Patent application number | Description | Published |
20100160608 | PROTEIN STABILIZER - An excellent protein stabilizer is provided, which has the following effects: (1) low probability with contamination of pathogens, (2) the effect of stabilization on photoproteins, and (3) minimization of loss of activity under lyophilizing conditions. A peptide from fish is used as the active ingredient for the protein stabilizer. | 06-24-2010 |
20100273202 | CODON-OPTIMIZED NUCLEIC ACID FOR CODING APO-CLYTIN-II AND METHOD FOR USING THE SAME - A codon-optimization of nucleic acid for coding apo-clytin-II protein is provided. Luminescent activity of clytin-II is remarkably enhanced. Accordingly, compared with the conventional use of the wild-type clytin-II, an intracellular calcium ion can be detected much more easily. | 10-28-2010 |
20110070656 | Fluorescent Proteins - A fluorescent protein (bFP) having chemiluminescence activity is a complex composed of the apoprotein of a calcium-binding photoprotein, coelenteramid or an analog thereof, and calcium ions or divalent or trivalent ions that can be substituted for the calcium ions. In the complex, the ratio of the number of molecules of the apoprotein to that of the coelenteramid is 1:1 and the ratio of the number of molecules of the apoprotein to that of the divalent or trivalent ions is 1:1 to 1:4. The fluorescent protein is used as a marker because it catalyzes luminescence of coelenterazine and has fluorescence capability. Removal of calcium ions etc. from this fluorescent protein (bFP) having luminescence activity provides a novel fluorescent protein (gFP). Mixing this gFP with the coelenterazine provides a calcium-binding photoprotein, which emit light instantaneously, enabling use as a marker. | 03-24-2011 |
20110288280 | COELENTERAMIDE ANALOGS - There has been a need for coelenteramide analogs or the like that produce fluorescent proteins which exhibit different fluorescent characteristics from those of the existing fluorescent proteins. Disclosed is a compound represented by general formula (1) (wherein R | 11-24-2011 |
20120035070 | COELENTERAZINE ANALOGS AND MANUFACTURING METHOD THEREOF - There has been a need for coelenterazine analogs that exhibit luminescence properties different from those of known coelenterazine analogs. The present invention provides the compound represented by general formula (1). | 02-09-2012 |
20120232272 | PROCESS FOR PRODUCING v-COELENTERAZINE COMPOUNDS - A simple process for producing v-coelenterazine compounds has been desired. Described is a process for producing a v-coelenterazine compound represented by general formula (II) comprising (1) the step of reacting a compound of general formula (VIII) with a methyltriphenylphosphonium salt in the presence of a base to give a compound represented by general formula (IX), (2) the step of performing a ring-closing metathesis reaction on any one selected from the group consisting of the compound represented by general formula (IX) and a compound of general formula (X) which is the compound of general formula (IX) wherein the amino is protected with R | 09-13-2012 |
20120258465 | MUTANT APOPROTEIN OF PHOTOPROTEIN WITH LOW CALCIUM SENSITIVITY - Calcium-binding photoproteins showing the luminescence pattern with a slow decay of are desired. The invention provides a mutant apoprotein comprising an amino acid sequence wherein the 23rd to 34th amino acids in the amino acid sequence of SEQ ID NO: 2 are substituted with an amino acid represented by formula I below: Xaa23-Xaa24-Xaa25-Xaa26-Xaa27-Xaa28-Xaa29-Xaa30-Xaa31-Xaa32-Xaa33-Xaa 34; having a function to bind to the peroxide of coelenterazine or the peroxide of a coelenterazine analogue to form a photoprotein capable of emitting light under the action of calcium ions; and, having a half decay time of the luminescence emitted by binding of the photoprotein to calcium ions being not less than 2 seconds. | 10-11-2012 |
20130149743 | METHOD FOR ENHANCING LUMINESCENCE INTENSITY OF CLYTIN-II - A method for enhancing a luminescence activity of clytin-II is provided. A codon-optimized nucleic acid is used for coding the apo-clytin-II protein, and the luminescent activity of the clytin-II is remarkably enhanced when comparing with the conventional use of the wild-type clytin-II. | 06-13-2013 |
20130157302 | METHOD FOR DETERMINING CAPABILITY OF A COMPOUND FOR INHIBITING A RECEPTOR USING CODON-OPTIMIZED NUCLEIC ACID - A method for determining a capability of a compound for inhibiting a receptor through a change of intracellular calcium ion when the receptor is activated is provided. Contacting a host cell genetically engineered to express an apo-clytin-II protein generated from a codon-optimized nucleic acid with a test compound, and then determining an amount of light generated. The intracellular calcium ion can be detected much more easily. | 06-20-2013 |
20130281680 | PROCESS FOR PRODUCING COELENTERAMIDE OR AN ANALOG THEREOF - A process for producing coelenteramide or its analog in a high yield has been desired. The invention provides a process for producing di-O-methylcoelenteramide or its analog of formula (3) | 10-24-2013 |
20140024058 | COELENTERAZINE ANALOGS AND MANUFACTURING METHOD THEREOF - There has been a need for coelenterazine analogs that exhibit luminescence properties different from those of known coelenterazine analogs. The present invention provides the compound represented by general formula (1). | 01-23-2014 |
20140065727 | METHOD FOR STABILIZING PROTEIN - An excellent protein stabilizer is provided, which has the following effects: (1) low probability with contamination of pathogens, (2) the effect of stabilization on photoproteins, and (3) minimization of loss of activity under lyophilizing conditions. A peptide from fish is used as the active ingredient for the protein stabilizer. | 03-06-2014 |
20140206868 | PROCESS FOR PRODUCING v-COELENTERAZINE COMPOUNDS - A simple process for producing v-coelenterazine compounds has been desired. Described is a process for producing a v-coelenterazine compound represented by general formula (II) comprising (1) the step of reacting a compound of general formula (VIII) with a methyltriphenylphosphonium salt in the presence of a base to give a compound represented by general formula (IX), (2) the step of performing a ring-closing metathesis reaction on any one selected from the group consisting of the compound represented by general formula (IX) and a compound of general formula (X) which is the compound of general formula (IX) wherein the amino is protected with R | 07-24-2014 |
20140296521 | COELENTERAZINE ANALOGS AND MANUFACTURING METHOD THEREOF - There has been a need for coelenterazine analogs that exhibit luminescence properties different from those of known coelenterazine analogs. The present invention provides the compound represented by general formula ( | 10-02-2014 |
20140329250 | CALCIUM-BINDING PHOTOPROTEIN - The invention provides calcium-binding photoproteins which can detect light emission with a higher sensitivity. The proteins of the invention comprising the amino acid sequence of SEQ ID NO: 2 can be used for the detection and measurement of calcium ions. The proteins of the invention are useful as reporter proteins, luminescent markers, etc. The polynucleotides of the invention are useful as reporter genes, etc. | 11-06-2014 |