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Genomics02:02

Genomics

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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
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The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...
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Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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An Integrated Approach for Microprotein Identification and Sequence Analysis
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The UCSC Genome Browser database: 2024 update.

Brian J Raney1, Galt P Barber1, Anna Benet-Pagès2,3

  • 1Genomics Institute, University of California Santa Cruz, Santa Cruz, CA 95064, USA.

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This summary is machine-generated.

The UCSC Genome Browser enhances genomic data access with new human pangenome and viral genome information. These updates expand its utility for researchers worldwide.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Computational Biology

Background:

  • The UCSC Genome Browser is a widely used web tool for genomic visualization and analysis.
  • It provides access to annotation data for numerous genome assemblies.

Purpose of the Study:

  • To report recent updates and new features of the UCSC Genome Browser.
  • To highlight expanded data offerings and improved genomic representation.

Main Methods:

  • Integration of new data from the Human Pangenome Reference Consortium.
  • Inclusion of viral genomes, including SARS-CoV-2.
  • Expansion of the GenArk genome system with 1,200 new genomes.
  • Addition of nine new user-contributed track hubs.
  • Release of 29 new human genome tracks and 11 new mouse genome tracks.

Main Results:

  • Increased diversity in genomic representation through new genome additions.
  • Enhanced support for user-generated data via public track hubs.
  • Broader and deeper genomic knowledge shared with a global user base.
  • Expanded data on human pangenomes and viral genomes.

Conclusions:

  • The UCSC Genome Browser continues to evolve as a comprehensive resource for genomic research.
  • Recent updates significantly enhance the breadth and depth of available genomic data.
  • These improvements support a growing global community of users in genomic analysis.