摘要:
There is provided a HBV precore protein having an ability of forming particles, and a means for determining it. A novel HBV precore protein that forms the virus (like) particles of HBV was identified. The present invention provides this novel HBV precore protein. Furthermore, there are provided core-like particles and virus-like particles formed by this HBV precore protein. These virus-like particles can be used for vaccines and therapeutic agents. The present invention also provides a method of determining the HBV precore protein and a method of determining the anti-HBV precore protein antibody.
摘要:
There is provided a HBV precore protein having an ability of forming particles, and a means for determining it. A novel HBV precore protein that forms the virus (like) particles of HBV was identified. The present invention provides this novel HBV precore protein. Furthermore, there are provided core-like particles and virus-like particles formed by this HBV precore protein. These virus-like particles can be used for vaccines and therapeutic agents. The present invention also provides a method of determining the HBV precore protein and a method of determining the anti-HBV precore protein antibody.
摘要:
This invention relates to a DNA fragment comprising a base sequence encoding a non-A non-B hepatitis-specific antigen polypeptide, said base sequence being obtained using genetic engineering techniques from non-A non-B hepatitis virus RNA which is isolated directly from blood plasma from non-A non-B hepatitis patients, to an expression vector and a transformant for use in the expression of the DNA fragment, to a single strand DNA sequence for PCR primer, and to use of said polypeptide and said single strand DNA sequence in the detection of the non-A non-B hepatitis virus. The recombinant polypeptide and the single strand DNA sequence for PCR primer make it possible to detect the non-A non-B hepatitis virus with extremely high accuracy.
摘要:
A yeast PPIase characterized by possessing following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro stands for L-proline), (2) exhibiting a single molecular weight of about 17,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 6.2 in the isoelectric focusing, and (4) inhibited by CsA;an E. coli PPIase-.beta. characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro for L-proline), (2) exhibiting a single molecular weight of about 20,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 5.0 in the isoelectric focusing, and (4) no being inhibited by CsA;an E. coli PPIase-.alpha. characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro for L-proline), (2) exhibiting a single molecular weight of about 22,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 9.7 in the isoelectric focusing, and (4) not being inhibited by CsA.
摘要:
Disclosed are an HCV gene having higher replication efficiency and higher reinfection efficiency than the known HCV gene of genotype 1b, an RNA replicon having this gene, a cell infected with this RNA replicon, which cell allows replication of HCV, and an HCV particle. The hepatitis C virus gene encodes an amino acid sequence wherein the 979th amino acid is threonine; the 1804th amino acid is leucine; and the 1966th amino acid is lysine. An HCV gene which can propagate in vitro and has higher replication efficiency and higher reinfection efficiency than the known HCV gene of genotype 1b was provided.
摘要:
An HCV/GBV-B chimeric virus which maintains the replication function of HCV and is capable of infecting tamarin is disclosed in order to construct an HCV animal model which can be used as a development or evaluation system for therapeutic agents for HCV. The HCV/GBV-B chimeric RNA comprises an RNA of hepatitis C virus and an RNA of GB virus-B, wherein the RNA of hepatitis C virus comprises an RNA encoding leucine at the 1804th position and lysine at the 1966th position in the amino acid sequence of the polyprotein of hepatitis C virus.
摘要:
Disclosed are an HCV gene having higher replication efficiency and higher reinfection efficiency than the known HCV gene of genotype 1b, an RNA replicon having this gene, a cell infected with this RNA replicon, which cell allows replication of HCV, and an HCV particle. The hepatitis C virus gene encodes an amino acid sequence wherein the 979th amino acid is threonine; the 1804th amino acid is leucine; and the 1966th amino acid is lysine. An HCV gene which can propagate in vitro and has higher replication efficiency and higher reinfection efficiency than the known HCV gene of genotype 1b was provided.
摘要:
This invention relates to a DNA fragment comprising a base sequence encoding a non-A non-B hepatitis-specific antigen polypeptide, said base sequence being obtained using genetic engineering techniques from non-A non-B hepatitis virus RNA which is isolated directly from blood plasma from non-A non-B hepatitis patients, to an expression vector and a transformant for use in the expression of the DNA fragment, to a single strand DNA sequence for PCR primer, and to use of said polypeptide and said single strand DNA sequence in the detection of the non-A non-B hepatitis virus. The recombinant polypeptide and the single strand DNA sequence for PCR primer make it possible to detect the non-A non-B hepatitis virus with extremely high accuracy.
摘要:
A yeast PPIase characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro stands for L-proline), (2) exhibiting a single molecular weight of about 17,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 6.2 in the isoelectric focusing, and (4) inhibited by CsA;an E. coli PPIase-.beta. characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro for L-proline), (2) exhibiting a single molecular weight of about 20,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 5.0 in the isoelectric focusing, and (4) no being inhibited by CsA;an E. coli PPIase-.alpha. characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro for L-proline), (2) exhibiting a single molecular weight of about 22,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 9.7 in the isoelectric focusing, and (4) not being inhibited by CsA.
摘要:
A process for the production of human serum albumin A (HSA) characterized by culturing host cells transformed with the plasmids containing a leader DNA sequence and a cDNA coding for mature HSA to produce and secrete mature HSA, and recovering the mature HSA. As the leader HSA sequence, a cDNA coding for the prepro sequence of HSA, a synthetic DNA coding for the prepro sequence of HSA, by the codons frequently used in a selected host, a DNA coding for a chimeric leader peptide, a DNA coding for MF.alpha.1 prepro sequence, or a DNA coding for PH05 signal peptide, is used.