What is Exon? A coding sequence within a fragmented gene, an exon (expressed region) constitutes a vital segment of a eukaryotic gene. It remains conserved post-splicing and serves as the basis for protein expression during protein biosynthesis. These nucleotide sequences are present in both the initial transcription product and the mature RNA molecule. Genome encompasses […]
The study of population evolution relies on advanced genomic techniques like whole-genome resequencing or other sequencing methods. These technologies enable the acquisition of genomic data from diverse subpopulations within a species. By extracting extensive variant information such as single nucleotide polymorphisms (SNP), insertions/deletions (InDel), structural variations (SV), and copy number variations (CNV), researchers delve into […]
What is Agrobacterium-Mediated Plant Transformation? Agrobacterium, a soil-dwelling bacterium, can chemotactically infect a wide array of dicotyledonous plants. Exploiting wounded areas of the plant, Agrobacterium induces the formation of crown gall tumors or hairy roots. Within Agrobacterium‘s Ti and Ri plasmids resides a crucial fragment of transfer DNA known as T-DNA. This T-DNA has the remarkable capability […]
Overview of HLA Human leukocyte antigen (HLA) molecules are essential components of the immune system, playing a crucial role in activating antitumor immune responses through their interactions with T cell receptors (TCRs). HLA molecules are a class of glycoproteins composed of an alpha-heavy chain and a beta-light chain that are non-covalently bound. The structure of […]
Ten years ago, clinicians at several hospitals across the United States began sequencing the genomes of seemingly healthy infants in an attempt to understand how this technology would be able to detect recessive genetic disorders that would not be detected by conventional newborn blood tests. Recently, a team of researchers from BabySeq, the world’s first […]
The result of the Human Genome Project is a recognized "standard" for scientists – the reference genome. Like a coordinate system, researchers can better understand the structure, function, and variation of the human genome against the reference genome. The Human Genome Project began in 1990, the working draft was published in 2001, and the final […]
Since the first human genome was published in 2000, many reference genomes have been assembled successively in various species. However, the highly repetitive sequences (telomeric, mitotic, ribosomal DNA) clustered in the genome have resulted in many missing fragments in the assembled genomes. Fortunately, thanks to improvements in sequencing technologies and computational algorithms, a new era […]
Introduction As one of the organelles that contain their own genome, chloroplasts (cp) are plastids with double membranes and vesicle-like structures. These tiny organelles convert solar energy, synthesize organic matters, and feed almost the entire life on Earth while providing for their own needs. However, it seems that chloroplasts are not satisfied with this, as […]
Mitochondrial diseases (MitD) are an important clinical or medical challenge. Research has shown that genome sequencing can help to enhance the understanding of the genetic causes of MitD and to accelerate the development of functional research, clinical tests and therapeutic tools. What is Mitochondrial Disease? Mitochondria are membrane-bound organelles found in most eukaryotic cells that […]
Introduction to Single Cell Genomics James Eberwine et al. and Iscove and colleagues were the first to sequence an entire transcriptome at the level of a single cell, using linear amplification by in vitro transcription and exponential amplification by PCR, respectively, to expand the complementary DNAs (cDNAs) of a single cell. These methods were first […]
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