Demethylation is the chemical process resulting in the removal a of methyl group ( CH < sub > 3 </ sub >) from a molecule.

Illustrative of the many functions of the B < sub > 12 </ sub >- dependent enzymes, the MTR enzyme catalyzes the transfer of a methyl group from a nitrogen on N5-methyl-tetrahydrofolate to the sulfur of homocysteine to produce methionine.

The transfer of methyl groups from S-adenosyl methionine to histones is catalyzed by enzymes known as histone methyltransferases.

Vitamin B < sub > 12 </ sub > catalyzes the transfer of methyl (- CH < sub > 3 </ sub >) groups between two molecules, which involves the breaking of C-C bonds, a process that is energetically expensive in organic reactions.

catalyze the transfer of a methyl group to DNA.

Histone methyltransferases ( HMT ) are histone-modifying enzymes, ( including histone-lysine N-methyltransferase and histone-arginine N-methyltransferase ), that catalyze the transfer of one, two, or three methyl groups to lysine and arginine residues of histone proteins.

Methylation is the most common type of alkylation, being associated with the transfer of a methyl group.

In biochemistry, a transferase is an enzyme that catalyzes the transfer of a functional group ( e. g., a methyl or phosphate group ) from one molecule ( called the donor ) to another ( called the acceptor ).

" For example, a DNA methyltransferase is a transferase that catalyzes the transfer of a methyl group to a DNA acceptor.

* EC 2. 5 includes enzymes that transfer alkyl or aryl groups, other than methyl groups

* EC 2 Transferases: transfer a functional group ( e. g. a methyl or phosphate group )

Transferases transfer a functional group ( e. g. a methyl or phosphate group ).

The principal Arabidopsis DNA methyltransferase enzymes, which transfer and covalently attach methyl groups onto DNA, are DRM2, MET1, and CMT3.

Enzymes called transaminases can easily transfer the amino group from one amino acid ( making it an α-keto acid ) to another α-keto acid ( making it an amino acid ).

* The citric acid cycle begins with the transfer of a two-carbon acetyl group from acetyl-CoA to the four-carbon acceptor compound ( oxaloacetate ) to form a six-carbon compound ( citrate ).

CheA in turn transfers phosphoryl groups to conserved aspartate residues in the response regulators CheB and CheY CheA is a histidine kinase and it does not actively transfer the phosphoryl group.

It is mainly designed for group communication in discussion forums, called channels, but also allows one-to-one communication via private message as well as chat and data transfer, including file sharing.

Group I and group II introns are found in genes encoding proteins ( messenger RNA ), transfer RNA and ribosomal RNA in a very wide range of living organisms., Following transcription into RNA, group I and group II introns also make extensive internal interactions that allow them to fold into a specific, complex three-dimensional architecture.

According to Robin Blackburn, " The decline of CND by late 1961, however, deprived the New Left of much of its momentum as a movement, and uncertainties and divisions within the Board of the journal led to the transfer of the Review to a younger and less experienced group in 1962.

In mitochondria, electrons are transferred within the intermembrane space by the water-soluble electron transfer protein cytochrome c. This carries only electrons, and these are transferred by the reduction and oxidation of an iron atom that the protein holds within a heme group in its structure.

Risk retention pools are technically retaining the risk for the group, but spreading it over the whole group involves transfer among individual members of the group.

Groups of orangutans and chimpanzees, in particular, may display large numbers of behavioral traditions, and in chimpanzees, transfer of traditional behavior from one group to another ( not just within a group ) has been observed.

The group delay ( i. e., the frequency-dependent amount of delay introduced to the envelope of the sinusoid by the transfer function ) is found by computing the derivative of the phase shift with respect to angular frequency,

Believing that Wilson and his advisers would not voluntarily transfer power to the vice president, a group of Congressional leaders initiated Marshall's requested joint resolution.

It mandated that key articles, including those on limitation of seabed production and mandatory technology transfer, would not be applied, that the United States, if it became a member, would be guaranteed a seat on the Council of the International Seabed Authority, and finally, that voting would be done in groups, with each group able to block decisions on substantive matters.

