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45 results about "Intergenic region" patented technology

An Intergenic region (IGR) is a stretch of DNA sequences located between genes. Intergenic regions are a subset of noncoding DNA. Occasionally some intergenic DNA acts to control genes nearby, but most of it has no currently known function. It is one of the DNA sequences sometimes referred to as junk DNA, though it is only one phenomenon labeled such and in scientific studies today, the term is less used. Recently transcribed RNA from the DNA fragments in intergenic regions were known as "dark matter" or "dark matter transcripts".

Recombinant vector for eliminating activity of kanamycin drug resistance gene and building method of recombinant vector

The invention provides a recombinant vector for eliminating the activity of a kanamycin drug resistance gene, and aims at eliminating drug resistance germs in organisms and solving the problem of kanamycin drug resistance of the germs. The recombinant vector for eliminating the activity of the kanamycin drug resistance gene is characterized by comprising a pCas9 vector subjected to chloramphenicol resistance elimination and a gRNA nucleotide sequence KR58 or KR208 aiming at a kanamycin resistance gene kan; the concrete nucleotide sequence of the KR58 is GCCGCGAT TAAATTCCAACA, and the concrete nucleotide sequence of the KR208 is CAATGATG TTACAGATGAGA. A building method of the recombinant vector mainly comprises the steps of carrying intergenic region nucleic acids by a novel gene editing tool CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats)/Cas9 system; removing a chloramphenicol resistance gene on the recombinant vector; transforming the gene into vaccine vector bacteria such as attenuated salmonella typhimurium; performing co-culture on the recombinant bacteria and the kanamycin drug resistance gene so that the recombinant vector in the recombinant bacterium cell enters the kanamycin drug resistance bacteria in an engaging mode. The activity of the kanamycin resistance gene kan is effectively inhibited, so that the original drug resistance bacterium cannot grow on a kanamycin culture medium.
Owner:YANGZHOU UNIV

Tubercle bacillus drug tolerance detection reagent kit and tubercle bacillus drug tolerance detection method

PendingCN111172303AWide range of drug resistance detectionEasy constructionMicrobiological testing/measurementLibrary creationAntituberculosis drugTuberculosis bacillus
The invention provides a tubercle bacillus drug tolerance detection reagent kit and method. The tubercle bacillus drug tolerance detection reagent kit comprises a tubercle bacillus drug tolerance detection reagent, wherein the tubercle bacillus drug tolerance detection reagent comprises a sequencing primer in accordance with a tubercle bacillus drug tolerance gene; the tubercle bacillus drug tolerance gene comprises one or more genes of rpoB, katG, inhA-promoter, inhA-structural, furA, embB, ubiA, pncA, rpsA, gyrA, gyrB, eis, rpsL, rrs, tlyA, rplC and rrl; and further, the reagent kit also contains a tubercle bacillus nucleic acid detection reagent, and the tubercle bacillus nucleic acid detection reagent comprises a primer pair 1 in accordance with IS6110, a primer pair 2 in accordance with the IS6110 and a probe primer in accordance with the IS6110. Through the adoption of the tubercle bacillus drug tolerance detection reagent kit disclosed by the invention, tubercle bacillus nucleicacid in samples can be quickly detected, and positive samples can be further subjected to drug tolerance detection; and the tubercle bacillus drug tolerance detection reagent kit has good sensitivity, good specificity and good accuracy, and can perform mutation detection on 48 sites of 17 drug tolerance genes of common antituberculosis drugs and fragment deficiency detection of an intergenic region, so that the tuberculosis medication can be more accurately and comprehensively guided.
Owner:GUANGZHOU KINGMED DIAGNOSTICS GRP CO LTD +1

Quick identification method for paniculate swallowwort root medicinal material and counterfeit species thereof

The invention discloses a quick identification method for a paniculate swallowwort root medicinal material and counterfeit species thereof, namely rhizoma cynanchi stauntonii and blackend swallowwortroots. The quick identification method comprises the following steps: 1) extracting DNA of a to-be-detected sample; 2) taking the DNA of the to-be-detected sample as a template, and performing PCR amplification on a fragment of an ITS2 sequence containing ribosomal DNA; 3) splicing amplification products to obtain a complete ITS2 intergenic region; 4) analyzing interspecific variation sites of paniculate swallowwort root and counterfeit species thereof, namely rhizoma cynanchi stauntonii and blackend swallowwort roots, identifying as paniculate swallowwort roots if the 50-th site is a basic group C, and identifying as counterfeit species of paniculate swallowwort roots if the 50-th site is basic group deletion. The quick identification method is strong in applicability, is simple to operate, can realize quick and accurate identification for the paniculate swallowwort root medicinal material and counterfeit species thereof, and can identify a great number of samples within a short time.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI
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