transamination


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Related to transamination: deamination, Oxidative deamination

transamination

 [trans″am-ĭ-na´shun]
the reversible exchange of amino groups between different amino acids.

trans·am·i·na·tion

(trans'am-i-nā'shŭn),
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter; in certain cases the reaction may be between an amino acid and an aldehyde (for example, glutamate with glutamate semialdehyde via ornithine transaminase).

transamination

/trans·am·i·na·tion/ (-am″ĭ-na´shun) the reversible exchange of amino groups between different amino acids.

transamination

(trăns-ăm′ə-nā′shən, trănz-)
n.
1. Transfer of an amino group from one chemical compound to another.
2. Transposition of an amino group within a chemical compound.

transamination1

[-am′inā′shən]
the reaction between an amino acid and an alpha-keto acid in which the enzyme transaminase induces transfer of the amino group to the alpha-ketoacid.

transamination

Chemistry
A biochemical reaction in which an amino group is transferred from an amino acid—which becomes an alpha-keto acid upon losing the amino group—to an alpha-keto acid—which becomes an amino acid once it gains the transferred amino group.
 
Medspeak
A near-extinct term for:
(1) Resuscitation of a stillborn infant;
(2) Mouth-to-mouth resuscitation.

trans·am·i·na·tion

(tranz'am-i-nā'shŭn)
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter.

transamination

The reaction in which the amino group of an amino acid is transferred to a ketoacid, converting it into an amino acid.
Transaminationclick for a larger image
Fig. 300 Transamination . The transfer of an amino group to form a different amino acid.

transamination

the process by which amino groups are transferred from one AMINO ACID to form another, using a keto acid as an intermediary. The mechanism takes place in the liver, and is important in the breakdown of excess amino acids to form keto acids and in the formation of new amino acids (perhaps not available in the diet) from keto acids. An example is shown in Fig. 300. ESSENTIAL AMINO ACIDS cannot be produced by transamination.

trans·am·i·na·tion

(tranz'am-i-nā'shŭn)
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter.

transamination (tranzam´inā´shən),

n the reaction between an α-ketoacid and an amino acid in which the amino group moves to the α-ketoacid, creating a new amino acid and a new ketoacid.

transamination

the reversible exchange of amino groups between different amino acids.
References in periodicals archive ?
Second, the decrease in 2-ketoisocaproic acid concentrations in patients with PCOS suggests decreased transamination of leucine in the first step of BCAA catabolism--which is common to leucine, isoleucine, and valine--instead of the increased transamination previously suggested as a metabolic footprint of obesity and diabetes (27, 28).
Here we evaluated whether the quinolinic branch and/or the transamination side branch of the kynurenine pathway of Trp catabolism (leading to Quin or Kyna, respectively; Figure 1), become activated in severely ill patients who develop sepsis, and whether the increase of circulating Kyns results from impaired renal function.
Vitamin B6 in its active form is involved in the transamination of ammonia groups to other amino acids.
Transamination was further investigated by Martin-Venegas who demonstrated that the preferred amino acid used for transamination was Leucine.
The methods comprise creating a mutated enzyme that catalyzes the reductive amination or transamination of the target 2-ketoacid or ketone or the reduction of the ketone and providing the mutated enzyme in a reaction mixture comprising the target 2-ketoacid or ketone under conditions sufficient to permit the formation of the desired amino acid, amine or alcohol to thereby produce the amino acid, amine or alcohol.
In turn, the process of pyruvate transamination inhibits the build-up of toxic ammonia (N[H.