PBPs were compared showing that the transmembrane domain is important for moenomycin binding. Full-length class-A PBPs from 16 bacterial species were produced, and their binding activities showed a correlation with the antimicrobial activity of moenomycin against Enterococcus faecalis and Staphylococcus aureus. Moreover, a fluorescence anisotropy-based high-throughput assay was developed and used successfully for identification of transglycosylase inhibitors.
摘要:
Moenomycin inhibits bacterial growth by clocking the transglycosylase activity of class A penicillin-binding proteins (PBPs), which are key enzymes in bacterial cell wall synthesis. The binding affinities of moenomycin A with various truncated PBPs were compared showing that the transmembrane domain is important for moenomycin binding. Full-length class-A PBPs from 16 bacterial species were produced, and their binding activities showed a correlation with the antimicrobial activity of moenomycin against Enterococcus faecalis and Staphylococcus aureus. Moreover, a fluorescence anisotropy-based high-throughput assay was developed and used successfully for identification of transglycosylase inhibitors.
摘要:
The present invention provides human tyrosine-DNA phosphodiesterases (TDPs). In particular, the present invention provides novel recombinant nucleic acids and proteins, including mutant TDPs, vectors, and TDP-producing cells, as well as co-factors for enzyme activity. The present invention further provides methods for high through-put enzymatic assay systems utilizing the TDPs of the present invention.
摘要:
Compositions and methods for identifying agents that inhibit protease activity are provided. In particular, polynucleotides, recombinant expression vectors, and host cells are provided that may be used in a bacterial cell-based assay for identifying agents that are inhibitors of protease activity, such as inhibitors of HIV protease activity. The bacterial cells express a precursor of a protease and encode a reporter polypeptide that contains a protease recognition sequence, which can be cleaved by the mature, catalytically active protease such that the reporter activity of the reporter polypeptide is decreased or eliminated.