54 results about "Genome structure" patented technology

The invention discloses a three-generation sequencing-based whole genome structure variation analysis method and system. The method comprises the steps of 1) performing sequence splitting; 2) performing sequence comparison; 3) performing genome structure variation preliminary detection; 4) combining and screening genome structure variation preliminary detection results; and 5) performing genome structure variation function annotation. The system comprises a sequence splitting module, a sequence comparison module, a genome structure variation preliminary detection module, a genome structure variation preliminary detection result combining and screening module and a genome structure variation function annotation module. According to the method and the system, by integrating existing three-generation genome structure variation detection technologies PBhoney and Sniffles, the accuracy and sensitiveness of genome structure variation detection under low coverage degree can be effectively improved, and the reliability of the detection results is ensured while the detection cost is reduced.

The invention discloses a DNA extraction method of Duck Enteritis Virus genome and the genome sequence. Firstly, the pyrolysis of chicken embryo fibroblast which is infected with DEV is processed by hypertonic buffer; then the nuclease is added for the digestion of cell DNA; and the virus genome DNA is obtained through phenol chloroform extracting method. The obtained sample is broken randomly into 2kb to 2.5kb fragments; the pUC19 vector is linked to transform host E. coli and construct genomic library. The positive clones in the library are randomly sequenced; the total sequence length has 6 times coverage rate for the virus genome. The sequence result is assembled and clustered to obtain the whole DEV genome sequence with the length of156512bp. The analysis shows that the genome structure is the same with that of the members of Varicella virus in Alpha- herpesus subfamily, which provides theoretical basis for the classification of DEV.

The invention relates to a method and a test kit for determining genome instability on the basis of a next-generation sequencing technology, belonging to the technical field of molecular detection. Inorder to overcome the defect that genome structure variation is not considered during detection of homologous recombination defects in the prior art, the invention provides the method and the test kit for determining genome instability on the basis of the next-generation sequencing technology. The method comprises the following steps: breaking a to-be-detected gene, then adding an A connector fora corresponding PCR reaction, carrying out hybridization capture through a designed probe, then amplifying a captured DNA library, sequencing the library, and carrying out evaluating through a software so as to determine the homologous recombination defect state. Compared with the prior art, the method provided by the invention can comprehensively evaluate the HRD state, is reliable in data results and is applicable to popularization.

The invention discloses isolation and identification of Yunnan tomato leaf curl viral genome and agrobacterium tumefaciens-mediated infective clone construction thereof. Total DNA of a genome of an infected tomato is extracted, virus total genomic DNA is cloned by using PCR (Polymerase Chain Reaction), and a total genomic sequence of a Yunnan tomato leaf curl virus is obtained through sequence measurement. 1.4 direct repeated genomes are obtained through methods of PCR and restriction enzyme digestion and are inserted into a plant expression carrier pBinPLUS with high replication capacity, a recombinant carrier is imported with agrobacterium tumefaciens strains EHA105 with strong infection capacity through an electroporation method, therefore, the agrobacterium tumefaciens-mediated infective clone has high-efficiency infection capacity to a host plant. The invention provides a matured method and system for researching interaction among the host plant, a virus infecting medium and a virus, field detection, genome structure and function research of the Yunnan tomato leaf curl virus.

The present disclosure relates to methods of annotating genomic structural variations and predicting fusion protein formation. The disclosure also provides a system and device for annotating genomic structural variations and predicting fusion protein formation, and a computer-readable media .

The invention provides a model-independent genome structure variation detection system and method, wherein a model-independent structure variation detection theory is used as a core, and structure variation detection without depending on any variation model is achieved through a variation signal extraction module, a frequent maximum subgraph mining module and a classification module. According tothe system, a frequent variation pattern mining module is used for capturing the characteristics of structural variation left on a genome, and judging a potential structural variation region only by mining abnormal points in a large amount of normal data; and according to different genome disturbance modes of different variation types, different arrangement sequences of variation signals are further caused, and the different variation types are classified on the basis of the different arrangement sequences in combination with a deep learning model with a memory function. According to the invention, the system does not depend on any variation model, so that the variation detection sensitivity and error rate are greatly reduced; and the system is suitable for detection of complex variation types, and an additional structural variation model does not need to be established.

