Mycobacterium tuberculosis (MTB) H37Rv coding gene and application thereof

A technology of Mycobacterium tuberculosis and coding genes, which is applied in application, genetic engineering, plant genetic improvement, etc., can solve problems such as gene boundary errors, ribosome translocation, and termination site errors, and achieve the effect of easy comparison

Active Publication Date: 2019-11-05
BEIJING PROTEOME RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Although the three types of methods have their own advantages, they also have disadvantages, such as the long period of traditional isolation and culture and the low culturability of bacteria; the current molecular level detection is still poor in specificity, sensitivity and simplicity; Composition characteristic analysis is costly and complicated to operate
However, since MTB belongs to prokaryotes, due to the deficiencies of prokaryotic genome annotation technology itself, there may still be annotation errors in genome annotation (over-annotation, gene boundary errors, and ORF start and end site errors, alternative splicing, ribosome displacement, missing annotations), which has brought troubles to the in-depth and accurate analysis of biological mechanisms
To solve this problem, Proteogenomics has been used to correct the annotated genes of H37Rv, however, the high rate of false positives, conventional techniques are difficult to predict annotation genes, new gene verification, new gene function analysis and its application, etc. are the challenges faced by the field
[0005] In general, the traditional identification strategy of Mycobacterium tuberculosis complex (MTBC) has the defects of long period, cumbersome steps, low specificity and sensitivity, etc.

Method used

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  • Mycobacterium tuberculosis (MTB) H37Rv coding gene and application thereof
  • Mycobacterium tuberculosis (MTB) H37Rv coding gene and application thereof
  • Mycobacterium tuberculosis (MTB) H37Rv coding gene and application thereof

Examples

Experimental program
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Example Embodiment

[0033] Example 1: Searching for missing-annotated coding genes in the genome of H37Rv strain

[0034] 1.1 High-coverage proteomic verification of the H37Rv strain genome

[0035] Using high-coverage proteomics technology, the H37Rv strain was used to study the deep proteomic coverage. Based on the Tuberculosis (20160307) database, the pFind 3 engine was used to validate the annotated coding genes of its genome. In order to discover new protein coding regions, based on protein genomics technology, we used pAnno software to translate the H37Rv genome-wide (NC_000962.3) file published in NCBI on a six-reading frame database, and used this database to perform new peptides on mass spectrometry data. Identification of segments and new proteins. In order to reduce the false positive rate, we used three filtering methods to estimate the category FDR separately for the annotated peptides and the new peptides in the data filtering process, namely S-FDR, T-FDR I and T-FDRII.

[0036] Through da

Example Embodiment

[0051] Example 2: Establishment of a method for identifying MTBC complex

[0052] (1) Design primers:

[0053] Based on the CDS sequence of the Rv1796c(-|2034439-2034570|) gene shown in SEQ ID NO.1, PCR primers were designed using Oligo7.0, the primer sequences are as follows:

[0054] F: 5'-ATGGAGATTATCTCGACACCGGGGG-3' (SEQ ID NO. 4);

[0055] R: 5'-GCAAGATAGCCCCGATCGACAACCC-3' (SEQ ID NO.5)

[0056] The positional relationship between the above primers and the Rv1796c(-|2034439-2034570|) gene is shown below, and the corresponding positions of the primers are marked with a single underline.

[0057] ATGGAGATTATCTCGACACCGGGGG CGATCCCACTGAACGCGTCCGGCGGTGGTCCCAGCGCTGGCGATGGCGCACTCGGGTGCGGATTACGC GGGTTGTCGATCGGGGCTATCTTGC GGCCCCCGGAGTAG (SEQ ID NO.1)

[0058] (2) Extract the total DNA of the tested strains including M. tuberculosis H37Rv, 40 standard strains of Mycobacterium are deposited by the Chinese Medical Bacterial Culture Collection and Management Center (CMCC), and the remaining 16 s

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Abstract

The invention relates to a mycobacterium tuberculosis (MTB) H37Rv coding gene and application thereof, in particular to a novel annotation missing coding gene Rv1796c(-|2034439-2034570|). The MTB H37Rv coding gene can be used as a standard gene for molecular identification of a mycobacterium tuberculosis complex (MTBC) and used for molecular identification and clinical detection of the MTBC.

Description

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Claims

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Application Information

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Owner BEIJING PROTEOME RES CENT
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