摘要:
3'-(2')-Amino- or thiol-modified, fluorescent dye-coupled nucleosides, nucleotides and oligonucleotides, and a process for the preparation and the use thereof The OH group located in the 3' and/or 2' position of a nucleoside, nucleotide or oligonucleotide is derivatized to an amino or thiol group and subsequently a fluorescent dye is coupled thereto. The resulting 3'- and/or 2'-amino- and thiol-modified nucleosides, nucleotides and oligonucleotides can then be used for the synthesis of complementary strands in the presence of a template strand or of oligonucleotides and for the detection of genetic material. They have the advantage that the fluorescent label need no longer be attached to the 5' end of the oligonucleotide or to the nucleobase, and thus need not be introduced during the chemical synthesis as in labeling techniques hitherto known, while the known and conventional methods have the disadvantage that only a few polymerases can be employed for the synthesis, the acceptance of the triphosphates by the polymerases diminishes and, moreover, a large substrate excess is necessary.
摘要:
3'-(2')-Amino- or thiol-modified, fluorescent dye-coupled nucleosides, nucleotides and oligonucleotides, and a process for the preparation and the use thereof.The OH group located in the 3' and/or 2' position of a nucleoside, nucleotide or oligonucleotide is derivatized to an amino or thiol group and subsequently a fluorescent dye is coupled thereto. The resulting 3'- and/or 2'-amino- and thiol-modified nucleosides, nucleotides and oligonucleotides can then be used for the synthesis of complementary strands in the presence of a template strand or of oligonucleotides and for the detection of genetic material. They have the advantage that the fluorescent label need no longer be attached to the 5' end of the oligonucleotide or to the nucleobase, and thus need not be introduced during the chemical synthesis as in labeling techniques hitherto known, while the known and conventional methods have the disadvantage that only a few polymerases can be employed for the synthesis, the acceptance of the triphosphates by the polymerases diminishes and, moreover, a large substrate excess is necessary.
摘要:
Secretin, which cannot be prepared directly by genetic engineering because of its carboxylic acid carboxyl-terminus, can be obtained by preparing secretylglycine by genetic engineering and then obtaining secretin therefrom by enzymatic conversion of the terminal glycine radical. The gene for the secretylglycine is synthesized chemically from smaller single-stranded units which are linked enzymatically to give the complete gene, incorporated into a suitable vector and amplified therein, after which the peptide is isolated directly or as a fusion protein and, after cyanogen bromide cleavage, is converted enzymatically into secretin.
摘要:
The invention concerns a method for detecting interactions between probe molecules and target molecules, whereby marking target molecules is not required. The invention further concerns probe arrays and kits suited to such a method, as well as a method for production, quality control and standardization of probe arrays.
摘要:
The OH group located in the 3' and/or 2' position of a nucleoside, nucleotide or oligonucleotide is derivatized to an amino or thiol group and subsequently a fluorescent dye is coupled thereto. The resulting 3'- and/or 2'-amino- and thiol-modified nucleosides, nucleotides and oligonucleotides can then be used for the synthesis of complementary strands in the presence of a template strand or of oligonucleotides and for the detection of genetic material. They have the advantage that the fluorescent label need no longer be attached to the 5' end of the oligonucleotide or to the nucleobase, and thus need not be introduced during the chemical synthesis as in labeling techniques hitherto known, while the known and conventional methods have the disadvantage that only a few polymerases can be employed for the synthesis, the acceptance of the triphosphates by the polymerases diminishes and, moreover, a large substrate excess is necessary.
摘要:
Polypeptides having a carboxamide carboxyl terminal end and a methionine residue, which is optionally bonded to a bacterial protein, on the amino end can be prepared by synthesis by genetic engineering methods of the corresponding polypeptide having at the C terminal end a glycine residue, and conversion of the latter enzymatically into the amino group of the desired carboxamide group. Peptides which have the aminoacid sequence of growth hormone releasing factor, part sequences thereof, or modifications of these peptides, are readily accessible by this means. The synthesis by genetic engineering methods is advantageously carried out via two gene fragments which are synthesized chemically from smaller, single-stranded structural units. The two gene fragments are then linked enzymatically to give the complete gene, which is incorporated into a suitable vector, amplified there, and the peptide is isolated directly or as a fused protein, and is converted enzymatically into the desired amide.
摘要:
Compounds of the formula ##STR1## are phosphorylating reagents which react with acylatable hydrogen atoms with elimination of the amine HNR.sup.3 R.sup.4. The resulting compounds are oxidized to give the corresponding phosphate, thiophosphate or selenophosphate derivatives, and the radicals R.sup.1 and R.sup.2 are then split off by means of bases. The chemical nature of the radicals R.sup.1, R.sup.2, R.sup.3 and R.sup.4 accordingly depends on the requirements for these cleavage reactions.
摘要翻译:式“IMAGE”的化合物是与可酰化氢原子反应的磷酸化试剂,同时除去胺HNR 3 R 4。 所得化合物被氧化,得到相应的磷酸酯,硫代磷酸酯或硒代磷酸酯衍生物,然后基团R 1和R 2通过碱分离。 因此R1,R2,R3和R4基团的化学性质取决于这些裂解反应的要求。
摘要:
Partial sequences of human-.gamma.-interferon, comprising aminoacid sequences 5 to 127, 1 to 127 and 5 to 146, having biological activity. These partial sequences can be obtained by a genetic engineering process, for which purpose the appropriate DNA sequences are chemically synthesized. The DNA sequences are incorporated in hybrid plasmids, and the latter are introduced into host organisms and their expression is induced there. The biologically active polypeptides are suitable, as is human-.gamma.-interferon, for medicaments.
摘要:
Steroid-21-phosphoric acids and pharmaceutically usable salts thereof of the formula III ##STR1## (in which U=H or CH.sub.3, V=H, OH, O or Hal; W=H or OH and Y=H or F) are obtained in a very pure state by reacting I ##STR2## (in which X=OH or Hal) with an organic phosphoric acid ester of the formula IVa or IVb ##STR3## (in which Z=optionally substituted alkyl and R=alkyl). The compounds II ##STR4## obtained thereby is saponified to give III and the latter, if appropriate, is neutralized to give the salt. Compounds II are new.
摘要:
Enzymatic RNA molecules have been designed that cleave mutant N-ras mRNA, preferably at a NUX cleavage site (N=any base, X=A, C or U). Preferred ribozymes have nucleotide sequences 5'-CCAACACCUGAUGAGCGUUAGCGAAACCUGCU-3' or 5'-UCCCAACCUGAUGAGCGUUAGCGAAACACCUG-3' (SEQ ID NOS:1 and 2), and derivatives thereof. The present invention also provides pharmaceuticals containing such molecules and the use of such molecules for the preparation of pharmaceuticals for the treatment of diseases involving abnormal cell growth and/or differentiation.
摘要翻译:已经设计了酶切RNA分子,其切割突变体N-ras mRNA,优选在NUX切割位点(N =任何碱基,X = A,C或U)。 优选的核酶具有5'-CCAACACCUGAUGAGCGUUAGCGAAACCUGCU-3'或5'-UCCCAACCUGAUGAGCGUUAGCGAAACACCUG-3'(SEQ ID NO:1和2)的核苷酸序列及其衍生物。 本发明还提供含有这种分子的药物以及这种分子用于制备用于治疗涉及异常细胞生长和/或分化的疾病的药物的用途。