The invention discloses a method for determining size of single-cell eukaryotic algae genome. The method is based on the characteristics of single-cell eukaryotic algae, optimizes an extraction and staining method of the nucleus, and obtains the more accurate flow cytometry analysis result, combined with a high-throughput second-generation illumina sequencing technology, the genome size of algae cells is comprehensively evaluated, and the characteristics of the genome can be clarified. The technical method optimizes the flow cytometry analysis of traditional plants, removes the interference ofalgal cytochrome and cell wall by using methanol, greatly improves the dyeing effect of PI, and improves the accuracy of flow cytometry analysis, and combined with a current leading high-flux sequencing technology, the genome structure characteristics of the to-be-tested species are comprehensively analyzed, which can provide a theoretical basis for a genetic structure research of subsequent species and an assembly strategy of whole genome sequencing.

The invention discloses enterobacter hormaechei bacteriophage YZU.P.A-5 and application thereof. The bacteriophage is identified to have unique genome structure characteristics, and belongs to a novelkind of bacteriophage; and the bacteriophage has been preserved in China Center for Type Culture Collection since June 15, 2020 under the preservation number of CCTCC NO: M 2020206. The bacteriophagedisclosed by the invention can efficiently crack enterobacter hormaechei so as to effectively inhibit enterobacter hormaechei in various matrices; and thus, the bacteriophage can be applied to preparation of a bacterial depressant for controlling enterobacter hormaechei pollution. The bacterial depressant prepared by the bacteriophage can effectively control growth of enterobacter hormaechei in culture media and food matrices, as well as effectively inhibit formation of enterobacter hormaechei mycoderm on surfaces of equipment, utensils and raw material solids; and moreover, the bacterial depressant is simple to prepare and convenient to use, as well as capable of reducing risks of enterobacter hormaechei propagation and food-borne diseases.

The invention belongs to the technical field of genome data analysis, and particularly relates to a generic genome construction method and a corresponding structural variation mining method thereof, structural variation obtained through genome comparison is put back to a linear genome, meanwhile, a structural variation site information file is added, and an efficient analysis generic genome which is linearized in the form and considers various structure variation forms is constructed. The generic genome not only can capture more brand-new structural variations which are not found by a reference genome, but also better displays the captured structural variations by combining a linearization method with a variation site information file, so that the constructed generic genome is easier to understand and analyze, and is more beneficial to subsequent application; according to the method and the process for analyzing the genome structure variation based on the generic genome and the second-generation sequencing data, a complete program code is compiled, and the efficient and accurate mining of the structure variation based on the relatively low-cost second-generation sequencing data is realized.

The invention discloses a whole blood genome DNA preservative as well as a preparation method and application thereof, belonging to the field of biotechnology. The whole blood genome DNA preservativecomprises the following components in parts by weight: 1 to 200 parts of an anticoagulant, 1 to 200 parts of a blood cell stabilizer, 1 to 200 parts of a reactive cell encapsulant, 0.1 to 200 parts ofa pH regulator, 0.1 to 200 parts of an ion concentration regulator and 500 to 1000 parts of RNase-free purified water. According to the whole blood genome DNA preservative, the integrity of a genomeDNA structure and the stability of physicochemical properties can be ensured for a long time at room temperature, and the loss or change of genome information is avoided; besides, the storage time andlong-distance transportation of the genome sample at room temperature can be prolonged. The genome DNA long-term normal-temperature preservation and extraction method can provide powerful guarantee for disease prevention, disease treatment, forensic criminal investigation and the like.

The invention discloses a genome DNA room-temperature preservation card and a manufacturing method and application thereof, and belongs to the technical field of biology. The genome DNA room-temperature preservation card comprises a medium with liquid absorption performance and a cell preservation liquid premixing agent. According to the genome DNA room-temperature preservation card, the integrity of a genome DNA structure and the stability of physicochemical properties can be ensured for a long time at room temperature, and the loss or change of genome information is avoided; and the storage time of the genome sample at room temperature can be prolonged, and long-distance transportation can be realized. The long-term normal-temperature preservation and extraction method of the genome DNA can provide powerful guarantee for mutation monitoring, disease prevention and disease treatment of somatic cells.

