Translating the differences between
gene sequences into a date for their divergence, the researchers conclude that the various forms of RRM2P4 last shared a common ancestor about two million years ago — around when H. erectus migrated from Africa into Asia.
«Decoding the genome's cryptic language: New tool to map RNA - DNA interactions could help researchers translate
gene sequences into functions.»
Not exact matches
The researches found that the transgene was inserted
into an active region of the genome, thereby disrupting the coding
sequence and ultimately the function of the plants own OsAux1
gene.
Blasting GM DNA
into a plant arbitrarily and out of a
sequence of
genes that has evolved over hundreds of millions of years, in a manner aimed to optimise the functioning of an organism, is risky and unpredictable, and bound to destabilise the biochemistry of the plant.
When looking
into mechanisms that might affect the levels of SMN protein in neurons, the researchers scanned a genomic database called the UCSC Genome Browser and identified two genetic
sequences that matched the opposite DNA strand of the SMN
gene.
A transgenic mouse — one with foreign
genes swapped
into its DNA — poses with its own
gene sequence at Harvard Medical School.
Then, using the CRISPR - Cas
gene - editing tool, they spliced
sequences corresponding to individual video pixels
into the genome.
The team found that humans are equipped with tiny differences in a particular regulator of
gene activity, dubbed HARE5, that when introduced
into a mouse embryo, led to a 12 % bigger brain than in the embryos treated with the HARE5
sequence from chimpanzees.
The Tetrahymena intervening
sequence (IVS) has been inserted
into the
gene for the alpha - donor fragment of beta - galactosidase in a recombinant plasmid.
When Blakely's team spliced the DNA
sequence that encodes the relevant fly amino acid
into the mouse serotonin transporter
gene, the mice now made a transporter that was 80 times less sensitive to cocaine, while allowing the transporter to function completely normally.
To build a family tree for the orchids, the scientists
sequenced genes in the green structures, called chloroplasts, in which plants transform solar energy
into sugar.
Gene sequencing is also allowing Jackson and Seed to track down the sources of microbes, both benign and malignant, that find their way
into the newborns in the study.
«By inserting the new
sequence into the DNA, perhaps they are altering the
gene in some other way,» he says.
You type the DNA
sequence of your
gene into a database, and then you sit and you wait.
They thrive in bodily fluids and tend to get copied several times
into host
gene sequences, which can wreak genetic havoc and sometimes lead to cancer.
But critics warn that genetic engineering has a dark side too, and could lead to designer babies or the release of dangerous DNA
sequences into the
gene pool, with dire environmental consequences.
Berninger and others have previously shown that Sox2, Ascl1, and other transcription factors — proteins that bind to specific DNA
sequences to control the activity of
genes — can induce the nonneuronal «support cells» known as glia to turn
into neurons.
The
gene - editing success appears to be largely due to one procedural change: The researchers introduced the editing system — the enzyme Cas9 and a guide RNA
sequence that helps the editing machinery find its target — at the same time they injected the mutation - laden sperm
into a healthy egg in the lab.
They enable molecular biologists and geneticists to selectively chop DNA
into pieces, which can then be assembled
into new versions of the
gene, inserted
into the genomes of other organisms, or
sequenced as part of an effort to map an organism's genetic material.
For most known
genes this «messenger» or mRNA is then shuttled off to a ribosome of a cell where its translation
into a protein
sequence occurs.
To deliver the healthy
gene, the team inserted it
into an engineered virus called adeno - associated virus 1, or AAV1, together with a promoter — a genetic
sequence that turns the
gene on only in certain sensory cells of the inner ear known as hair cells.
Fortunately only about 3 percent of that is actual genetic information that gets translated
into proteins; the rest is regulatory
sequences, old, nonfunctioning
genes, or outright nonsense.
As when he worked on the human genome, Venter is relying on a radical technique called shotgun
sequencing: He chops up vast amounts of DNA
into tiny pieces and then uses sophisticated computer analyzers to piece them back together
into intelligible
genes and chromosomes.
By characterising the DNA
sequence of these individuals, the project gained insight
into the contribution of rare variants to a broad range of disease scenarios, and discovered new genetic variants and
genes underpinning disease risk.
The team looked at the DNA
sequence of mitochondrial cytochrome b
gene to gain more precise genetic information and gain insight
into the history of the animals» migration routes.
Using next - generation RNA
sequencing and other advanced technologies, the researchers identified a previously unknown
gene involved in betalain synthesis and revealed which biochemical reactions plants use to convert the amino acid tyrosine
into betalains.
