Sentences with word «uracil»

They then treated the nuclei with a chemical that converts cytosines without methyl groups to the RNA base uracil.
The radiation and harsh temperatures broke down pyrimidine in the ice and formed new compounds related to life, such as uracil and cytosine.
The first three are the same as those found in DNA, but in RNA thymine is replaced by uracil as the base complementary to adenine.
The mutant deficient of uracil — a basic compound of nucleic acid — appeared to have lost the ability to maintain symbiosis with the model organism sea anemone.
By contrast, soil samples from the meteorite's fall site contained uracil with more carbon 12.
RNA molecules use uracil (U) instead of thymidine.
Adenine, which only binds with Thymine (or Uracil if we're talking RNA).
Frozen in ice under ultraviolet radiation, high vacuum and low temperature, the pyrimidine turned into uracil, cytosine and thymine, major components of earthly DNA and RNA.
As a next step, the team aims to introduce genetic mutations that are capable of reversing uracil deficiency in the mutant dinoflagellate, which may provide clues for identifying algal genes responsible for symbiosis.
Also, RNA nucleotides contain ribose sugars while DNA contains deoxyribose and RNA uses predominantly uracil instead of thymine present in DNA.
Currently, making the drug requires a multiple - step process that involves fluorination, chlorination, amination and hydrolysis from uracil.
In most cells, the three - base sequence uracil - adenine - guanine is a stop signal that shuts down protein production.
These so - called APOBEC proteins seek out certain combinations of the letters that make up DNA (called bases), and, in DNA of viral origin, chemically convert the base cytosine into the base uracil — a change in the genetic alphabet from C to U that can disrupt a gene.
By binding to a stem structure formed by uracil and adenine nucleotides in the nanos RNA, Glo prevents the production of Nanos protein at the front of the embryo, a step that enables the fly's head to form properly.
The five nucleotides — adenine, thymine, cytosine, guanine and uracil — arranged into DNA and / or RNA The twenty amino acids — that form all proteins, including enzymes and the other 100,000 or so proteins in a complex organism's body.
The SureSeq mix increases the success and accuracy of hybridization - based NGS for FFPE samples by repairing damage such as nicks and gaps, oxidized bases, blocked 3» ends, and deamination of cytosine to uracil.
The gold - standard method for detecting DNA methylation, which Clark's group developed more than 15 years ago, is bisulphite sequencing, in which unmethylated versions of the base cytosine are chemically converted into another base, uracil.
The researchers found that these basic amino acids mediate binding to uracil - adenine (U-A) stem structures like the one found in nanos RNA.
These RNA - binding proteins include sequences of amino acids that bind to one of the ribonucleotide bases or «letters» that make up RNA sequences — adenine (A), thymine (T), uracil (U), and guanine (G).
To find out, they created stretches of RNA made up of two nucleotides: adenine and uracil, or «a» and «u.» But how best to order them?
The guanine - uracil (G.U) base pair that helps to define the 5» - splice site of group I introns is phylogenetically highly conserved.
Chemical analysis showed that the meteorite contains xanthine and uracil, substances called nucleobases that are necessary for RNA and DNA to form their base pairs as part of their replication process.
However, scientists had not yet examined how long RNA's four units, or nucleobases — adenine (A), cytosine (C), guanine (G) and uracil (U)-- survive over a wide range of temperatures.
RNA is a polymer with a ribose and phosphate backbone and four different bases: adenine, guanine, cytosine, and uracil.
In DNA, however, uracil is readily produced by chemical degradation of cytosine, so having thymine as the normal base makes detection and repair of such incipient mutations more efficient.
Martins found the answer by extracting two molecules from the meteorite: uracil, a nucleobase found in RNA, and xanthine, an intermediate in the synthesis of DNA and RNA.
Thus, uracil is appropriate for RNA, where quantity is important but lifespan is not, whereas thymine is appropriate for DNA where maintaining sequence with high fidelity is more critical.
Uracil is energetically less expensive to produce than thymine, which may account for its use in RNA.
Attached to each sugar is one of four bases — adenine (A), uracil (U), cytosine (C), or guanine (G).
Barbituric acid and melamine may have been place holders that dropped out and allowed adenine and uracil to come together with ribose.»
Nicholas Hud holds up Uracil, on the right, a nucleobase of RNA.
Figuring out how adenine and uracil (nucleobases found in RNA today) combined with the sugar ribose (corresponding to the «R» in RNA) could answer one of the great questions of chemical evolution.
Those four bases are adenine (A) which pairs with thymine (T)(or uracil (U) in RNA), and guanine (G) pairs with cytosine (C).
Such statements do not begin to address the conditions and processes that led to the assembly of the nucleotides — adenine, guanine, cytosine, thymine and uracil — nor do the statements indicate that the materials necessary to form the nucleotides might be present in hydrothermal vents.
In others, they changed pyrimidine RNA nucleotides, with cytidine or uracil bases, into pyrimidine DNA nucleotides with cytidine or thymidine bases.
RNA, too is composed of four chemical bases: adenine, guanine, cytosine, and — in a slight departure from DNA — uracil.
These RNA - binding proteins include sequences of amino acids that bind to one of the ribonucleotide bases or «letters» that make up RNA sequences — adenine (A), cysteine (C), uracil (U), and guanine (G).
The system also allowed him to determine that a sequence of three uracil bases in a row coded for the amino acid phenylalanine.
For example, if a codon on mRNA has the sequence... - uracil - uracil - uracil -... (UUU) which codes for the amino acid phenylalanine, then the anti-codon on the phenylalanine tRNA will be adenine - adenine - adenine (AAA); remember that A binds with U in RNA.
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