Because group delay is, as defined in ( 1 ), it therefore follows that a constant group delay can be achieved if the transfer function of the device or medium has a linear phase response ( i. e., where the group delay is a constant ).

In telecommunication, a telecommunications service is a service provided by a telecommunications provider, or a specified set of user-information transfer capabilities provided to a group of users by a telecommunications system.

Population transfer is the movement of a large group of people from one region to another by state policy or international authority, most frequently on the basis of ethnicity or religion.

A tyrosine kinase is an enzyme that can transfer a phosphate group from ATP to a protein in a cell.

The levels found in the non-Bt corn decreases with distance from the Bt-corn fields, indicating the pollen is wind-borne rather than another method of transfer.

Thus, one nucleus offers a more tightly bound position to an electron than does another nucleus, with the result that one atom may transfer an electron to the other.

Redox reactions can be understood in terms of transfer of electrons from one involved species ( reducing agent ) to another ( oxidizing agent ).

Acid-base reactions involve transfer of protons from one molecule ( acid ) to another ( base ).

They decided to transfer the Cuban U-2 reconnaissance missions to the Air Force ; if another U-2 was shot down, they thought a cover story involving Air Force flights would be easier to explain than CIA flights.

When scientists transfer a gene from one cell into another cell in order to express the new genetic material as a protein in the recipient cell, the cDNA will be added to the recipient ( rather than the entire gene ), because the DNA for an entire gene may include DNA that does not code for the protein or that interrupts the coding sequence of the protein ( e. g., introns ).

:: * chain transfer ( the case in which one active particle enters an elementary reaction with the inactive particle which as a result becomes another active particle along with forming of another inactive particle from the initial active one );

Tracing paper is used to experiment over a half-finished drawing, and to transfer a design from one sheet to another.

A system can transfer energy to another system by simply transferring matter to it ( since matter is equivalent to energy, in accordance with its mass ).

Similarly, a system may transfer energy to another by physically impacting it, but in that case the energy of motion in an object, called kinetic energy, results in forces acting over distances ( new energy ) to appear in another object that is struck.

In all such energy transformation processes, the total energy remains the same, and a transfer of energy from one system to another, results in a loss to compensate for any gain.

T is used to transfer another file into the one being edited, with this syntax: to insert attpath to file.

On January 16, 1969, the Soviet Union achieved the first EVA crew transfer from one spacecraft to another when Aleksei Yeliseyev and Yevgeny Khrunov transferred from Soyuz 5 to Soyuz 4, which were docked together.

Another version is the Collector's Edition, a two-disc set featuring a remastered transfer with a 5. 1 audio track, two commentaries ( one by John Carpenter and Kurt Russell, another by producer Debra Hill and Joe Alves ), a making-of featurette, the first issue of a comic book series titled John Carpenter's Snake Plissken Chronicles, and a ten-minute deleted opening sequence.

The SE may transfer its registered office within the Community without dissolving the company in one Member State in order to form a new one in another Member State, however, such a transfer is subject to the provisions of 8 which require, inter alia, the drawing up of a transfer proposal, a report justifying the legal and economic aspects of the transfer and the issuing, by the competent authority in the member state in which the SE is registered, of a certificate attesting to the completion of the required acts and formalities.

Thorndike ’ s research with Robert Woodworth on the theory of transfer found that learning one subject will only influence your ability to learn another subject if the subjects are similar.

When customers needed to transfer data from one system to another, it was necessary to write translators from one format to other.

This made it possible to transfer floating-point numbers from one computer to another.

Apprentices ( Ph. D .) student must work for years at very low wages assisting their Masters ( faculty ) and must produce an approved master work ( Dissertation ) before they can go work for others ( tenure track appointments virtually require a Ph. D., and any Ph. D. candidate who leaves their master prior to getting their Ph. D .- trying to transfer to another Ph. D. program-will have to start all over again, or give up ever becoming a guild member with the result of permanent impovrishment in the insecure life of an adjunct faculty member ).