After the fly is defrosted in a sterile environment, the various parts are separated, crushed and then put
into a
gene sequencing machine.
When they
sequenced ribosomal
genes to identify the bacteria within each sample, the researchers found that the samples fell again
into two groups.
Researchers from various institutions are increasingly bringing troves of DNA
sequences into huge
gene banks in hopes of tackling diseases.
Previous efforts to
sequence preserved mammoth DNA were error - prone or yielded insights
into only a limited number of
genes.
Sequencing the genome and assessing
gene activity in various tissues in the tsetse fly led to new insights
into its biology and the control of parasitic diseases transmitted by this insect.
To do this, they incorporated the
gene sequence of each receptor
into cultured cells and then probed the cells to determine if they were activated by one or more of 25 different bitter - tasting chemicals.
They took one person's DNA (the molecule that contains all
genes), chopped it up
into little pieces and determined the
sequence of base pairs in each piece.
In flu surveillance, researchers look primarily for the
genes encoding the virus's surface proteins, hemagglutinin and neuraminidase; if they
sequence the so - called internal
genes as well, they might detect new
genes slipping
into human virus strains in the run - up to a pandemic, they say.
Furthermore, besides offering valuable insight
into the function of this novel RNA type, the researchers also believe that the findings will open new avenues for novel treatments in which cell - specific enhancer
sequences can be targeted to alter
gene expression.
During this crucial step, messenger RNA (mRNA), which is a RNA copy of a
gene's recipe for a protein, is translated by the cell's ribosome
into the
sequence of amino acids that will make up a newly synthesized protein.
Using «homologous recombination,» CRISPR can also be used to insert new DNA
sequences or even whole
genes into the genome in a precise way.
When the promoter upstream of the GFP
gene was activated, the RNA polymerase ran headfirst
into the termination
sequence, stopped reading the DNA, and didn't produce the fluorescent protein.
siRNAs are designed by taking short
sequences of the
gene to be targeted and converting them
into double - stranded RNA.
Working with French composer Richard Krüll, the pair turned the complete nucleotide
sequences of several microbe
genes into compositions based on DNA bases: A (adenosine), C (cytosine), G (guanine), and Thymine (which they have translated to «Re,» or D).
Is it appropriate to stop at observable traits, such as leaf size, or to dig
into individual
gene sequences?
He says HGS was getting «diminishing returns» from its investment in TIGR since Venter had steered his outfit
into sequencing organisms of little medical importance, and
into human genome
sequencing, also of limited value for a company like HGS that is interested in
genes as drug targets (not untranslated DNA that makes up most of the genome).
By isolating strands of complementary DNA (cDNA) that fit together with mRNA, researchers can figure out what
sequence was just translated
into mRNA — that is, they can get a read on an expressed
gene.
Because some mutations are present in the DNA but the
gene is not made
into RNA and protein, the researchers used RNA
sequencing to identify mutations that caused the production of a mutated RNA, which is then normally translated
into a protein.
After that, the researchers back - translate the amino acid
sequence into a genetic
sequence, buy the DNA base pairs to build the
gene spelled out by that
sequence, and then turn the
gene loose in bacteria or yeast that have been programmed to manufacture the protein.
The ZFNs targeting either the cxcr4 or ccr5
genes were linked via a 2A peptide
sequence and cloned
into the pAdEasy - 1 / F35 vector under control of the CMV TetO promoter, and the Ad5 / F35 virus for each construct was generated using TREx 293T cells as described [33].
After the sections of DNA
sequence have been assembled
into a complete genome
sequence we need to identify where the
genes and key features are, but how do we do this?
Reykjavik, ICELAND, 12 October 2011 — deCODE genetics today announced that it has entered
into a research collaboration with Pfizer Inc., the objective of which is to discover
sequence variants associated with specific clinical phenotypes related to Systemic Lupus Erythematosis by utilizing deCODE's expertise in
gene discovery.
When zinc hooks up with a
gene - controlling protein, it forms «zinc finger proteins» - so called because they can poke
into the tight groove between the two strands of DNA and touch the
sequence they're made for.
April 2012 - New research: Illuminating embryonic stem cells Collaboration between two EU funded projects «Heroic» and «EuroSyStem», has provided new insights
into embryonic stem cells The teams used next generation
sequencing technology to examine two key properties of the cells that influence their identity and behaviour:
gene expression and
gene regulation.