The invention discloses a soybean yellow leaf curl virus infectious cloning vector as well as a construction method and application thereof. The method specifically comprises the following steps: on the basis of obtaining the complete sequence of the genome of the soybean yellow leaf curl virus, constructing two forward repeated genomes of the soybean yellow leaf curl virus on a binary expression vector pBinPLUS by a gene recombination method; transforming the recombinant vector into an agrobacterium strain EHA105 through electric shock, so that the obtained virus vector can successfully infect plants such as soybeans and nicotiana benthamiana. The invention provides a mature system for researching the genome structure and function of the virus and the interaction between the virus and the host.

The invention relates to a salmonella detection method. The method includes the steps of: 1, preparing a probe molecule: according to the genome structure and conserved sequence of salmonella, selecting the invA gene of salmonella as the detection target fragment, according to the salmonella invA gene sequence disclosed by GenBank:EU348365, designing a probe molecule, which has a sequence of 5'-GCGAGTGGTAAATTATCGATGAAGT-3', with the 5' end being labeled with a reporter fluorophore; and 2, mixing a polystyrene nanosphere solution with the probe molecule prepared by step 1, then adding a to-be-detected sample, and performing fluorescence detection.

The invention discloses lactobacillus rhamnosus YZULr026 capable of efficiently degrading purine and an application of the lactobacillus rhamnosus YZULr026, the lactobacillus rhamnosus YZULr026 is preserved in China Center for Type Culture Collection (CCTCC), the preservation number is CCTCC NO: M 2020359, and the preservation date is July 27th, 2020. The lactobacillus rhamnosus YZULr026 disclosed by the invention has good acid resistance and bile salt resistance; has efficient purine degradation capacity, and the guanine degradation rate reaches up to 87.85% after the strain and guanine are incubated in a 37 DEG C pure water system for 2 hours; YZULr026 has a unique genome structure, the highest homology of a gene sequence Gene264 for encoding alpha galactosidase and a published sequence is 93.38%, and 28 base differences exist; the strain YZULr026 is used for preparing a microbial preparation, and has a wide application prospect when being used for reducing the purine content in food in vitro and vivo and preventing hyperuricemia.

The invention provides a feline calicivirus reverse genetic platform and a construction method thereof. A feline calicivirus DL19 strain genome is divided into two segments to be connected to a modified pBluescript II SK (+) vector, a feline calicivirus DL19 strain full-length infectious clone plasmid capable of serving as the reverse genetic platform is constructed, and a foundation is laid for subsequent virus rescue and genome structure research.

Belonging to the technical field of genetic engineering, the invention specifically relates to the cDNA full-length sequence of zebrafish tmem132e gene and application thereof. The invention provides the full-length sequence of zebrafish tmem132e gene, the DNA full length is 3222bp, the cDNA full-length sequence contains 3219bp open reading frame, and the nucleotide sequence is shown as SEQ ID NO.1. The invention also provides a zebrafish tmem132e gene encoded protein molecule. With the zebrafish tmem132e gene provided by the invention, purified protein or oligonucleotide with bioactivity can be artificially synthesized according to the gene sequence or can be obtained by genetically modified biosynthesis, thus being conducive to understanding the genomic structure of the zebrafish tmem132e gene and analyzing the gene expression and protein functions.

Provided herein are systems and methods for detecting genomic structural variants using non-applied gene editing sample preparation followed by long read sequencing.

The invention belongs to the technical field of gene engineering, and particularly relates to a rape mosaic virus infectious cloning vector as well as a construction method and application thereof. The technical problem to be solved by the invention is to provide a new choice for screening resistant varieties. According to the technical scheme, the infectious cloning vector for the rape mosaic virus is derived from a strain Agrobacterium tumefaciens YoMV-GD, and the preservation number of the infectious cloning vector is GDMCC No: 62229. A new strain of rape mosaic virus is screened, a rape mosaic virus infectious cloning vector is constructed, the vector is converted into agrobacterium, and then the rape mosaic virus can be inoculated by utilizing an agrobacterium injection method. And a foundation is laid for screening rape mosaic virus resistant materials and varieties and researching a rape mosaic virus genome structure, pathogenicity and interaction with hosts.