Abstract: The present invention provides a computational method for designing artificial variants which have activity towards non-natural substrates. The present invention provides a special method to process stability evaluation results and creatively combines a process of calculating free energy barrier, which can improve the accuracy of the virtual screening of enzyme variants. The computational method disclosed by this invention greatly reduce the number of variants to be constructed and tested in the wet lab. In some cases, this method achieved the effect of enzyme engineering that cannot be achieved by traditional directed enzyme evolution methods.

Abstract: The present invention provides ketoreductase variants having activity on both (R)-(?)-1,3-butanediol and (S)-(+)-1,3-butanediol, and the computational methodology for designing the above mentioned ketoreductase variants. The ketoreductase variants disclosed in the present application can catalyze the reaction of synthesizing 4-hydroxy-2-butanone from racemic 1,3-butanediol, which has industrial application prospects.

Abstract: A method for making intermediate compounds suitable for making muscenone, the compositions made by said methods, the various uses of said compositions, and enzyme variants useful in said methods.

Abstract: Provided are amino acid sequences of ketoreductase polypeptides that are useful for asymmetrically synthesizing chiral alcohol compounds, its preparation process as well as reaction process under industrial-relevant conditions. Also provided are polynucleotide sequences encoding engineered ketoreductase polypeptides, engineered host cells capable of expressing engineered ketoreductase polypeptides, and methods of producing chiral alcohol compounds using engineered ketoreductase polypeptides. Compared to other enzymes, the engineered ketoreductase polypeptides provided by the invention have better catalytic activity and thermal stability, allowing purification of the enzyme solution by heat treatment, which is advantageous for the production of enzymes and the industrial application of enzymatic reactions.

Abstract: The present invention disclosed a red-light-mediated nucleic acid anchoring fluorescent probe and its preparation method and application. The fluorescent probe has the capability of taking a crosslinking reaction with RNA in cytoplasm under singlet oxygen mediation, and imaging of tumor tissues in a long window period is achieved. Moreover, it is found that by means of the probe, after crosslinking of RNA, a severe apoptosis phenomenon of tumor cells occurs, and the integration of diagnosis and treatment of tumors is achieved.

Abstract: The present invention discloses H2O2 responsive crosslinking NIR molecular probe for tumor microenvironment and application therefor. The preparation method includes the following steps: the amide condensation of 2-propynylamine and Fmoc-Lys(Boc)-OH to obtain compound A01-01; removing protecting groups from compound A01-01, to obtain compound C1-2; reacting compound C1-2 and NHS-activated (3-carboxypropyl)triphenylphosphonium bromide, to obtain compound C1-3; removing protecting groups from compound C1-3, to obtain compound C1-4; reacting compound C1-4 with NHS-activated 3,5-dioxocyclohexane carboxylic acid, to obtain a compound C1-5; and reacting compound C1-5 with NIR dye, to obtain a H2O2 responsive crosslinking NIR molecular probe for tumor microenvironment.

Abstract: The development of fluorescent bioprobes comprising organic fluorescent compounds that exhibit aggregation induced emission (AIE) properties, methods of producing the same, and their practical applications for in vitro and in vivo bioimaging.

Abstract: The present invention discloses a probe useful for the selective detection of metallo-beta-lactamases, in particular carbapenemases, thereby distinguishing those species of bacteria that are carbapenem-resistant from bacterial strains that are sensitive. Cephalospori based probes that have the 6,7 R,R configuration are susceptible to cleavage by beta-lactamases but cannot distinguish between cleavage by metallo-beta-lactamases and other beta-lactamases. By modifying a side group of the cephalosporin, selectivity can be introduced allowing the probes to distinguish between various types of metallo-beta-lactamases.

Abstract: The present invention discloses a probe useful for the selective detection of metallo-beta-lactamases, in particular carbapenemases, thereby distinguishing those species of bacteria that are carbapenem-resistant from bacterial strains that are sensitive. Cephalospori based probes that have the 6,7 R,R configuration are susceptible to cleavage by beta-lactamases but cannot distinguish between cleavage by metallo-beta-lactamases and other beta-lactamases.

Abstract: The development of a series of fluorescent materials including heterocycle-functionalized luminogens with aggregation-induced/enhanced emission (AIE/AEE), long wavelength emission, and high solid state fluorescence quantum efficiency is contemplated. The described fluorescent materials are promising candidates in selective luminescence-based chemosensor for Hg2+ or ATP, fluorescent staining for mitochondria in living cells with high photostability, stimuli-responsive luminescent materials, and materials for optical waveguides. In addition, these heterocycle-functionalized luminogens are particularly useful as fluorescent labels for biopolymers such as peptides, antibodies, or nucleic acids, making them useful as AIE-active biocompatible probes for clinical cancer imaging and diagnostics.

Abstract: The development of a series of fluorescent materials including heterocycle-functionalized luminogens with aggregation-induced/enhanced emission (AIE/AEE), long wavelength emission, and high solid state fluorescence quantum efficiency is contemplated. The described fluorescent materials are promising candidates in selective luminescence-based chemosensor for Hg2+ or ATP, fluorescent staining for mitochondria in living cells with high photostability, stimuli-responsive luminescent materials, and materials for optical waveguides. In addition, these heterocycle-functionalized luminogens are particularly useful as fluorescent labels for biopolymers such as peptides, antibodies, or nucleic acids, making them useful as AIE-active biocompatible probes for clinical cancer imaging and diagnostics.

Abstract: The development of fluorescent bioprobes comprising organic fluorescent compounds that exhibit aggregation induced emission (AIE) properties, methods of producing the same, and their practical applications for in vitro and in vivo bioimaging.

Abstract: Provided herein are biosensors that comprise a biological signal source linked to a substrate by a peptide nucleic acid spacer and methods of use of the biosensor. In one embodiment, the biosensor is used to detect prostate-specific antigen.

Abstract: Provided herein are biosensors that comprise a biological signal source linked to a substrate by a peptide nucleic acid spacer and methods of use of the biosensor. In one embodiment, the biosensor is used to detect prostate-specific antigen.